Can I use...

Feature suggestion list

This list shows all suggested support table features based on GitHub issues. The vote count is based on total thumbs up (👍) reactions for each issue. The list is updated every hour.

1. HTTP content-encoding: zstd57
2. Add HTTP 103 Early Hints45
3. Add CSS Color Module Level 5 (color-mix(), color-contrast(), Relative color)40
4. css/svg property dominant-baseline40
5. Add support table for CSP 3.0 compliance34
6. Suggestion: MediaRecorder.isTypeSupported supported types/codecs29
7. Add customizable select element, currently `<selectmenu>`27
8. Entries for href values including `tel:1234567` and `sms:1234567`27
9. text-wrap25
10. Hyphenation Options25
11. + WASM SIMD25
12. Add WebDriver24
13. Can I use Reporting API24
14. CSS3 module "Generated Content for Paged Media" and especially the target-counter function23
15. Priority hints API23
16. TLS ECH (Encrypted Client Hello), formerly known as ESNI (Encrypted Server Name Indication)22
17. Show Support for JSON Modules21
18. Add ES7/2016 SIMD21
19. WebExtensions (browser extensions)21
20. I suggest adding statistics for Aural style sheets which contain CSS properties such as "speak....20
21. JavaScript: Tail Call Support information missing20
22. XSLT Support table19
23. New feature: CSS Typed Object Model (CSS Typed OM)19
24. Support constructible stylesheets / adoptedStyleSheets18
25. Add CSS Grid Layout Module Level 3 (Masonry!)18
26. device-cmyk css feature17
27. border-corner-shape17
28. Page Lifecycle API16
29. ElementInternals/form-associated custom element15
30. Support Intrinsic Size Attribute15
31. `content: leader('.');`15
32. input-security13
33. I suggest support for TransferableObject types (of which there are several) 13
34. Async iterators / for await of13
35. Check browser support for displaying MJPEG files. This is a motion JPEG file format that is supporte...13
36. Geo URI scheme13
37. Color Fonts including SVG-in-OT fonts12
38. SVGZ-specific support table since iOS < 4.2 doesn't support it, but does support SVG. Not su...12
39. New feature request: OCSP must-staple12
40. Add WebRTC insertable streams11
41. Add CSS property `caret-shape` and shorthand `caret`11
42. Support for SVG's "shape-rendering" CSS property. 11
43. Add float: footnote to CSS311
44. Add Webassembly Threads / Threaded Webassembly11
45. CSS3 Speech Module Which browsers support it? See11
46. webcl?11
47. Soft hyphen: html entity &shy;11
48. Add Web Share Target API11
49. Progressive JPEGs start to show on pages faster, from low quality and eventually getting their 100% ...10
50. CSS Box Alignment Module Level 310
51. Add caniuse data for Contact Picker API10
52. Add passkeys10
53. queueMicrotask support10
54. caniuse : Constructable Stylesheet10
55. Add Report-To API (Intervention Reports)10
56. one-time-code10
57. Track Intl.Segmenter10
58. Add Web Share Level 210
59. Add support for DNS RRs, like HTTPS and SVCB10
60. @font-face descriptors to override font metrics10
61. Cookies: max-age9
62. HTTP2 Server Push9
63. SVG viewport-fill property support9
64. Add CSS animation timing function spring()9
65. List support for the window.fetch keepalive option9
66. Include `baseline-shift` CSS property9
67. Support CSS two-value display syntax9
68. webM alpha transparency9
69. Quota Management API 9
70. WebGL extensions8
71. Add ShadowRealm API8
72. Add SVG `use` with external reference8
73. SVG viewport-fill-opacity property support8
74. Badging API8
75. Add the Quite OK Image Format (QOI) …maybe eventually8
76. Add supported elliptical curves (HTTPS/TLS)8
77. HTML Modules7
78. Support for the frame-ancestors directive7
79. This regards adding support for the navigator.userAgentData7
80. Alt-Svc header browser support info: consider adding7
81. User-Agent Client Hints (UA-CH)7
82. Secure Cookie flag7
83. Add `WebOTP` to list of apis7
84. Please add "isInputPending()"7
85. Page-margin boxes (@top-center, etc)7
86. Add "outline follows border-radius"7
87. RFC7692 Compression Extensions for WebSocket7
88. Tiff image format7
89. External import maps7
90. autocorrect for input fileds7
91. Feature: Origin-bound one-time codes delivered via SMS7
92. input[autocomplete] (values besides on/off) 7
93. Add System Colors item6
94. Audio codec - xHE-AAC / USAC6
95. CSS 3 property: text-autospace and text-spacing6
96. CSS tag {content: url()}6
97. Observable6
98. Add `multipart/x-mixed-replace`6
99. MediaStream Image Capture6
100. Add `enterkeyhint` attribute ("Enter Key Hint")6
101. Add Versatile Video Coding (VVC) … somewhen6
102. Add 'require-sri-for' CSP Directive6
