mdn/content

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The official source for MDN Web Docs content. Home to over 14,000 pages of documentation about HTML, CSS, JS, HTTP, Web APIs, and more.

Stars: 11k
Forks: 23.2k
Open beginner issues: 0
Indexed issues: 247
Avg merge: 2d 9h
Merged PRs (30d): 331

Dominant language: Markdown
License: No license data
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

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247 open issues indexed

Improve voice-change-o-matic documentation & tutorial on creating audio filters Open

area: Web Audio Content:WebAPI help wanted

mdn/content#42798 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Issue with "Browser Extensions": sub-documents not clear about limited availability of API Open

Content:WebExt on hold p2

mdn/content#1903 · 8 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
FeatureRequest with "Django Tutorial Part 10: Testing a Django web appl…": add a unit test for Admin-Site "action" Open

Content:Learn:Django

mdn/content#1915 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Make Addons/WebExtensions docs less Mozilla-biased Open

Content:WebExt on hold

mdn/content#2810 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Presentation API docs need rewrite Open

Content:WebAPI document not written effort: large help wanted

mdn/content#4025 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Content bug: AudioListener and attributes need better examples. Open

area: Web Audio Content:WebAPI effort: medium help wanted

mdn/content#4468 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Firefox screenshot in WebExtensions manifest docs for `theme` is outdated Open

Content:WebExt goal: up-to-date on hold p2 screenshot

mdn/content#31883 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Custom element constructor `disabledFeatures` property undocumented Open

area: Web Components Content:WebAPI document not written

mdn/content#6617 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add docs for -webkit-datetime-edit-*, -webkit-inner-spin-button, -webkit-calendar-picker-indicator, -webkit-clear-button Open

Content:CSS document not written help wanted

mdn/content#6778 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Missing overview of image size/resolution - intrinsic size Open

Content:Media document not written help wanted

mdn/content#6835 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
More information on how EXIF image sizing actually works Open

Content:Media

mdn/content#6836 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Issue with "Tracking Protection": (applies to standard mode, too) Open

Content:Other

mdn/content#12205 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Content suggestion: ImageDecoder & ImageTrackList how-to/tutorial Open

area: Encoding/WebCodecs Content:WebAPI document not written

mdn/content#12791 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Topic on setting HTTP priority of resource requests Open

Content:Performance document not written help wanted

mdn/content#14803 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
SVG content type missing entry for class-name Open

Content:SVG

mdn/content#15712 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Write a WebAssembly Exception Handling Guide Open

Content:wasm document not written effort: large help wanted

mdn/content#15836 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Event references should list bubbles, cancelable, and composed values Open

Content:WebAPI MDN:Project

mdn/content#19590 · 15 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Django Tutorial: early note that a custom user model is recommended Open

accepting PR Content:Learn:Django

mdn/content#20125 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 17, 2026
New section to link from longhand to shorthand property Open

Content:CSS MDN:Project

mdn/content#20793 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Restore browser-extension-template recommendation Open

Content:WebExt p2

mdn/content#21826 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Key values for keyboard events: outdated compatibility notes Open

area: UI Events Content:WebAPI needs BCD update

mdn/content#22432 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Native Messaging documentation can be more explicit about the location of application manifest Open

Content:WebExt help wanted p2

mdn/content#22534 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Outdated information about what console.time*() functions add markers to performance profilers. Open

area: Console Content:WebAPI help wanted

mdn/content#22588 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add note that WebRTC does not work offline on file: protocol Open

area: WebRTC Content:WebAPI help wanted

mdn/content#23134 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Web extension concept page: making network requests Open

Content:WebExt p1

mdn/content#23385 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Clarification of treegrid aria-readonly Open

Content:Accessibility effort: medium help wanted

mdn/content#23496 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
VirtualKeyboard API Doc Tweaks Open

Content:WebAPI effort: medium help wanted

mdn/content#23722 · 5 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Be more accurate about cross-origin protections Open

area: Performance API Content:WebAPI effort: medium help wanted

mdn/content#23740 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
textPath attribute method doesn't seem to have an effect Open

Content:SVG

mdn/content#24079 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Revise advice on `region_role` page for handling a11y for non-interactive content that overflow visually Open

Content:Accessibility help wanted

mdn/content#24553 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Using service workers: The picture in the "Basic architecture" section is misleading Open

area: Workers Content:WebAPI

mdn/content#25845 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
"Handling media support issues in web content" page is unfinished Open

Content:Media document not written help wanted

mdn/content#25887 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Article about module support in web extensions Open

Content:WebExt needs triage

mdn/content#45317 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Guide on reflow and performance optimizations Open

area: DOM/CSSOM Content:WebAPI document not written help wanted

mdn/content#26330 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Issues with WebGL Best Practices Advice Open

area: WebGL Content:WebAPI help wanted

mdn/content#26597 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Migrate NYT API example to a public API Open

Content:Learn:JavaScript

mdn/content#26602 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
leading the developer down a dead end in onupgradeneeded Open

area: IndexedDB Content:WebAPI help wanted

mdn/content#26638 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
versionchange is super important and hardly is given any attention Open

area: IndexedDB Content:WebAPI help wanted

mdn/content#26639 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Provide a page template for CSS data types Open

Content:Meta

mdn/content#26881 · 0 comments · 3 reactions · 0 assignees · Indexed Sep 17, 2026
Adding Screen Reader Examples as Audio Clips Open

Content:Learn:HTML effort: large needs decision

mdn/content#27032 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
"Using IndexedDB" guide seems to be out of sync with the more specific documentation Open

area: IndexedDB Content:WebAPI

mdn/content#27330 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
WebTransport server implementation Open

area: WebTransport Content:WebAPI document not written help wanted

mdn/content#27533 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Clarity about how to make HTTP requests from extension background scripts Open

Content:WebExt p2

mdn/content#27663 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Update user interface section Open

Content:WebExt p1

mdn/content#27732 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Cannot download with the "Download my painting" button; CSP error: “blocked the loading of a resource at data:image/png;base64” Open

Content:HTML

mdn/content#43998 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
CSS Typed OM pages have stub examples sections Open

area: DOM/CSSOM Content:WebAPI document not written

mdn/content#28118 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Deprecating ARIA `img` role in favor of `image` Open

Content:Accessibility

mdn/content#28170 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Guide needed: font-display Open

Content:CSS document not written

mdn/content#28459 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Animatable CSS properties missing list of Animatable CSS properties Open

Content:CSS needs decision

mdn/content#28554 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Document W3C WAI-ARIA Graphics Module Open

Content:Accessibility document not written help wanted

mdn/content#28707 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026

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