René's URL Explorer Experiment

Title: GitHub - validator/validator: The Nu Html Checker (vnu)

Open Graph Title: GitHub - validator/validator: The Nu Html Checker (vnu)

X Title: GitHub - validator/validator: The Nu Html Checker (vnu)

Description: The Nu Html Checker (vnu). Contribute to validator/validator development by creating an account on GitHub.

Open Graph Description: The Nu Html Checker (vnu). Contribute to validator/validator development by creating an account on GitHub.

X Description: The Nu Html Checker (vnu). Contribute to validator/validator development by creating an account on GitHub.

Opengraph URL: https://github.com/validator/validator

X: @github

direct link

Domain: github.com

route-pattern	/:user_id/:repository
route-controller	files
route-action	disambiguate
fetch-nonce	v2:a8ff8c60-e4a8-e13c-cca8-87c4c9c2ed02
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	E472:2003D6:31713C:43E11C:698F1DF8
html-safe-nonce	5c0523b2853bbab3a4da5f53748fe717e4bd2f9cb07656309bba4e1d60d8c25e
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJFNDcyOjIwMDNENjozMTcxM0M6NDNFMTFDOjY5OEYxREY4IiwidmlzaXRvcl9pZCI6IjQ5Mzg3ODgxNDM4OTE0MjI3MTIiLCJyZWdpb25fZWRnZSI6ImlhZCIsInJlZ2lvbl9yZW5kZXIiOiJpYWQifQ==
visitor-hmac	60b1b4f2dc0942ca2048fdc151b6055f05fa5d41b4804707bc7086c38f83045e
hovercard-subject-tag	repository:1133930
github-keyboard-shortcuts	repository,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	//
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/validator/validator
twitter:image	https://opengraph.githubassets.com/0ded3a8e16e642f8ff4a5633f06edea188fc849a754fd1179aa84be2ab122f98/validator/validator
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/0ded3a8e16e642f8ff4a5633f06edea188fc849a754fd1179aa84be2ab122f98/validator/validator
og:image:alt	The Nu Html Checker (vnu). Contribute to validator/validator development by creating an account on GitHub.
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	6102991c714c1a6a27d05fb4f96ea6ca87a6750b4f093b95cc57ed1b84b145a1
turbo-cache-control	no-preview
go-import	github.com/validator/validator git https://github.com/validator/validator.git
octolytics-dimension-user_id	498971
octolytics-dimension-user_login	validator
octolytics-dimension-repository_id	1133930
octolytics-dimension-repository_nwo	validator/validator
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	false
octolytics-dimension-repository_network_root_id	1133930
octolytics-dimension-repository_network_root_nwo	validator/validator
turbo-body-classes	logged-out env-production page-responsive
disable-turbo	false
browser-stats-url	https://api.github.com/_private/browser/stats
browser-errors-url	https://api.github.com/_private/browser/errors
release	1f991dff419ee6d80807c889c647c151386ba074
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://github.com/validator/validator.git#start-of-content
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GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub SparkBuild and deploy intelligent apps	https://github.com/features/spark
GitHub ModelsManage and compare prompts	https://github.com/features/models
MCP RegistryNewIntegrate external tools	https://github.com/mcp
ActionsAutomate any workflow	https://github.com/features/actions
CodespacesInstant dev environments	https://github.com/features/codespaces
IssuesPlan and track work	https://github.com/features/issues
Code ReviewManage code changes	https://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilities	https://github.com/security/advanced-security
Code securitySecure your code as you build	https://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they start	https://github.com/security/advanced-security/secret-protection
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Changelog	https://github.blog/changelog
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Small and medium teams	https://github.com/team
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App Modernization	https://github.com/solutions/use-case/app-modernization
DevSecOps	https://github.com/solutions/use-case/devsecops
DevOps	https://github.com/solutions/use-case/devops
CI/CD	https://github.com/solutions/use-case/ci-cd