103. Add CSS Values and Units Module Level 4 Mathematical Expressions6
104. Accelerated Shape Detection in Images6
105. Cannot see |ImageCapture| entry in the web interface.6
106. New feature request: x25519 Key Exchange6
107. Add support for Trust Tokens API6
108. Geofencing API6
109. Add CSS Custom Highlight API6
110. Embedded color profiles in JPEG images.6
111. Add Web Share Target API Level 26
112. WebCrypto Key Discovery6
113. Module Worker support6
114. Add autocorrect, autocapitalize, autocomplete attributes6
115. Add CSS module script/CSS modules6
116. Flag storage that is not available under private mode6
117. -ms-overflow-style6
118. USDZ file format5
119. Please track the various HTTP Set-Cookie options supported by browsers5
120. TCP Fast-Open. Now that Linux kernels enable this by default (and web servers likely won't be ...5
121. Add ECC certificates5
122. new CSS trigonometry functions5
123. Add supports() queries on @import5
124. Bundled HTTP Exchanges5
125. roundRect5
126. add Accessibility Object Model5
127. Add font-palette-values5
128. mediagroup content attribute, MediaController object, VideoTrackList, AudioTrackList objects5
129. navigator.isProtocolHandlerRegistered and .unregisterProtocolHandler5
130. Add info about css user-modify and -webkit-user-modify:read-write-plaintext-only 5
131. allowtransparency5
132. Feature: A Well-Known URL for Changing Passwords5
133. Support for MHTML5
134. Adding Khronos gITF 2.0 for 3D models5
135. HTTP Strict Transport Security Preload5
136. audio / video autoplay attribute and play function5
137. Support individual CSP rules5
138. Page Transitions5
139. Window Placement API5
140. CSS Shaders - 5
141. Add support tables for document.documentElement.clientWidth5
142. Input Events Level 1 and 24
143. Screen Capture4
144. Add IPFS (Interplanetary File System) protocol to Caniuse4
145. CSS page property (for printing)4
146. webp2 support4
147. Add raw sockets API4
148. Payment Handler API4
149. CSS Round Display4
150. Add Scoped Styles aka. CSS Scoping4
151. For printing support for the size:landscape option to tell the browser what page orientation we want...4
152. ::-webkit-file-upload-button4
153. Global Privacy Control (GPC) "Sec-GPC" HTTP header4
154. Web locks4
155. Arithmetic coded JPEG support4
156. Support aria-hidden html property4
157. SameParty cookie attribute4
158. Add the `<model>` element4
159. Add meta "format-detection"4
160. Support SVG width/height = auto4
161. Add Intl.DisplayNames4
162. Add the `:modal` pseudo-class4
163. CSS image() functional notation (e.g. for background-images etc). See 4
164. Support for Digital Goods API4
165. [CSS Level 4 pseudo-class] :user-error4
166. Cache-Control 4
167. Input type=email with "multiple" attribute4
168. CanIUse OpenSearch4
169. Tracking various WebAuthn features4
170. SVG sprites with <symbol> and <use>4
171. Support the W3 Web Annotation standard (W3C Recommendation)4
172. JS Self-Profiling API4
173. New top level domains (TLD)4
174. The !important css thing. It's very !important ;).4
175. Add Cookie Store API4
176. place-items shorthand for justify and align3
177. The "auto" value for the dir attribute, added in HTML5 to ease inserting text of unknown d...3
178. Add `dynamic-range` media query3
179. Add "HDR AVIF" image support3
180. Can I Use m4a?3
181. Private Click Measurement (PCM)3
182. Add the Pop Up API aka. the `popup` attribute plus more3
183. add iframe.csp3
184. add window-inactive pseudo-class3
185. webkit-calendar-picker-indicator3
186. Graphite font support3
187. Add information for the webcal and webcals protocols for subscribing to iCalendars3
188. getEventListeners not listed3
189. CSS view-timeline supports3
190. Add gRPC support3
191. justify-content: space-around3
192. Show ANSI escape code for console.log.3
193. Add Local Font Access API 3
194. Add the HTML focusgroup attribute3
195. display: table-caption?3
196. Accessibility of in-browser PDF Viewer3
197. File Handling API3
198. New browser feature: rest/spread in object literals3
199. getTotalLength()3
200. Add support for addHitRegion3
201. documentMode3
202. Add "page based counters"3
203. Add Wide Color Gamut in 2D Canvas3
204. Public class properties3
205. Web bundles3
206. CSS multicol data is mixed with fragmentation3
207. Add support for requestSubmit3
208. ECMAscript - static properties3
209. Add Media Session API Coverage Information3
210. Add Integrated Windows Authentication2
211. support destructuring assignment as separate es feature2
212. Show which browsers have a native CSV viewer2
213. Metadata name: MobileOptimized2
214. Add the Javascript double asterisk power operator (**) to the list of supported features2
