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Title: HEAD request method - HTTP | MDN

Open Graph Title: HEAD request method - HTTP | MDN

Description: The HEAD HTTP method requests the metadata of a resource in the form of headers that the server would have sent if the GET method was used instead. This method can be used in cases where a URL might produce a large download, for example, a HEAD request can read the Content-Length header to check the file size before downloading the file with a GET.

Open Graph Description: The HEAD HTTP method requests the metadata of a resource in the form of headers that the server would have sent if the GET method was used instead. This method can be used in cases where a URL might produce a large download, for example, a HEAD request can read the Content-Length header to check the file size before downloading the file with a GET.

Opengraph URL: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD

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headershttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers
GEThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/GET
Content-Lengthhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Length
representation headershttps://developer.mozilla.org/en-US/docs/Glossary/Representation_header
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Syntaxhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#syntax
Exampleshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#examples
Specificationshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#specifications
Browser compatibilityhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#browser_compatibility
See alsohttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#see_also
Syntaxhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#syntax
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#request-target
Hosthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Host
Optionalhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#query
Exampleshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#examples
Successfully retrieving resource metadatahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#successfully_retrieving_resource_metadata
200 OKhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/200
cachinghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Caching
Specificationshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#specifications
HTTP Semantics# HEADhttps://httpwg.org/specs/rfc9110.html#HEAD
Browser compatibilityhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#browser_compatibility
See alsohttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD#see_also
HTTP request methodshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods
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Early-Datahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Early-Data
ECThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/ECT
ETaghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/ETag
Expecthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Expect
Expect-CThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Expect-CT
Expireshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Expires
Forwardedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Forwarded
Fromhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/From
Hosthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Host
Idempotency-Keyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Idempotency-Key
If-Matchhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/If-Match
If-Modified-Sincehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/If-Modified-Since
If-None-Matchhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/If-None-Match
If-Rangehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/If-Range
If-Unmodified-Sincehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/If-Unmodified-Since
Integrity-Policyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Integrity-Policy
Integrity-Policy-Report-Onlyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Integrity-Policy-Report-Only
Keep-Alivehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Keep-Alive
Last-Modifiedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Last-Modified
Linkhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Link
Locationhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Location
Max-Forwardshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Max-Forwards
NELhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/NEL
No-Vary-Searchhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/No-Vary-Search
Observe-Browsing-Topicshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Observe-Browsing-Topics
Originhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Origin
Origin-Agent-Clusterhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Origin-Agent-Cluster
Permissions-Policyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy
Permissions-Policy-Report-Onlyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy-Report-Only
Pragmahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Pragma
Preferhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Prefer
Preference-Appliedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Preference-Applied
Priorityhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Priority
Proxy-Authenticatehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Proxy-Authenticate
Proxy-Authorizationhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Proxy-Authorization
Rangehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Range
Refererhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referer
Referrer-Policyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Referrer-Policy
Refreshhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Refresh
Report-Tohttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Report-To
Reporting-Endpointshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Reporting-Endpoints
Repr-Digesthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Repr-Digest
Retry-Afterhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Retry-After
RTThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/RTT
Save-Datahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Save-Data
Sec-Browsing-Topicshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Browsing-Topics
Sec-CH-Device-Memoryhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Device-Memory
Sec-CH-DPRhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-DPR
Sec-CH-Prefers-Color-Schemehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Prefers-Color-Scheme
Sec-CH-Prefers-Reduced-Motionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Prefers-Reduced-Motion
Sec-CH-Prefers-Reduced-Transparencyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Prefers-Reduced-Transparency
Sec-CH-UAhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA
Sec-CH-UA-Archhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Arch
Sec-CH-UA-Bitnesshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Bitness
Sec-CH-UA-Form-Factorshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Form-Factors
Sec-CH-UA-Full-Versionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Full-Version
Sec-CH-UA-Full-Version-Listhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Full-Version-List
Sec-CH-UA-Mobilehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Mobile
Sec-CH-UA-Modelhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Model
Sec-CH-UA-Platformhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Platform
Sec-CH-UA-Platform-Versionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-Platform-Version
Sec-CH-UA-WoW64https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-UA-WoW64
Sec-CH-Viewport-Heighthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Viewport-Height
Sec-CH-Viewport-Widthhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Viewport-Width
Sec-CH-Widthhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-CH-Width
Sec-Fetch-Desthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Fetch-Dest
Sec-Fetch-Modehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Fetch-Mode
Sec-Fetch-Sitehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Fetch-Site
Sec-Fetch-Storage-Accesshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Fetch-Storage-Access
Sec-Fetch-Userhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Fetch-User
Sec-GPChttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-GPC
Sec-Private-State-Tokenhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Private-State-Token
Sec-Private-State-Token-Crypto-Versionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Private-State-Token-Crypto-Version
Sec-Private-State-Token-Lifetimehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Private-State-Token-Lifetime
Sec-Purposehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Purpose