View all use cases	https://github.com/solutions/use-case
Healthcare	https://github.com/solutions/industry/healthcare
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Manufacturing	https://github.com/solutions/industry/manufacturing
Government	https://github.com/solutions/industry/government
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DevOps	https://github.com/resources/articles?topic=devops
Security	https://github.com/resources/articles?topic=security
View all topics	https://github.com/resources/articles
Customer stories	https://github.com/customer-stories
Events & webinars	https://github.com/resources/events
Ebooks & reports	https://github.com/resources/whitepapers
Business insights	https://github.com/solutions/executive-insights
GitHub Skills	https://skills.github.com
Documentation	https://docs.github.com
Customer support	https://support.github.com
Community forum	https://github.com/orgs/community/discussions
Trust center	https://github.com/trust-center
Partners	https://github.com/partners
GitHub SponsorsFund open source developers	https://github.com/sponsors
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Maintainer Community	https://maintainers.github.com
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Trending	https://github.com/trending
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Enterprise platformAI-powered developer platform	https://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security features	https://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI features	https://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 support	https://github.com/premium-support
Pricing	https://github.com/pricing
Search syntax tips	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentation	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fvalidator%2Fvalidator
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Reload	https://github.com/validator/validator.git
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Reload	https://github.com/validator/validator.git
validator	https://github.com/validator
validator	https://github.com/validator/validator
Please reload this page	https://github.com/validator/validator.git
Notifications	https://github.com/login?return_to=%2Fvalidator%2Fvalidator
Fork 317	https://github.com/login?return_to=%2Fvalidator%2Fvalidator
Star 1.9k	https://github.com/login?return_to=%2Fvalidator%2Fvalidator
validator.github.io/validator/	https://validator.github.io/validator/
MIT license	https://github.com/validator/validator/blob/main/LICENSE
1.9k stars	https://github.com/validator/validator/stargazers
317 forks	https://github.com/validator/validator/forks
Branches	https://github.com/validator/validator/branches
Tags	https://github.com/validator/validator/tags
Activity	https://github.com/validator/validator/activity
Star	https://github.com/login?return_to=%2Fvalidator%2Fvalidator
Notifications	https://github.com/login?return_to=%2Fvalidator%2Fvalidator
Code	https://github.com/validator/validator
Issues 3	https://github.com/validator/validator/issues
Pull requests 1	https://github.com/validator/validator/pulls
Discussions	https://github.com/validator/validator/discussions
Actions	https://github.com/validator/validator/actions
Wiki	https://github.com/validator/validator/wiki
Security 0	https://github.com/validator/validator/security
Insights	https://github.com/validator/validator/pulse
Code	https://github.com/validator/validator
Issues	https://github.com/validator/validator/issues
Pull requests	https://github.com/validator/validator/pulls
Discussions	https://github.com/validator/validator/discussions
Actions	https://github.com/validator/validator/actions
Wiki	https://github.com/validator/validator/wiki
Security	https://github.com/validator/validator/security
Insights	https://github.com/validator/validator/pulse
Branches	https://github.com/validator/validator/branches
Tags	https://github.com/validator/validator/tags
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5,118 Commits	https://github.com/validator/validator/commits/main/
	https://github.com/validator/validator/commits/main/
.github	https://github.com/validator/validator/tree/main/.github
.github	https://github.com/validator/validator/tree/main/.github
