René's URL Explorer Experiment


Title: Return small HTML page · Cloudflare Workers docs

Open Graph Title: Return small HTML page · Cloudflare Workers docs

Description: Deliver an HTML page from an HTML string directly inside the Worker script.

Open Graph Description: Deliver an HTML page from an HTML string directly inside the Worker script.

Opengraph URL: https://developers.cloudflare.com/workers/examples/return-html/

X: @cloudflare

Generator: Nimbus v0.2.2

direct link

Domain: developers.cloudflare.com


Hey, it has json ld scripts:
{"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/workers/examples/return-html/#page","headline":"Return small HTML page","description":"Deliver an HTML page from an HTML string directly inside the Worker script.","url":"https://developers.cloudflare.com/workers/examples/return-html/","inLanguage":"en","image":"https://developers.cloudflare.com/workers/examples/return-html/og.png?v=6c72e162ff06349b","dateModified":"2026-04-23","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. Build, secure, and scale without managing infrastructure","url":"https://www.cloudflare.com/","sameAs":["https://github.com/cloudflare","https://www.linkedin.com/company/cloudflare","https://x.com/cloudflare"],"logo":{"@type":"ImageObject","url":"https://developers.cloudflare.com/logo.svg"},"address":{"@type":"PostalAddress","streetAddress":"101 Townsend St","addressLocality":"San Francisco","addressRegion":"CA","postalCode":"94107","addressCountry":"US"},"contactPoint":[{"@type":"ContactPoint","contactType":"Customer Support","url":"https://support.cloudflare.com/","availableLanguage":["English"]},{"@type":"ContactPoint","contactType":"Sales","url":"https://www.cloudflare.com/contact/","availableLanguage":["English"]}]},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"},"keywords":["JavaScript","TypeScript","Python","Rust"]}

og:typearticle
og:site_nameCloudflare Docs
og:localeen
imagehttps://developers.cloudflare.com/workers/examples/return-html/og.png?v=6c72e162ff06349b
og:imagehttps://developers.cloudflare.com/workers/examples/return-html/og.png?v=6c72e162ff06349b
twitter:cardsummary_large_image
twitter:imagehttps://developers.cloudflare.com/workers/examples/return-html/og.png?v=6c72e162ff06349b
pcx_productWorkers
algolia_product_filterWorkers
pcx_content_groupDeveloper platform
pcx_content_typeExample
algolia_content_typeExample
pcx_additional_productsWorkers
pcx_tagsJavaScript,TypeScript,Python,Rust
og-card{"type":"docs","title":"Return small HTML page","pills":["Workers"]}

Links:

Skip to contenthttps://developers.cloudflare.com/workers/examples/return-html/#main-content
Docshttps://developers.cloudflare.com/
Directoryhttps://developers.cloudflare.com/directory/
APIhttps://developers.cloudflare.com/api/
SDKshttps://developers.cloudflare.com/fundamentals/api/reference/sdks/
Changeloghttps://developers.cloudflare.com/changelog/
https://github.com/cloudflare/cloudflare-docs
Log inDashboardhttps://dash.cloudflare.com/
https://developers.cloudflare.com/
Workershttps://developers.cloudflare.com/workers/
Overviewhttps://developers.cloudflare.com/workers/
CLIhttps://developers.cloudflare.com/workers/get-started/guide/
Dashboardhttps://developers.cloudflare.com/workers/get-started/dashboard/
Promptinghttps://developers.cloudflare.com/workers/get-started/prompting/
Templateshttps://developers.cloudflare.com/workers/get-started/quickstarts/
Exampleshttps://developers.cloudflare.com/workers/examples/
Tutorialshttps://developers.cloudflare.com/workers/tutorials/
Workers Best Practiceshttps://developers.cloudflare.com/workers/best-practices/workers-best-practices/
Overviewhttps://developers.cloudflare.com/workers/demos/
Build an Interactive ChatGPT Apphttps://developers.cloudflare.com/workers/demos/chatgpt-app/
Overviewhttps://developers.cloudflare.com/workers/local-development/
Environment variables and secretshttps://developers.cloudflare.com/workers/local-development/environment-variables/
Vite Plugin ↗︎https://developers.cloudflare.com/workers/vite-plugin/
Choosing between Wrangler & Vitehttps://developers.cloudflare.com/workers/local-development/wrangler-vs-vite/
Developing with multiple Workershttps://developers.cloudflare.com/workers/local-development/multi-workers/
Adding local datahttps://developers.cloudflare.com/workers/local-development/local-data/
Supported bindings per development modehttps://developers.cloudflare.com/workers/local-development/bindings-per-env/
Local Explorerhttps://developers.cloudflare.com/workers/local-development/local-explorer/
Share a local dev serverhttps://developers.cloudflare.com/workers/local-development/local-dev-tunnels/
Playgroundhttps://developers.cloudflare.com/workers/playground/
Overviewhttps://developers.cloudflare.com/workers/configuration/
Programmatic configuration ↗︎https://developers.cloudflare.com/cf/projects/cloudflare-config/
Overviewhttps://developers.cloudflare.com/workers/configuration/sites/
Start from existinghttps://developers.cloudflare.com/workers/configuration/sites/start-from-existing/
Start from scratchhttps://developers.cloudflare.com/workers/configuration/sites/start-from-scratch/
