whatwg/fetch

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Fetch Standard

Stars: 2.3k
Forks: 403
Open beginner issues: 0
Indexed issues: 291
Avg merge: 21h 16m
Merged PRs (30d): 4

Dominant language: HTML
License: No license data
Last GitHub push: Sep 2, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

291 open issues indexed

COEP credentials/taint Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

whatwg/fetch#1958 · Opened Sep 19, 2026
Add `crossOriginStorage` option on `RequestInit` Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1954 · Opened Aug 26, 2026
Add a dfn for about:blank Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

whatwg/fetch#1951 · 1 comment · Opened Aug 20, 2026
Fetch Posture Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

whatwg/fetch#1946 · Opened Aug 12, 2026
Either expose HTTP Header to Javascript or expose the cookies to fetch API's response Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1947 · 3 comments · Opened Aug 12, 2026
Integrating the HTTP QUERY method (RFC 10008): method normalization, CORS, and caching Open

needs implementer interest topic: http

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1938 · 2 comments · Opened Jun 30, 2026
Hide range values from no-cors cross-origin range requests Open

security-tracker security/privacy topic: same-origin policy topic: service workers

Difficulty 4/5 3-5 days Newbie friendliness 45/100

whatwg/fetch#1936 · 11 comments · Opened Jun 23, 2026
Introduce a depth limit of nested content encodings Open

addition/proposal needs implementer interest topic: http

Difficulty 4/5 3-5 days Newbie friendliness 55/100

whatwg/fetch#1933 · 4 comments · Opened Jun 9, 2026
Request for Feedback: Attribution API Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1927 · 1 comment · Opened May 13, 2026
Tighten network partition key (at least in "webtransport" mode) Open

topic: connections topic: webtransport

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1926 · Opened May 4, 2026
Disallowing `Authorization` in CORS-preflight wildcards is currently not web compatible Open

compat topic: cors

Difficulty 4/5 3-5 days Newbie friendliness 45/100

whatwg/fetch#1919 · 4 comments · Opened Apr 7, 2026
Add ability to opt-out of back-forward cache Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 45/100

whatwg/fetch#1917 · 1 comment · Opened Apr 1, 2026
Interim responses (1xx) Open

addition/proposal needs implementer interest topic: api topic: http

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1913 · 1 reaction · Opened Mar 11, 2026
Should the reload-navigation flag behave similarly to the "reload" cache mode? Open

topic: http

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1899 · 1 comment · 2 reactions · Opened Dec 18, 2025
Request with credentials included, but only if they are partitioned Open

addition/proposal needs implementer interest topic: cookies

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1892 · 5 comments · Opened Dec 2, 2025
Add `Prefer: safe` HTTP header Open

addition/proposal compat needs implementer interest topic: http

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1891 · 8 comments · 1 reaction · Opened Dec 1, 2025
URLs of intermediary redirects are leakable in practice (same-origin) Open

security-tracker security/privacy topic: redirects

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1890 · Opened Nov 30, 2025
Fill in CONNECT pseudo-headers automatically (e.g. from request mode) Open

integration topic: websockets

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1881 · Opened Nov 21, 2025
Allow user agents to use more permissive header validation in extensions Open

addition/proposal integration needs concrete proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1878 · 13 comments · Opened Nov 13, 2025
Allow updating of render-blocking status Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1875 · Opened Nov 5, 2025
`Response.redirect` should return object whose headers are mutable, as well as `Response.json` Open

addition/proposal needs concrete proposal topic: api

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1868 · 3 comments · 1 reaction · Opened Oct 18, 2025
static method: `Response.html`? Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1865 · 5 comments · 2 reactions · Opened Oct 6, 2025
Investigate usage of "append" for headers Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

whatwg/fetch#1850 · 4 comments · 1 reaction · Opened Aug 18, 2025
Compression dictionary support for opaque responses Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1839 · 12 comments · Opened Jun 30, 2025
New Proposal: Fetch retry Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1838 · 36 comments · 8 reactions · Opened Jun 27, 2025
Feature Request: `response.blob({ type })` and `response.file({ type?, name?, lastModified? })` Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1836 · 2 reactions · Opened Jun 16, 2025
data: URLs and Content-Length header Open

interop

Difficulty 4/5 3-5 days Newbie friendliness 25/100

whatwg/fetch#1834 · 7 comments · Opened Jun 5, 2025
Should Request be usable with JS Explicit Resource Management? Open

addition/proposal integration

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1833 · 1 comment · 1 reaction · Opened Jun 3, 2025
New Proposal: Making Fetch Promises work better (i.e. abort-able) and with other APIs(e.g. Promise Combinators) Open