.settings	https://github.com/validator/validator/tree/main/.settings
.settings	https://github.com/validator/validator/tree/main/.settings
_layouts	https://github.com/validator/validator/tree/main/_layouts
_layouts	https://github.com/validator/validator/tree/main/_layouts
assets	https://github.com/validator/validator/tree/main/assets
assets	https://github.com/validator/validator/tree/main/assets
build	https://github.com/validator/validator/tree/main/build
build	https://github.com/validator/validator/tree/main/build
css-validator	https://github.com/validator/validator/tree/main/css-validator
css-validator	https://github.com/validator/validator/tree/main/css-validator
docs	https://github.com/validator/validator/tree/main/docs
docs	https://github.com/validator/validator/tree/main/docs
e2e	https://github.com/validator/validator/tree/main/e2e
e2e	https://github.com/validator/validator/tree/main/e2e
galimatias	https://github.com/validator/validator/tree/main/galimatias
galimatias	https://github.com/validator/validator/tree/main/galimatias
htmlparser	https://github.com/validator/validator/tree/main/htmlparser
htmlparser	https://github.com/validator/validator/tree/main/htmlparser
jing-trang	https://github.com/validator/validator/tree/main/jing-trang
jing-trang	https://github.com/validator/validator/tree/main/jing-trang
langdetect	https://github.com/validator/validator/tree/main/langdetect
langdetect	https://github.com/validator/validator/tree/main/langdetect
resources	https://github.com/validator/validator/tree/main/resources
resources	https://github.com/validator/validator/tree/main/resources
schema	https://github.com/validator/validator/tree/main/schema
schema	https://github.com/validator/validator/tree/main/schema
site	https://github.com/validator/validator/tree/main/site
site	https://github.com/validator/validator/tree/main/site
src	https://github.com/validator/validator/tree/main/src
src	https://github.com/validator/validator/tree/main/src
tests	https://github.com/validator/validator/tree/main/tests
tests	https://github.com/validator/validator/tree/main/tests
.classpath	https://github.com/validator/validator/blob/main/.classpath
.classpath	https://github.com/validator/validator/blob/main/.classpath
.editorconfig	https://github.com/validator/validator/blob/main/.editorconfig
.editorconfig	https://github.com/validator/validator/blob/main/.editorconfig
.gitattributes	https://github.com/validator/validator/blob/main/.gitattributes
.gitattributes	https://github.com/validator/validator/blob/main/.gitattributes
.gitignore	https://github.com/validator/validator/blob/main/.gitignore
.gitignore	https://github.com/validator/validator/blob/main/.gitignore
.gitsubtrees.yaml	https://github.com/validator/validator/blob/main/.gitsubtrees.yaml
.gitsubtrees.yaml	https://github.com/validator/validator/blob/main/.gitsubtrees.yaml
.mailmap	https://github.com/validator/validator/blob/main/.mailmap
.mailmap	https://github.com/validator/validator/blob/main/.mailmap
.npmignore	https://github.com/validator/validator/blob/main/.npmignore
.npmignore	https://github.com/validator/validator/blob/main/.npmignore
.pre-commit-config.yaml	https://github.com/validator/validator/blob/main/.pre-commit-config.yaml
.pre-commit-config.yaml	https://github.com/validator/validator/blob/main/.pre-commit-config.yaml
.project	https://github.com/validator/validator/blob/main/.project
.project	https://github.com/validator/validator/blob/main/.project
CONTRIBUTING.md	https://github.com/validator/validator/blob/main/CONTRIBUTING.md
CONTRIBUTING.md	https://github.com/validator/validator/blob/main/CONTRIBUTING.md
CREDITS	https://github.com/validator/validator/blob/main/CREDITS
CREDITS	https://github.com/validator/validator/blob/main/CREDITS
DCO	https://github.com/validator/validator/blob/main/DCO
DCO	https://github.com/validator/validator/blob/main/DCO
Dockerfile	https://github.com/validator/validator/blob/main/Dockerfile
Dockerfile	https://github.com/validator/validator/blob/main/Dockerfile
IMPORTANT.md	https://github.com/validator/validator/blob/main/IMPORTANT.md
IMPORTANT.md	https://github.com/validator/validator/blob/main/IMPORTANT.md
LICENSE	https://github.com/validator/validator/blob/main/LICENSE