Start from Workerhttps://developers.cloudflare.com/workers/configuration/sites/start-from-worker/
Workers Sites configurationhttps://developers.cloudflare.com/workers/configuration/sites/configuration/
Bindings ↗︎https://developers.cloudflare.com/workers/runtime-apis/bindings/
Cloudflare Accesshttps://developers.cloudflare.com/workers/configuration/cloudflare-access/
Compatibility dateshttps://developers.cloudflare.com/workers/configuration/compatibility-dates/
Compatibility flagshttps://developers.cloudflare.com/workers/configuration/compatibility-flags/
Cron Triggershttps://developers.cloudflare.com/workers/configuration/cron-triggers/
Environment variableshttps://developers.cloudflare.com/workers/configuration/environment-variables/
Overviewhttps://developers.cloudflare.com/workers/configuration/integrations/
APIshttps://developers.cloudflare.com/workers/configuration/integrations/apis/
External Serviceshttps://developers.cloudflare.com/workers/configuration/integrations/external-services/
Multipart upload metadatahttps://developers.cloudflare.com/workers/configuration/multipart-upload-metadata/
Page Ruleshttps://developers.cloudflare.com/workers/configuration/workers-with-page-rules/
PlacementBetahttps://developers.cloudflare.com/workers/configuration/placement/
Overviewhttps://developers.cloudflare.com/workers/configuration/routing/
Custom Domainshttps://developers.cloudflare.com/workers/configuration/routing/custom-domains/
Routeshttps://developers.cloudflare.com/workers/configuration/routing/routes/
workers.devhttps://developers.cloudflare.com/workers/configuration/routing/workers-dev/
Secretshttps://developers.cloudflare.com/workers/configuration/secrets/
Overviewhttps://developers.cloudflare.com/workers/previews/
Get startedhttps://developers.cloudflare.com/workers/previews/get-started/
Configurationhttps://developers.cloudflare.com/workers/previews/configuration/
Resources and isolationhttps://developers.cloudflare.com/workers/previews/resources/
Custom domainshttps://developers.cloudflare.com/workers/previews/custom-domains/
Test and debughttps://developers.cloudflare.com/workers/previews/test-and-debug/
Compare workflowshttps://developers.cloudflare.com/workers/previews/compare-workflows/
Exampleshttps://developers.cloudflare.com/workers/previews/examples/
Overviewhttps://developers.cloudflare.com/workers/authorization/
Workershttps://developers.cloudflare.com/workers/authorization/workers/
Durable Objectshttps://developers.cloudflare.com/workers/authorization/durable-objects/
Overviewhttps://developers.cloudflare.com/workers/versions-and-deployments/
Deployment managementhttps://developers.cloudflare.com/workers/versions-and-deployments/deployment-management/
Overviewhttps://developers.cloudflare.com/workers/versions-and-deployments/gradual-deployments/
Version affinityhttps://developers.cloudflare.com/workers/versions-and-deployments/gradual-deployments/version-affinity/
With Durable Objectshttps://developers.cloudflare.com/workers/versions-and-deployments/gradual-deployments/with-durable-objects/
Version overrideshttps://developers.cloudflare.com/workers/versions-and-deployments/version-overrides/
Rollbackshttps://developers.cloudflare.com/workers/versions-and-deployments/rollbacks/
Version URLshttps://developers.cloudflare.com/workers/versions-and-deployments/version-urls/
Overviewhttps://developers.cloudflare.com/workers/ci-cd/
Overviewhttps://developers.cloudflare.com/workers/ci-cd/builds/
Configurationhttps://developers.cloudflare.com/workers/ci-cd/builds/configuration/
Automatic pull requestshttps://developers.cloudflare.com/workers/ci-cd/builds/automatic-prs/
Overviewhttps://developers.cloudflare.com/workers/ci-cd/builds/git-integration/
Artifacts integrationhttps://developers.cloudflare.com/workers/ci-cd/builds/git-integration/artifacts-integration/
GitHub integrationhttps://developers.cloudflare.com/workers/ci-cd/builds/git-integration/github-integration/
GitLab integrationhttps://developers.cloudflare.com/workers/ci-cd/builds/git-integration/gitlab-integration/
Cursor Origin integrationhttps://developers.cloudflare.com/workers/ci-cd/builds/git-integration/cursor-origin-integration/
Build imagehttps://developers.cloudflare.com/workers/ci-cd/builds/build-image/
Build cachinghttps://developers.cloudflare.com/workers/ci-cd/builds/build-caching/
Build brancheshttps://developers.cloudflare.com/workers/ci-cd/builds/build-branches/
Build watch pathshttps://developers.cloudflare.com/workers/ci-cd/builds/build-watch-paths/
Deploy Hookshttps://developers.cloudflare.com/workers/ci-cd/builds/deploy-hooks/
Advanced setupshttps://developers.cloudflare.com/workers/ci-cd/builds/advanced-setups/
Event subscriptionshttps://developers.cloudflare.com/workers/ci-cd/builds/event-subscriptions/
Troubleshooting buildshttps://developers.cloudflare.com/workers/ci-cd/builds/troubleshoot/
Builds API referencehttps://developers.cloudflare.com/workers/ci-cd/builds/api-reference/
Limits & pricinghttps://developers.cloudflare.com/workers/ci-cd/builds/limits-and-pricing/
Overviewhttps://developers.cloudflare.com/workers/ci-cd/external-cicd/