Sec-Redemption-Recordhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Redemption-Record
Sec-Speculation-Tagshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Speculation-Tags
Sec-WebSocket-Accepthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-WebSocket-Accept
Sec-WebSocket-Extensionshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-WebSocket-Extensions
Sec-WebSocket-Keyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-WebSocket-Key
Sec-WebSocket-Protocolhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-WebSocket-Protocol
Sec-WebSocket-Versionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-WebSocket-Version
Serverhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Server
Server-Timinghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Server-Timing
Service-Workerhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Service-Worker
Service-Worker-Allowedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Service-Worker-Allowed
Service-Worker-Navigation-Preloadhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Service-Worker-Navigation-Preload
Set-Cookiehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie
Set-Loginhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Login
SourceMaphttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/SourceMap
Speculation-Ruleshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Speculation-Rules
Strict-Transport-Securityhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Strict-Transport-Security
Supports-Loading-Modehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Supports-Loading-Mode
TEhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/TE
Timing-Allow-Originhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Timing-Allow-Origin
Tkhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Tk
Trailerhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Trailer
Transfer-Encodinghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Transfer-Encoding
Upgradehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Upgrade
Upgrade-Insecure-Requestshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Upgrade-Insecure-Requests
Use-As-Dictionaryhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Use-As-Dictionary
User-Agenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/User-Agent
Varyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Vary
Viahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Via
Viewport-Widthhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Viewport-Width
Want-Content-Digesthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Want-Content-Digest
Want-Repr-Digesthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Want-Repr-Digest
Warninghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Warning
Widthhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Width
WWW-Authenticatehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/WWW-Authenticate
X-Content-Type-Optionshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Content-Type-Options
X-DNS-Prefetch-Controlhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-DNS-Prefetch-Control
X-Forwarded-Forhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For
X-Forwarded-Hosthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host
X-Forwarded-Protohttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto
X-Frame-Optionshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Frame-Options
X-Permitted-Cross-Domain-Policieshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Permitted-Cross-Domain-Policies
X-Powered-Byhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Powered-By
X-Robots-Taghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Robots-Tag
X-XSS-Protectionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-XSS-Protection
HTTP request methodshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods
CONNECThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/CONNECT
DELETEhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/DELETE
GEThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/GET
HEADhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/HEAD
OPTIONShttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/OPTIONS
PATCHhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/PATCH
POSThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/POST
PUThttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/PUT
TRACEhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Methods/TRACE
HTTP response status codeshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status
100 Continuehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/100
101 Switching Protocolshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/101
102 Processinghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/102
103 Early Hintshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/103
200 OKhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/200
201 Createdhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/201
202 Acceptedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/202
203 Non-Authoritative Informationhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/203
204 No Contenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/204
205 Reset Contenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/205
206 Partial Contenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/206
207 Multi-Statushttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/207
208 Already Reportedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/208
226 IM Usedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/226
300 Multiple Choiceshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/300
301 Moved Permanentlyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/301
302 Foundhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/302
303 See Otherhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/303
304 Not Modifiedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/304
307 Temporary Redirecthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/307
308 Permanent Redirecthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/308
400 Bad Requesthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/400
401 Unauthorizedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/401
402 Payment Requiredhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/402
403 Forbiddenhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/403
404 Not Foundhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/404
405 Method Not Allowedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/405
406 Not Acceptablehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/406
407 Proxy Authentication Requiredhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/407
408 Request Timeouthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/408
409 Conflicthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/409
410 Gonehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/410
411 Length Requiredhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/411
412 Precondition Failedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/412
413 Content Too Largehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/413
414 URI Too Longhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/414
415 Unsupported Media Typehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/415
416 Range Not Satisfiablehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/416
417 Expectation Failedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/417
418 I'm a teapothttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/418
421 Misdirected Requesthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/421
422 Unprocessable Contenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/422
423 Lockedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/423
424 Failed Dependencyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/424
425 Too Earlyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/425
426 Upgrade Requiredhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/426
428 Precondition Requiredhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/428
429 Too Many Requestshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/429
431 Request Header Fields Too Largehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/431
451 Unavailable For Legal Reasonshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/451
500 Internal Server Errorhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/500
501 Not Implementedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/501
502 Bad Gatewayhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/502
503 Service Unavailablehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/503
504 Gateway Timeouthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/504
505 HTTP Version Not Supportedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/505