LICENSE	https://github.com/validator/validator/blob/main/LICENSE
README.md	https://github.com/validator/validator/blob/main/README.md
README.md	https://github.com/validator/validator/blob/main/README.md
_config.yml	https://github.com/validator/validator/blob/main/_config.yml
_config.yml	https://github.com/validator/validator/blob/main/_config.yml
checker.py	https://github.com/validator/validator/blob/main/checker.py
checker.py	https://github.com/validator/validator/blob/main/checker.py
npm.md	https://github.com/validator/validator/blob/main/npm.md
npm.md	https://github.com/validator/validator/blob/main/npm.md
package.json	https://github.com/validator/validator/blob/main/package.json
package.json	https://github.com/validator/validator/blob/main/package.json
playwright.config.ts	https://github.com/validator/validator/blob/main/playwright.config.ts
playwright.config.ts	https://github.com/validator/validator/blob/main/playwright.config.ts
pnpm-lock.yaml	https://github.com/validator/validator/blob/main/pnpm-lock.yaml
pnpm-lock.yaml	https://github.com/validator/validator/blob/main/pnpm-lock.yaml
vitest.config.js	https://github.com/validator/validator/blob/main/vitest.config.js
vitest.config.js	https://github.com/validator/validator/blob/main/vitest.config.js
vnu-jar.js	https://github.com/validator/validator/blob/main/vnu-jar.js
vnu-jar.js	https://github.com/validator/validator/blob/main/vnu-jar.js
vnu-java-downloader.js	https://github.com/validator/validator/blob/main/vnu-java-downloader.js
vnu-java-downloader.js	https://github.com/validator/validator/blob/main/vnu-java-downloader.js
README	https://github.com/validator/validator.git
Contributing	https://github.com/validator/validator.git
MIT license	https://github.com/validator/validator.git
	https://github.com/validator/validator.git#the-nu-html-checker-vnu
catch unintended mistakes in your HTML, CSS, and SVG	https://validator.w3.org/nu/about.html#why-validate
batch-check documents from the command line	https://github.com/validator/validator.git#usage
deploy your own instance of the vnu checker as a service	https://github.com/validator/validator.git#standalone-web-server
validator.w3.org/nu	https://validator.w3.org/nu/
	https://github.com/validator/validator.git#usage
vnu manual page	https://github.com/validator/validator/blob/main/docs/vnu.1.md
OPTIONS section of the vnu manual page	https://github.com/validator/validator/blob/main/docs/vnu.1.md#options
	https://github.com/validator/validator.git#releases
release named “latest”	https://github.com/validator/validator/releases/tag/latest
	https://github.com/validator/validator.git#sources
GitHub	https://github.com/validator/validator
instructions on how to build, test, and run the code	https://github.com/validator/validator.git#build-instructions
	https://github.com/validator/validator.git#binaries-and-packages
deploying the vnu checker service through a servlet container such as Tomcat	https://github.com/validator/validator.git#servlet-container
Dockerfile	https://ghcr.io/validator/validator
Pulling the Docker image	https://github.com/validator/validator.git#pulling-the-docker-image
npm	https://www.npmjs.com/package/vnu-jar
pip	https://github.com/svenkreiss/html5validator
brew	https://formulae.brew.sh/formula/vnu
get the latest release	https://github.com/validator/validator/releases/tag/latest
docker run -it --rm -p 8888:8888 ghcr.io/validator/validator:latest	https://github.com/validator/validator/pkgs/container/validator
npm install vnu-jar	https://www.npmjs.com/package/vnu-jar
brew install vnu	https://libraries.io/homebrew/vnu
pip install html5validator	https://github.com/svenkreiss/html5validator
Usage	https://github.com/validator/validator.git#usage
Web-based checking	https://github.com/validator/validator.git#web-based-checking
Grunt plugin for HTML validation	https://github.com/validator/grunt-html
Gulp plugin for HTML validation	https://github.com/validator/gulp-html
Maven plugin for HTML validation	https://github.com/validator/maven-plugin
html5validator pip package	https://github.com/svenkreiss/html5validator
LMVTFY: Let Me Validate That For You	https://github.com/cvrebert/lmvtfy/
	https://github.com/validator/validator.git#web-based-checking