215. Support KV Storage build-in module2
216. Support for hrefTranslate2
217. rel="ar" support2
218. add RTSP and RTSP 2.0 (Real Time Streaming Protocol)2
219. Add information on context-stroke and context-fill2
220. WebXR Hand Input Module - Level 12
221. Wildcard "*" support for Access-Control-Allow-Headers/Methods2
222. Add `::target-text` (from CSS Pseudo-Elements Module Level 4)2
223. Storage Access API2
224. stroke-linejoin support2
225. EventTarget Constructor2
226. dns.resolve2
227. track support for the media query feature -ms-high-contrast2
228. Add Geolocation Sensor2
229. <semantics> element in MathML is not found in caniuse.com2
230. Track adoption of DOMFrameContentLoaded event2
231. Missing feature: Clipboard API supported mimetypes2
232. add "unicode property escapes"2
233. Loading Signed Exchanges2
234. `from-image` as initial value of `image-orientation`2
235. Spatial Navigation support2
236. Add Fetch upload streaming2
237. srcset/sizes attribute / picture element support in SVG2
238. Support of sms: and mms: in mobile browsers is not clear2
239. Add support for HTTP header X-Permitted-Cross-Domain-Policies2
240. CSS touch-action level 2 values2
241. Add chrome.webrequests2
242. Add `WebSocketStream` API2
243. Content-Security-Policy: script-nonce2
244. Directional focus navigation: the nav-up, nav-right, nav-down, nav-left properties2
245. SharedMemory/Atomics2
246. x-webkit-speech2
247. Add 'animated GIF as favicon'?2
248. Tooltip display on focus2
249. Input type=range with "multiple" attribute2
250. What about showing support for various link attributes, like "subresource" or "dns-pr...2
251. Add CSS4 Grid structural selectors2
252. Basic Authentication: AuthName directive2
253. Container Queries should be broken out into three pages2
254. A new page for Grid track animation should be added2
255. text-space-collapse2
256. console.assert(boolean_expression)2
257. Bitmap images inside SVG files. Some browsers that support SVG, will not show embedded bitmap image...2
258. Can I use X3D?2
259. Drag and Drop API - ghost image with customizable opacity2
260. onerror event on iframe2
261. HTTP Trailers2
262. String.prototype.split() with a regex with grouping ( parentheses ).2
263. filename*=UTF-8''...2
264. Support for CSS3 background-repeat-x and background-repeat-y properties2
265. Add Date.prototype.toTemporalInstant()2
266. Load event support on link nodes to show when a stylesheet is finished loading. See for a discussio...2
267. SSML2
268. Add PNG cursor2
269. "GeometryUtils" - part of the CSSOM. Provides much better position information than existi...2
270. add csp lv2 violation event2
271. SVG image auto height2
272. add captureVisibleTab2
273. UTF-8 Dingbats2
274. Touch Icons (apple-touch-icon)2
275. Add browser support for toggle()2
276. Add TPG image file format2
277. Metadata name: HandheldFriendly2
278. Add "Window Controls Overlay"2
279. getFilesAndDirectories2
280. Request: nav-up, nav-down, nav-left, nav-right css3 properties2
281. HTTP immutable responses2
282. Device-Memory Client Hint & navigator.deviceMemory JS API2
283. SVG symbols in CSS2
284. setTimeout and setInterval callback parameters2
285. Animating SVG paths using CSS2
286. Add `blocking=render`1
287. Add selection.getComposedRange() feature check1
288. Suggestion: @font-face src OpenType collection support1
289. Add CSS Anchor Positioning …maybe eventually1
290. Add Background Blur API1
291. Web monetization1
292. Add `PWA file handlers`1
293. Add auto-expand `<details>` for find-in-page and fragment navigations1
294. import reflection for WASM1
295. Add tech() function support (in @font-face src)1
296. Add "method of opting into following the visual order", currently `focus-order` …maybe eventually1
297. Add Web MIDI 2.0 …maybe eventually1
298. Add IndexedDB 3.01
299. No information about the `unselectable` HTML attribute.1
300. Playback of videos with alpha channel1
301. bidi algorithm (for right-to-left Unicode characters)1
302. Add Payment Request API 1.11
303. Add support information for font metric override descriptors1
304. device-pixel-content-box for ResizeObserver1
305. Add VisualViewport.segments support data1
306. Add CSS Scroll Snap Module Level 21
307. Please add more detailed WebRTC features1
308. Add "specifying a color profile: the `@color-profile` at-rule"1
309. missing HTTP TRACE method1
310. Add entry for DTLS 1.31
311. MPNG1
312. Add server-timing as a trailer1
313. Can you please add the Stack trace API that exists in V81
314. stroke-linecap support1
315. Add Web Neural Network (WebNN)1