GitHub Actionshttps://developers.cloudflare.com/workers/ci-cd/external-cicd/github-actions/
GitLab CI/CDhttps://developers.cloudflare.com/workers/ci-cd/external-cicd/gitlab-cicd/
Overviewhttps://developers.cloudflare.com/workers/cache/
Configurationhttps://developers.cloudflare.com/workers/cache/configuration/
Cache keyshttps://developers.cloudflare.com/workers/cache/cache-keys/
Purge and invalidate the cachehttps://developers.cloudflare.com/workers/cache/purge/
Exampleshttps://developers.cloudflare.com/workers/cache/examples/
Debugginghttps://developers.cloudflare.com/workers/cache/debugging/
Limitationshttps://developers.cloudflare.com/workers/cache/limitations/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/rpc/
Lifecyclehttps://developers.cloudflare.com/workers/runtime-apis/rpc/lifecycle/
Reserved Methodshttps://developers.cloudflare.com/workers/runtime-apis/rpc/reserved-methods/
Visibility and Security Modelhttps://developers.cloudflare.com/workers/runtime-apis/rpc/visibility/
TypeScripthttps://developers.cloudflare.com/workers/runtime-apis/rpc/typescript/
Error handlinghttps://developers.cloudflare.com/workers/runtime-apis/rpc/error-handling/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/webassembly/
Wasm in JavaScripthttps://developers.cloudflare.com/workers/runtime-apis/webassembly/javascript/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/bindings/
AI ↗︎https://developers.cloudflare.com/workers-ai/get-started/workers-wrangler/#2-connect-your-worker-to-workers-ai
AI Search ↗︎https://developers.cloudflare.com/ai-search/api/search/workers-binding/
Analytics Engine ↗︎https://developers.cloudflare.com/analytics/analytics-engine/
Analytics SQL bindinghttps://developers.cloudflare.com/workers/runtime-apis/bindings/analytics-sql/
Assets ↗︎https://developers.cloudflare.com/workers/static-assets/binding/
Browser Run ↗︎https://developers.cloudflare.com/browser-run/
D1 ↗︎https://developers.cloudflare.com/d1/worker-api/
Dispatcher (Workers for Platforms) ↗︎https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/configuration/dynamic-dispatch/
Durable Objects ↗︎https://developers.cloudflare.com/durable-objects/api/
Dynamic Worker Loadershttps://developers.cloudflare.com/workers/runtime-apis/bindings/worker-loader/
Environment Variables ↗︎https://developers.cloudflare.com/workers/configuration/environment-variables/
Hyperdrive ↗︎https://developers.cloudflare.com/hyperdrive/
Images ↗︎https://developers.cloudflare.com/images/optimization/binding/
KV ↗︎https://developers.cloudflare.com/kv/api/
Media Transformations ↗︎https://developers.cloudflare.com/stream/transform-videos/bindings/
mTLShttps://developers.cloudflare.com/workers/runtime-apis/bindings/mtls/
Queues ↗︎https://developers.cloudflare.com/queues/configuration/javascript-apis/
R2 ↗︎https://developers.cloudflare.com/r2/api/workers/workers-api-reference/
Rate Limitinghttps://developers.cloudflare.com/workers/runtime-apis/bindings/rate-limit/
Secrets ↗︎https://developers.cloudflare.com/workers/configuration/secrets/
Secrets Store ↗︎Betahttps://developers.cloudflare.com/secrets-store/integrations/workers/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/bindings/service-bindings/
HTTPhttps://developers.cloudflare.com/workers/runtime-apis/bindings/service-bindings/http/
RPC (WorkerEntrypoint)https://developers.cloudflare.com/workers/runtime-apis/bindings/service-bindings/rpc/
Stream ↗︎https://developers.cloudflare.com/stream/manage-video-library/bindings/
Vectorize ↗︎https://developers.cloudflare.com/vectorize/reference/client-api/
Version metadataBetahttps://developers.cloudflare.com/workers/runtime-apis/bindings/version-metadata/
Workflows ↗︎https://developers.cloudflare.com/workflows/
Cachehttps://developers.cloudflare.com/workers/runtime-apis/cache/
Consolehttps://developers.cloudflare.com/workers/runtime-apis/console/
Context (ctx)https://developers.cloudflare.com/workers/runtime-apis/context/
Encodinghttps://developers.cloudflare.com/workers/runtime-apis/encoding/
EventSourcehttps://developers.cloudflare.com/workers/runtime-apis/eventsource/
Fetchhttps://developers.cloudflare.com/workers/runtime-apis/fetch/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/handlers/
Alarm Handler ↗︎https://developers.cloudflare.com/durable-objects/api/alarms/
Connect Handlerhttps://developers.cloudflare.com/workers/runtime-apis/handlers/connect/
Email Handler ↗︎https://developers.cloudflare.com/email-service/api/route-emails/email-handler/
Fetch Handlerhttps://developers.cloudflare.com/workers/runtime-apis/handlers/fetch/
Queue Handler ↗︎https://developers.cloudflare.com/queues/configuration/javascript-apis/#consumer
Scheduled Handlerhttps://developers.cloudflare.com/workers/runtime-apis/handlers/scheduled/
Tail Handlerhttps://developers.cloudflare.com/workers/runtime-apis/handlers/tail/
Headershttps://developers.cloudflare.com/workers/runtime-apis/headers/
HTMLRewriterhttps://developers.cloudflare.com/workers/runtime-apis/html-rewriter/
MessageChannelhttps://developers.cloudflare.com/workers/runtime-apis/messagechannel/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/
asserthttps://developers.cloudflare.com/workers/runtime-apis/nodejs/assert/