a standalone command-line client	https://github.com/validator/validator.git#usage
validator.w3.org/nu	https://validator.w3.org/nu/
latest releases of the Linux, Windows, and macOS binaries and vnu.jar and vnu.war packages	https://github.com/validator/validator/releases/tag/latest
	https://github.com/validator/validator.git#standalone-web-server
vnu-server	https://github.com/validator/validator/blob/main/docs/vnu-server.1.md
	https://github.com/validator/validator.git#servlet-container
Manager	https://tomcat.apache.org/tomcat-8.0-doc/manager-howto.html
http://localhost/vnu/	http://localhost/vnu/
	https://github.com/validator/validator.git#http-client-for-fast-command-line-checking
Standalone web server	https://github.com/validator/validator.git#standalone-web-server
vnu-client	https://github.com/validator/validator/blob/main/docs/vnu-client.1.md
	https://github.com/validator/validator.git#pulling-the-docker-image
https://ghcr.io/validator/validator	https://ghcr.io/validator/validator
	https://github.com/validator/validator.git#build-instructions
ant	https://ant.apache.org/manual/install.html
maven	https://maven.apache.org/install.html
	https://github.com/validator/validator.git#embedded-java-usage
	https://github.com/validator/validator.git#additional-documentation
vnu wiki	https://github.com/validator/validator/wiki/
validator.github.io/validator/	https://validator.github.io/validator/
web-development	https://github.com/topics/web-development
style-linter	https://github.com/topics/style-linter
linter	https://github.com/topics/linter
w3c	https://github.com/topics/w3c
devtools	https://github.com/topics/devtools
web-standards	https://github.com/topics/web-standards
whatwg	https://github.com/topics/whatwg
html-validation	https://github.com/topics/html-validation
html-checker	https://github.com/topics/html-checker
html-linter	https://github.com/topics/html-linter
Readme	https://github.com/validator/validator.git#readme-ov-file
MIT license	https://github.com/validator/validator.git#MIT-1-ov-file
Contributing	https://github.com/validator/validator.git#contributing-ov-file
Please reload this page	https://github.com/validator/validator.git
Activity	https://github.com/validator/validator/activity
Custom properties	https://github.com/validator/validator/custom-properties
1.9k stars	https://github.com/validator/validator/stargazers
67 watching	https://github.com/validator/validator/watchers
317 forks	https://github.com/validator/validator/forks
Report repository	https://github.com/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Fvalidator%2Fvalidator&report=validator+%28user%29
Releases 28	https://github.com/validator/validator/releases
latest Latest Feb 13, 2026	https://github.com/validator/validator/releases/tag/latest
+ 27 releases	https://github.com/validator/validator/releases
Please reload this page	https://github.com/validator/validator.git
Learn more about GitHub Sponsors	https://github.com/sponsors
Packages 0	https://github.com/orgs/validator/packages?repo_name=validator
Please reload this page	https://github.com/validator/validator.git
Please reload this page	https://github.com/validator/validator.git
Contributors 74	https://github.com/validator/validator/graphs/contributors
Please reload this page	https://github.com/validator/validator.git
+ 60 contributors	https://github.com/validator/validator/graphs/contributors
Java 91.3%	https://github.com/validator/validator/search?l=java
ANTLR 6.6%	https://github.com/validator/validator/search?l=antlr
Python 1.4%	https://github.com/validator/validator/search?l=python
TypeScript 0.4%	https://github.com/validator/validator/search?l=typescript
Makefile 0.3%	https://github.com/validator/validator/search?l=makefile
Shell 0.0%	https://github.com/validator/validator/search?l=shell
	https://github.com
Terms	https://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacy	https://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Security	https://github.com/security
Status	https://www.githubstatus.com/
Community	https://github.community/
Docs	https://docs.github.com/
Contact	https://support.github.com?tags=dotcom-footer

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