506 Variant Also Negotiateshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/506
507 Insufficient Storagehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/507
508 Loop Detectedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/508
510 Not Extendedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/510
511 Network Authentication Requiredhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Status/511
CSP directiveshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy#directives
base-urihttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/base-uri
block-all-mixed-contenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/block-all-mixed-content
child-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/child-src
connect-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/connect-src
default-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/default-src
fenced-frame-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/fenced-frame-src
font-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/font-src
form-actionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/form-action
frame-ancestorshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/frame-ancestors
frame-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/frame-src
img-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/img-src
manifest-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/manifest-src
media-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/media-src
object-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/object-src
prefetch-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/prefetch-src
report-tohttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/report-to
report-urihttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/report-uri
require-trusted-types-forhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/require-trusted-types-for
sandboxhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/sandbox
script-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/script-src
script-src-attrhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/script-src-attr
script-src-elemhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/script-src-elem
style-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/style-src
style-src-attrhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/style-src-attr
style-src-elemhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/style-src-elem
trusted-typeshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/trusted-types
upgrade-insecure-requestshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/upgrade-insecure-requests
worker-srchttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy/worker-src
Permissions-Policy directiveshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy#directives
accelerometerhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/accelerometer
ambient-light-sensorhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/ambient-light-sensor
aria-notifyhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/aria-notify
attribution-reportinghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/attribution-reporting
autoplayhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/autoplay
bluetoothhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/bluetooth
browsing-topicshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/browsing-topics
camerahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/camera
captured-surface-controlhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/captured-surface-control
ch-ua-high-entropy-valueshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/ch-ua-high-entropy-values
compute-pressurehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/compute-pressure
cross-origin-isolatedhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/cross-origin-isolated
deferred-fetchhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch
deferred-fetch-minimalhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/deferred-fetch-minimal
display-capturehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/display-capture
encrypted-mediahttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/encrypted-media
fullscreenhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/fullscreen
gamepadhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/gamepad
geolocationhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/geolocation
gyroscopehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/gyroscope
hidhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/hid
identity-credentials-gethttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/identity-credentials-get
idle-detectionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/idle-detection
language-detectorhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/language-detector
local-fontshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/local-fonts
local-networkhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/local-network
local-network-accesshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/local-network-access
loopback-networkhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/loopback-network
magnetometerhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/magnetometer
microphonehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/microphone
midihttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/midi
on-device-speech-recognitionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/on-device-speech-recognition
otp-credentialshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/otp-credentials
paymenthttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/payment
picture-in-picturehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/picture-in-picture
private-state-token-issuancehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/private-state-token-issuance
private-state-token-redemptionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/private-state-token-redemption
publickey-credentials-createhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/publickey-credentials-create
publickey-credentials-gethttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/publickey-credentials-get
screen-wake-lockhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/screen-wake-lock
serialhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/serial
speaker-selectionhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/speaker-selection
storage-accesshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/storage-access
summarizerhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/summarizer
translatorhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/translator
usbhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/usb
web-sharehttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/web-share
window-managementhttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/window-management
xr-spatial-trackinghttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Permissions-Policy/xr-spatial-tracking
HTTP resources and specificationshttps://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Resources_and_specifications
MDNhttps://developer.mozilla.org/
https://github.com/mdn/
https://bsky.app/profile/developer.mozilla.org
https://x.com/mozdevnet
https://mastodon.social/@mdn
https://developer.mozilla.org/en-US/blog/rss.xml
About https://developer.mozilla.org/en-US/about
Blog https://developer.mozilla.org/en-US/blog/
Mozilla careers https://www.mozilla.org/en-US/careers/listings/
Advertise with us https://developer.mozilla.org/en-US/advertising
MDN Plus https://developer.mozilla.org/en-US/plus
Product help https://support.mozilla.org/products/mdn-plus
MDN Community https://developer.mozilla.org/en-US/community
Community resources https://developer.mozilla.org/en-US/docs/MDN/Community
Writing guidelines https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines
MDN Discord https://developer.mozilla.org/discord
MDN on GitHub https://github.com/mdn
Web technologies https://developer.mozilla.org/en-US/docs/Web
Learn web development https://developer.mozilla.org/en-US/docs/Learn_web_development
Guides https://developer.mozilla.org/en-US/docs/MDN/Guides
Tutorials https://developer.mozilla.org/en-US/docs/MDN/Tutorials
Glossary https://developer.mozilla.org/en-US/docs/Glossary
Hacks blog https://hacks.mozilla.org/
Mozillahttps://www.mozilla.org/
Website Privacy Noticehttps://www.mozilla.org/privacy/websites/
Telemetry Settingshttps://www.mozilla.org/en-US/privacy/websites/data-preferences/
Legalhttps://www.mozilla.org/about/legal/terms/mozilla
Community Participation Guidelineshttps://www.mozilla.org/about/governance/policies/participation/
a Creative Commons licensehttps://developer.mozilla.org/docs/MDN/Writing_guidelines/Attrib_copyright_license

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URLs of crawlers that visited me.