AsyncLocalStoragehttps://developers.cloudflare.com/workers/runtime-apis/nodejs/asynclocalstorage/
Bufferhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/buffer/
cryptohttps://developers.cloudflare.com/workers/runtime-apis/nodejs/crypto/
Diagnostics Channelhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/diagnostics-channel/
dnshttps://developers.cloudflare.com/workers/runtime-apis/nodejs/dns/
EventEmitterhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/eventemitter/
fshttps://developers.cloudflare.com/workers/runtime-apis/nodejs/fs/
httphttps://developers.cloudflare.com/workers/runtime-apis/nodejs/http/
httpshttps://developers.cloudflare.com/workers/runtime-apis/nodejs/https/
nethttps://developers.cloudflare.com/workers/runtime-apis/nodejs/net/
pathhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/path/
processhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/process/
Streamshttps://developers.cloudflare.com/workers/runtime-apis/nodejs/streams/
StringDecoderhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/string-decoder/
testhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/test/
timershttps://developers.cloudflare.com/workers/runtime-apis/nodejs/timers/
tlshttps://developers.cloudflare.com/workers/runtime-apis/nodejs/tls/
urlhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/url/
utilhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/util/
zlibhttps://developers.cloudflare.com/workers/runtime-apis/nodejs/zlib/
Performance and timershttps://developers.cloudflare.com/workers/runtime-apis/performance/
Requesthttps://developers.cloudflare.com/workers/runtime-apis/request/
Responsehttps://developers.cloudflare.com/workers/runtime-apis/response/
Schedulerhttps://developers.cloudflare.com/workers/runtime-apis/scheduler/
Overviewhttps://developers.cloudflare.com/workers/runtime-apis/streams/
ReadableStreamhttps://developers.cloudflare.com/workers/runtime-apis/streams/readablestream/
ReadableStream BYOBReaderhttps://developers.cloudflare.com/workers/runtime-apis/streams/readablestreambyobreader/
ReadableStream DefaultReaderhttps://developers.cloudflare.com/workers/runtime-apis/streams/readablestreamdefaultreader/
TransformStreamhttps://developers.cloudflare.com/workers/runtime-apis/streams/transformstream/
WritableStreamhttps://developers.cloudflare.com/workers/runtime-apis/streams/writablestream/
WritableStream DefaultWriterhttps://developers.cloudflare.com/workers/runtime-apis/streams/writablestreamdefaultwriter/
TCP socketshttps://developers.cloudflare.com/workers/runtime-apis/tcp-sockets/
Web Cryptohttps://developers.cloudflare.com/workers/runtime-apis/web-crypto/
Web standardshttps://developers.cloudflare.com/workers/runtime-apis/web-standards/
WebSocketshttps://developers.cloudflare.com/workers/runtime-apis/websockets/
Overviewhttps://developers.cloudflare.com/workers/static-assets/
Get Startedhttps://developers.cloudflare.com/workers/static-assets/get-started/
Configuration and Bindingshttps://developers.cloudflare.com/workers/static-assets/binding/
Full-stack applicationhttps://developers.cloudflare.com/workers/static-assets/routing/full-stack-application/
Single Page Application (SPA)https://developers.cloudflare.com/workers/static-assets/routing/single-page-application/
Static Site Generation (SSG) and custom 404 pageshttps://developers.cloudflare.com/workers/static-assets/routing/static-site-generation/
Worker scripthttps://developers.cloudflare.com/workers/static-assets/routing/worker-script/
Gradual rollouts ↗︎https://developers.cloudflare.com/workers/versions-and-deployments/gradual-deployments/version-affinity/#static-assets
HTML handlinghttps://developers.cloudflare.com/workers/static-assets/routing/advanced/html-handling/
Serving a subdirectoryhttps://developers.cloudflare.com/workers/static-assets/routing/advanced/serving-a-subdirectory/
Headershttps://developers.cloudflare.com/workers/static-assets/headers/
Redirectshttps://developers.cloudflare.com/workers/static-assets/redirects/
Direct Uploadshttps://developers.cloudflare.com/workers/static-assets/direct-upload/
Billing and Limitationshttps://developers.cloudflare.com/workers/static-assets/billing-and-limitations/
Migrate from Pages to Workershttps://developers.cloudflare.com/workers/static-assets/migration-guides/migrate-from-pages/
Migrate from Netlify to Workershttps://developers.cloudflare.com/workers/static-assets/migration-guides/netlify-to-workers/
Migrate from Vercel to Workershttps://developers.cloudflare.com/workers/static-assets/migration-guides/vercel-to-workers/
Deploy an existing projecthttps://developers.cloudflare.com/workers/framework-guides/automatic-configuration/
React + Vitehttps://developers.cloudflare.com/workers/framework-guides/web-apps/react/
Astrohttps://developers.cloudflare.com/workers/framework-guides/web-apps/astro/
React Router (formerly Remix)https://developers.cloudflare.com/workers/framework-guides/web-apps/react-router/
Next.jshttps://developers.cloudflare.com/workers/framework-guides/web-apps/nextjs/
OpenNext adapterhttps://developers.cloudflare.com/workers/framework-guides/web-apps/opennext/