Difficulty 5/5 Over a week Newbie friendliness 18/100

whatwg/fetch#1831 · 2 reactions · Opened May 27, 2025
Secure cookies should be permitted on secure requests, not just where there is a `https` scheme Open

topic: cookies

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1827 · 8 comments · 1 reaction · Opened May 19, 2025
Layered Cookies integration Open

topic: cookies

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1826 · Opened May 19, 2025
Discussion: the term for non-preflighted request ("simple request") Open

clarification impacts documentation topic: cors

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1824 · 9 comments · 2 reactions · Opened May 15, 2025
Ensure that browsers never send a malformed request except by explicit request from scripts Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1822 · 3 comments · Opened May 7, 2025
Add `Signature` to `CORS non-wildcard request-header name` Open

security-tracker security/privacy topic: cors topic: http

Difficulty 4/5 3-5 days Newbie friendliness 35/100

whatwg/fetch#1819 · 4 comments · Opened Apr 1, 2025
fetch keepAlive inflightKeepaliveBytes errors cannot be handled Open

topic: api

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1816 · 4 reactions · Opened Mar 24, 2025
A resource timing entry is not created if the end of a non-null response body is not reached and there is no consume body steps Open

topic: timing

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1813 · 3 comments · Opened Mar 5, 2025
Fetch Timing Info's end time is set to a relative timestamp, when it should be the original captured unsafe current time Open

topic: timing

whatwg/fetch#1812 · 2 comments · 1 assignee · Opened Mar 5, 2025
blob() method: define behavior when get the MIME type return null Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1802 · 1 comment · Opened Jan 17, 2025
Proposal: response.base64() Open

addition/proposal needs implementer interest topic: api

Difficulty 5/5 Over a week Newbie friendliness 28/100

whatwg/fetch#1800 · 10 comments · 1 reaction · Opened Jan 8, 2025
Proposal: `Request.json` helper Open

addition/proposal needs implementer interest topic: api

Difficulty 5/5 Over a week Newbie friendliness 35/100

whatwg/fetch#1791 · 3 comments · 5 reactions · Opened Dec 7, 2024
Allow Origin and Access-Control-Allow-Origin to have multiple values Open

addition/proposal needs implementer interest topic: cors

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1790 · 4 comments · 1 reaction · Opened Dec 5, 2024
HTTPS-RR upgrades are in the wrong place Open

topic: connections topic: redirects

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1789 · Opened Nov 26, 2024
HTTP/2 and Content-Length Open

needs tests topic: http

Difficulty 4/5 3-5 days Newbie friendliness 30/100

whatwg/fetch#1786 · 1 comment · Opened Nov 14, 2024
Response body being null on 204/205/304 etc doesn't match any implementation Open

topic: api topic: http

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1779 · 2 comments · Opened Oct 23, 2024
Add request Content-Length to PerformanceResourceTiming entries Open

addition/proposal needs implementer interest

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1777 · 2 comments · 1 reaction · Opened Sep 25, 2024
Can the set of safelisted methods be extended? Open

clarification

Difficulty 5/5 Over a week Newbie friendliness 25/100

whatwg/fetch#1774 · 7 comments · 1 reaction · Opened Sep 19, 2024
Anchor permanence for integration with compression dictionary spec? Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

whatwg/fetch#1771 · 5 comments · Opened Aug 28, 2024
redirects and etag/if-none-match Open

topic: http topic: redirects

Difficulty 4/5 3-5 days Newbie friendliness 35/100

whatwg/fetch#1770 · 20 comments · Opened Aug 23, 2024
Add Range to no-cors safelisted headers Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

whatwg/fetch#1767 · 2 comments · Opened Aug 16, 2024
Spec WWW-Authenticate and Proxy-Authenticate handling in HTTP-network-or-cache fetch Open

needs concrete proposal topic: http

Difficulty 5/5 Over a week Newbie friendliness 30/100

whatwg/fetch#1766 · 2 reactions · Opened Aug 13, 2024

whatwg/fetch

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