Vuehttps://developers.cloudflare.com/workers/framework-guides/web-apps/vue/
RedwoodSDKhttps://developers.cloudflare.com/workers/framework-guides/web-apps/redwoodsdk/
TanStack Starthttps://developers.cloudflare.com/workers/framework-guides/web-apps/tanstack-start/
Microfrontendshttps://developers.cloudflare.com/workers/framework-guides/web-apps/microfrontends/
SvelteKithttps://developers.cloudflare.com/workers/framework-guides/web-apps/sveltekit/
Vikehttps://developers.cloudflare.com/workers/framework-guides/web-apps/vike/
Foldkithttps://developers.cloudflare.com/workers/framework-guides/web-apps/foldkit/
fatehttps://developers.cloudflare.com/workers/framework-guides/web-apps/fate/
Analoghttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/analog/
Angularhttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/angular/
Docusaurushttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/docusaurus/
Gatsbyhttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/gatsby/
Honohttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/hono/
Nuxthttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/nuxt/
Qwikhttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/qwik/
SolidBetahttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/solid/
Wakuhttps://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/waku/
Expohttps://docs.expo.dev/eas/hosting/reference/worker-runtime/
FastAPI ↗︎https://developers.cloudflare.com/workers/languages/python/packages/fastapi/
Flask ↗︎https://developers.cloudflare.com/workers/languages/python/packages/flask/
Hono ↗︎https://developers.cloudflare.com/workers/framework-guides/web-apps/more-web-frameworks/hono/
Agents SDK ↗︎https://developers.cloudflare.com/agents/
LangChain ↗︎https://developers.cloudflare.com/workers/languages/python/packages/langchain/
Connect to databaseshttps://developers.cloudflare.com/workers/databases/connecting-to-databases/
Analytics Engine ↗︎https://developers.cloudflare.com/analytics/analytics-engine/
Vectorize (vector database) ↗︎https://developers.cloudflare.com/vectorize/
Cloudflare D1 ↗︎https://developers.cloudflare.com/d1/
Hyperdrive ↗︎https://developers.cloudflare.com/hyperdrive/
Overviewhttps://developers.cloudflare.com/workers/databases/third-party-integrations/
MongoDBhttps://developers.cloudflare.com/workers/databases/third-party-integrations/mongodb/
Neonhttps://developers.cloudflare.com/workers/databases/third-party-integrations/neon/
PlanetScalehttps://developers.cloudflare.com/workers/databases/third-party-integrations/planetscale/
Supabasehttps://developers.cloudflare.com/workers/databases/third-party-integrations/supabase/
Tursohttps://developers.cloudflare.com/workers/databases/third-party-integrations/turso/
Upstashhttps://developers.cloudflare.com/workers/databases/third-party-integrations/upstash/
Xatahttps://developers.cloudflare.com/workers/databases/third-party-integrations/xata/
Overviewhttps://developers.cloudflare.com/workers/observability/
Metrics and analyticshttps://developers.cloudflare.com/workers/observability/metrics-and-analytics/
Overviewhttps://developers.cloudflare.com/workers/observability/logs/
Workers Logshttps://developers.cloudflare.com/workers/observability/logs/workers-logs/
Real-time logshttps://developers.cloudflare.com/workers/observability/logs/real-time-logs/
Tail Workershttps://developers.cloudflare.com/workers/observability/logs/tail-workers/
Workers Logpushhttps://developers.cloudflare.com/workers/observability/logs/logpush/
Overviewhttps://developers.cloudflare.com/workers/observability/traces/
Custom spansBetahttps://developers.cloudflare.com/workers/observability/traces/custom-spans/
Spans and attributeshttps://developers.cloudflare.com/workers/observability/traces/spans-and-attributes/
Known limitationshttps://developers.cloudflare.com/workers/observability/traces/known-limitations/
Overviewhttps://developers.cloudflare.com/workers/observability/dev-tools/
Breakpointshttps://developers.cloudflare.com/workers/observability/dev-tools/breakpoints/
Profiling CPU usagehttps://developers.cloudflare.com/workers/observability/dev-tools/cpu-usage/
Profiling Memoryhttps://developers.cloudflare.com/workers/observability/dev-tools/memory-usage/
Query Builderhttps://developers.cloudflare.com/workers/observability/query-builder/
Overviewhttps://developers.cloudflare.com/workers/observability/issues/
Investigate issueshttps://developers.cloudflare.com/workers/observability/issues/investigate/
Set up an automationhttps://developers.cloudflare.com/workers/observability/issues/automations/
OpenTelemetry exporthttps://developers.cloudflare.com/workers/observability/opentelemetry-export/
Errors and exceptionshttps://developers.cloudflare.com/workers/observability/errors/
Sentryhttps://docs.sentry.io/platforms/javascript/guides/cloudflare/
Profiling in productionhttps://developers.cloudflare.com/workers/observability/profiling-in-production/
Source maps and stack traceshttps://developers.cloudflare.com/workers/observability/source-maps/
Overviewhttps://developers.cloudflare.com/workers/testing/
Overviewhttps://developers.cloudflare.com/workers/testing/vitest-integration/
Write your first testhttps://developers.cloudflare.com/workers/testing/vitest-integration/write-your-first-test/
Recipes and exampleshttps://developers.cloudflare.com/workers/testing/vitest-integration/recipes/
Configurationhttps://developers.cloudflare.com/workers/testing/vitest-integration/configuration/
Mock outbound requestshttps://developers.cloudflare.com/workers/testing/vitest-integration/mock-outbound-requests/
Test APIshttps://developers.cloudflare.com/workers/testing/vitest-integration/test-apis/
Isolation and concurrencyhttps://developers.cloudflare.com/workers/testing/vitest-integration/isolation-and-concurrency/
Debugginghttps://developers.cloudflare.com/workers/testing/vitest-integration/debugging/
Known issueshttps://developers.cloudflare.com/workers/testing/vitest-integration/known-issues/
Migrate to Vitest pluginhttps://developers.cloudflare.com/workers/testing/vitest-integration/migration-guides/migrate-to-vitest-plugin/
Migrate from Vitest 3 to Vitest 4https://developers.cloudflare.com/workers/testing/vitest-integration/migration-guides/migrate-from-vitest-3-to-vitest-4/
Migrate from Miniflare 2's test environmentshttps://developers.cloudflare.com/workers/testing/vitest-integration/migration-guides/migrate-from-miniflare-2/
Migrate from unstable_devhttps://developers.cloudflare.com/workers/testing/vitest-integration/migration-guides/migrate-from-unstable-dev/
Overviewhttps://developers.cloudflare.com/workers/testing/test-harness/
Get startedhttps://developers.cloudflare.com/workers/testing/test-harness/get-started/
Configure the test harnesshttps://developers.cloudflare.com/workers/testing/test-harness/configure/
Prepare test statehttps://developers.cloudflare.com/workers/testing/test-harness/prepare-test-state/
Interact with Workershttps://developers.cloudflare.com/workers/testing/test-harness/interact-with-workers/
Integrationshttps://developers.cloudflare.com/workers/testing/test-harness/integrations/
Overviewhttps://developers.cloudflare.com/workers/testing/miniflare/
Get Startedhttps://developers.cloudflare.com/workers/testing/miniflare/get-started/
Writing testshttps://developers.cloudflare.com/workers/testing/miniflare/writing-tests/
Compatibility Dateshttps://developers.cloudflare.com/workers/testing/miniflare/core/compatibility/
Fetch Eventshttps://developers.cloudflare.com/workers/testing/miniflare/core/fetch/
Moduleshttps://developers.cloudflare.com/workers/testing/miniflare/core/modules/
Multiple Workershttps://developers.cloudflare.com/workers/testing/miniflare/core/multiple-workers/
Queueshttps://developers.cloudflare.com/workers/testing/miniflare/core/queues/
Scheduled Eventshttps://developers.cloudflare.com/workers/testing/miniflare/core/scheduled/
Variables and Secretshttps://developers.cloudflare.com/workers/testing/miniflare/core/variables-secrets/
Web Standardshttps://developers.cloudflare.com/workers/testing/miniflare/core/standards/
WebSocketshttps://developers.cloudflare.com/workers/testing/miniflare/core/web-sockets/
Attaching a Debuggerhttps://developers.cloudflare.com/workers/testing/miniflare/developing/debugger/
Live Reloadhttps://developers.cloudflare.com/workers/testing/miniflare/developing/live-reload/
Migrating from Version 2https://developers.cloudflare.com/workers/testing/miniflare/migrations/from-v2/
Cachehttps://developers.cloudflare.com/workers/testing/miniflare/storage/cache/
D1https://developers.cloudflare.com/workers/testing/miniflare/storage/d1/
Durable Objectshttps://developers.cloudflare.com/workers/testing/miniflare/storage/durable-objects/
KVhttps://developers.cloudflare.com/workers/testing/miniflare/storage/kv/
R2https://developers.cloudflare.com/workers/testing/miniflare/storage/r2/
Wrangler's unstable_startWorker()https://developers.cloudflare.com/workers/testing/unstable_startworker/
Overviewhttps://developers.cloudflare.com/workers/wrangler/
Install/Update Wranglerhttps://developers.cloudflare.com/workers/wrangler/install-and-update/
Migrate from Wrangler v3 to v4https://developers.cloudflare.com/workers/wrangler/migration/update-v3-to-v4/
Migrate from Wrangler v2 to v3https://developers.cloudflare.com/workers/wrangler/migration/update-v2-to-v3/
Overviewhttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/
Install / Updatehttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/install-update/
Authenticationhttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/authentication/
Commandshttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/commands/
Configurationhttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/configuration/
Webpackhttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/wrangler-legacy/webpack/
1. Migrate webpack projectshttps://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/eject-webpack/
2. Update to Wrangler v2https://developers.cloudflare.com/workers/wrangler/migration/v1-to-v2/update-v1-to-v2/
APIhttps://developers.cloudflare.com/workers/wrangler/api/
Overviewhttps://developers.cloudflare.com/workers/wrangler/commands/
Workershttps://developers.cloudflare.com/workers/wrangler/commands/workers/
General commandshttps://developers.cloudflare.com/workers/wrangler/commands/general/
Artifactshttps://developers.cloudflare.com/workers/wrangler/commands/artifacts/
Basin Pipelineshttps://developers.cloudflare.com/workers/wrangler/commands/pipelines/
Browserhttps://developers.cloudflare.com/workers/wrangler/commands/browser/
Certificateshttps://developers.cloudflare.com/workers/wrangler/commands/certificates/
Containershttps://developers.cloudflare.com/workers/wrangler/commands/containers/
D1https://developers.cloudflare.com/workers/wrangler/commands/d1/
Flagshiphttps://developers.cloudflare.com/workers/wrangler/commands/flagship/
Hyperdrivehttps://developers.cloudflare.com/workers/wrangler/commands/hyperdrive/
KVhttps://developers.cloudflare.com/workers/wrangler/commands/kv/
Pageshttps://developers.cloudflare.com/workers/wrangler/commands/pages/
Queueshttps://developers.cloudflare.com/workers/wrangler/commands/queues/
R2https://developers.cloudflare.com/workers/wrangler/commands/r2/
Secrets Storehttps://developers.cloudflare.com/workers/wrangler/commands/secrets-store/
Tunnelhttps://developers.cloudflare.com/workers/wrangler/commands/tunnel/
Vectorizehttps://developers.cloudflare.com/workers/wrangler/commands/vectorize/
VPChttps://developers.cloudflare.com/workers/wrangler/commands/vpc/
Workers for Platformshttps://developers.cloudflare.com/workers/wrangler/commands/workers-for-platforms/
Workflowshttps://developers.cloudflare.com/workers/wrangler/commands/workflows/
Authentication profileshttps://developers.cloudflare.com/workers/wrangler/profiles/
Bundlinghttps://developers.cloudflare.com/workers/wrangler/bundling/
Configurationhttps://developers.cloudflare.com/workers/wrangler/configuration/
Custom buildshttps://developers.cloudflare.com/workers/wrangler/custom-builds/
Deprecationshttps://developers.cloudflare.com/workers/wrangler/deprecations/
Environmentshttps://developers.cloudflare.com/workers/wrangler/environments/
System environment variableshttps://developers.cloudflare.com/workers/wrangler/system-environment-variables/
Overviewhttps://developers.cloudflare.com/workers/vite-plugin/
Get startedhttps://developers.cloudflare.com/workers/vite-plugin/get-started/
Tutorial - React SPA with an APIhttps://developers.cloudflare.com/workers/vite-plugin/tutorial/
v2 betaBetahttps://developers.cloudflare.com/workers/vite-plugin/v2-beta/
APIhttps://developers.cloudflare.com/workers/vite-plugin/reference/api/
Static Assetshttps://developers.cloudflare.com/workers/vite-plugin/reference/static-assets/
Debugginghttps://developers.cloudflare.com/workers/vite-plugin/reference/debugging/
Migrating from wrangler devhttps://developers.cloudflare.com/workers/vite-plugin/reference/migrating-from-wrangler-dev/
Secretshttps://developers.cloudflare.com/workers/vite-plugin/reference/secrets/
Vite Environmentshttps://developers.cloudflare.com/workers/vite-plugin/reference/vite-environments/
Cloudflare Environmentshttps://developers.cloudflare.com/workers/vite-plugin/reference/cloudflare-environments/
Non-JavaScript moduleshttps://developers.cloudflare.com/workers/vite-plugin/reference/non-javascript-modules/
Programmatic configurationhttps://developers.cloudflare.com/workers/vite-plugin/reference/programmatic-configuration/
Overviewhttps://developers.cloudflare.com/workers/languages/
Overviewhttps://developers.cloudflare.com/workers/languages/javascript/
Examples ↗︎https://developers.cloudflare.com/workers/examples/?languages=JavaScript
Overviewhttps://developers.cloudflare.com/workers/languages/typescript/
Examples ↗︎https://developers.cloudflare.com/workers/examples/?languages=TypeScript
Overviewhttps://developers.cloudflare.com/workers/languages/python/
The Basicshttps://developers.cloudflare.com/workers/languages/python/basics/
How Python Workers Workhttps://developers.cloudflare.com/workers/languages/python/how-python-workers-work/
Foreign Function Interface (FFI)https://developers.cloudflare.com/workers/languages/python/ffi/
Standard Libraryhttps://developers.cloudflare.com/workers/languages/python/stdlib/
Exampleshttps://developers.cloudflare.com/workers/languages/python/examples/
Overviewhttps://developers.cloudflare.com/workers/languages/python/packages/
Djangohttps://developers.cloudflare.com/workers/languages/python/packages/django/
FastAPIhttps://developers.cloudflare.com/workers/languages/python/packages/fastapi/
Flaskhttps://developers.cloudflare.com/workers/languages/python/packages/flask/
Langchainhttps://developers.cloudflare.com/workers/languages/python/packages/langchain/
Overviewhttps://developers.cloudflare.com/workers/languages/rust/
Supported crateshttps://developers.cloudflare.com/workers/languages/rust/crates/
Overviewhttps://developers.cloudflare.com/workers/platform/
Pricinghttps://developers.cloudflare.com/workers/platform/pricing/
Overviewhttps://developers.cloudflare.com/workers/platform/changelog/
Workers (Historic)https://developers.cloudflare.com/workers/platform/changelog/historical-changelog/
Wranglerhttps://github.com/cloudflare/workers-sdk/releases
Limitshttps://developers.cloudflare.com/workers/platform/limits/
Choose a data or storage producthttps://developers.cloudflare.com/workers/platform/storage-options/
Betashttps://developers.cloudflare.com/workers/platform/betas/
Deploy to Cloudflare buttonshttps://developers.cloudflare.com/workers/platform/deploy-buttons/
Claim deployments (temporary accounts)https://developers.cloudflare.com/workers/platform/claim-deployments/
Built with Cloudflare buttonhttps://developers.cloudflare.com/workers/platform/built-with-cloudflare/
Known issueshttps://developers.cloudflare.com/workers/platform/known-issues/
Workers for Platforms ↗︎https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/
Infrastructure as Code (IaC)https://developers.cloudflare.com/workers/platform/infrastructure-as-code/
Glossaryhttps://developers.cloudflare.com/workers/glossary/
How the Cache workshttps://developers.cloudflare.com/workers/reference/how-the-cache-works/
How Workers workshttps://developers.cloudflare.com/workers/reference/how-workers-works/
Migrate from Service Workers to ES Moduleshttps://developers.cloudflare.com/workers/reference/migrate-to-module-workers/
Protocolshttps://developers.cloudflare.com/workers/reference/protocols/
Security modelhttps://developers.cloudflare.com/workers/reference/security-model/
Agent setup ↗︎https://developers.cloudflare.com/agent-setup/
Cloudflare Skills ↗︎https://github.com/cloudflare/skills
Code Mode MCP Server ↗︎https://github.com/cloudflare/mcp
Domain-specific MCP Servers ↗︎MCPhttps://github.com/cloudflare/mcp-server-cloudflare
Workers llms.txt ↗︎https://developers.cloudflare.com/workers/llms.txt
Workers llms-full.txt ↗︎https://developers.cloudflare.com/workers/llms-full.txt
Cloudflare Docs llms.txt ↗︎https://developers.cloudflare.com/llms.txt
Cloudflare Docs llms-full.txt ↗︎https://developers.cloudflare.com/llms-full.txt
Homehttps://developers.cloudflare.com/
Workershttps://developers.cloudflare.com/workers/
Exampleshttps://developers.cloudflare.com/workers/examples/
View as Markdownhttps://developers.cloudflare.com/workers/examples/return-html/index.md
Agent setuphttps://developers.cloudflare.com/agent-setup/
https://deploy.workers.cloudflare.com/?url=https://github.com/cloudflare/docs-examples/tree/main/workers/return-html
Edit pagehttps://github.com/cloudflare/cloudflare-docs/edit/production/src/content/docs/workers/examples/return-html.mdx
Report issuehttps://github.com/cloudflare/cloudflare-docs/issues/new/choose
Overviewhttps://developers.cloudflare.com/workers/examples/return-html/#_top
Edit pagehttps://github.com/cloudflare/cloudflare-docs/edit/production/src/content/docs/workers/examples/return-html.mdx
Report issuehttps://github.com/cloudflare/cloudflare-docs/issues/new/choose
Planshttps://www.cloudflare.com/plans/
Contact saleshttps://www.cloudflare.com/resource/contact-enterprise-sales/
Partnershttps://www.cloudflare.com/partners/
Find a partnerhttps://partnerlocator.cloudflare.com/dashboard
Startupshttps://www.cloudflare.com/startups/
Under attack?https://www.cloudflare.com/under-attack-hotline/
Domain name searchhttps://domains.cloudflare.com/
Abouthttps://www.cloudflare.com/about/
Careershttps://www.cloudflare.com/careers/
Investorshttps://cloudflare.net/
Presshttps://www.cloudflare.com/press/
Press kithttps://www.cloudflare.com/press/press-kit/
Global networkhttps://www.cloudflare.com/network/
Project Galileohttps://www.cloudflare.com/galileo/
Athenian Projecthttps://www.cloudflare.com/athenian/
Cloudflare for Campaignshttps://www.cloudflare.com/campaigns/
Project Fairshothttps://www.cloudflare.com/fair-shot/
Impact/ESGhttps://www.cloudflare.com/impact/
Compliance resourceshttps://www.cloudflare.com/trust-hub/compliance-resources/
Trust Hubhttps://www.cloudflare.com/trust-hub/
Data Protectionhttps://www.cloudflare.com/trust-hub/gdpr/
Responsible AIhttps://www.cloudflare.com/trust-hub/responsible-ai/
Transparency reporthttps://www.cloudflare.com/transparency/
Report abusehttps://www.cloudflare.com/trust-hub/abuse-approach/
App innovation reporthttps://www.cloudflare.com/resource/app-innovation-report/
Cloudflare Radarhttps://radar.cloudflare.com/
Case studieshttps://www.cloudflare.com/case-studies/
Statushttps://www.cloudflarestatus.com/
Supporthttps://support.cloudflare.com/
Eventshttps://www.cloudflare.com/events/
Bloghttps://blog.cloudflare.com/
Documentationhttps://developers.cloudflare.com/
Learning centerhttps://www.cloudflare.com/learning/
Communityhttps://community.cloudflare.com/
SSE and SASE platformhttps://www.cloudflare.com/sase/
Cloudflare AI Cloudhttps://www.cloudflare.com/solutions/ai/
AI Securityhttps://www.cloudflare.com/solutions/ai-security/
Frontend Development Platformhttps://www.cloudflare.com/solutions/frontends/
Multi-Tenant Platform Developmenthttps://www.cloudflare.com/solutions/platforms/
Web Security Platformhttps://www.cloudflare.com/solutions/security/
Start Buildinghttps://dash.cloudflare.com/sign-up
Log Inhttps://dash.cloudflare.com/login
Privacy policyhttps://www.cloudflare.com/policies/privacy/
Report security issueshttps://www.cloudflare.com/disclosure/
Terms of usehttps://www.cloudflare.com/policies/terms/
Trademarkhttps://www.cloudflare.com/trademark/
Docshttps://developers.cloudflare.com/

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