316. Support HTJ2K1
317. nested calc() and var()1
318. Can I use windowtext.1
319. Add CMYK Color Space1
320. Add Notification Triggers1
321. Add compatibility data for QuickTime video format1
322. Add MathML Core1
323. Add Container Units aka. Container Relative Lengths1
324. Add `media` attribute for `<meta>` element (for `<meta name="theme-color">`)1
325. line-height support and the differences in rendering between webkit&trident and other engines.1
326. FLoC support1
327. feature request: video/MP2T1
328. Add `target="_new"`1
329. Add `font-variant-emoji`1
330. Add "Scheduled Task API"1
331. Add `::-webkit-details-marker`1
332. Add Capture Handle1
333. Add: "color" and "background-color" CSS on <option> elements1
334. Add URL Protocol Handler Registration for PWAs1
335. Support information for horizontal-viewport-segments and vertical-viewport-segments1
336. TLS Encrypted Client Hello (ECH)1
337. Sec-Ch-wow641
338. sec-ch-prefers headers1
339. requestPostAnimationFrame browser support?1
340. Add CSS Toggles …maybe eventually1
341. Add `Notification.prototype​.showTrigger️`1
342. Add optional type syntax for JavaScript …maybe eventually1
343. E4X: ECMAScript for XML1
344. accesskey attribute on non-focusable elements (should cause a click element to fire1
345. Support for Service Worker Life Cycle Events1
346. auto Picture-in-Picture1
347. reflected-xss missing1
348. Add support for mediacapture-output API's sinkID1
349. document type1
350. Add HTTP_ORIGIN feature1
351. Add box-suppress1
352. string-set1
353. Internationalized Domain Name1
354. column combination1
355. SHA2 certificates1
356. event.path1
357. Add "Named function expressions"1
358. Open search autodiscovery1
359. add mouse event positions event.offsetX and event.offsetY1
360. Add XSL to caniuse1
361. DeviceOrientation and DeviceMotion events on insecure origins1
362. Add support for CSS3 move-to property1
363. Missing `StorageQuota` support1
364. aria-labelledby1
365. SHA1 certificates1
366. Add support for the HTTP header X-Download-Options1
367. add micropub1
368. support data suggestion: DOM event constructors ?1
369. [Suggestion] display: fullscreen1
370. Add High Resolution Time Level 31
371. Add css-timing 1
372. aria-current1
373. add aria-required to caniuse, if not already there1
374. Add Range.getBoundingClientRect browser support table1
375. Audio Output Devices API: wd1
376. URLSearchParams.prototype.sort1
377. add onstorage1
378. The hanging-punctuation property: Currently unsupported by any browser, but it would be nice to ...1
379. <meta name="apple-mobile-web-app-capable" content="yes" />1
380. image-resolution. I've seen this as a good alternative for retina images as opposed to backgro...1
381. Support for XPath 2.0 (interesting for a lot of new functions, like base-uri(), matches() etc.)1
382. script tag onerror attribute1
383. Suggestion for Which browsers.versions support multiple tbody elements in a single table?1
384. create @Media Types1
385. Web intents/Web Activities 1
386. longdesc attribute support1
387. CSS Inline Layout1
388. IETF RFCs1
389. Feature request: Token Binding Protocol1
390. background-composite1
391. Drag and Drop API - move constraints1
392. Add WebKit Tap Highlight Color (-webkit-tap-highlight-color)?1
393. Add windows-theme media query selector1
394. window.localMediaStream is not listed1
395. The xml:space attribute1
396. show support for namespacing; for example <svg: namespace 1
397. Add method1
398. browserconfig.xml support info1
399. request support for 'accept-charset'1
400. add CSS Extensions meant for renaming1
401. Textarea wrap attribute (off, soft, hard, virtual, physical)1
402. Add a footnote regarding HTMLAudioElement1
403. Support info for the <track> element1
404. Add app-region?1
405. Need full 3gp browser compatibility chart.Does it chrome browser supports 3gp format1
406. performance.measureMemory()1
407. Add desynchronized (low latency canvas contexts)1
408. please add the onsearch event1
409. supported-color-schemes & prefers-color-scheme1
410. <object>.contentWindow Support1
411. Refresh1
412. How to show support for font-variation-settings within @font-face?1
413. The event handler window.onscroll is missing1
414. baseline-middle1
415. Please add JavaScript string functions trimStart, trimEnd, trimRight, trimLeft1
416. Support for calc() in polygon and other shapes1
417. I suggest adding information about support for alternate HTTP methods such as PUT and PATCH.1
418. Request: IPv6 proxy functions (myIpAddressEx and friends)1
419. Clean up css-touch-action1
420. @top-left @bottom-center ? can you test for compatibility1
421. CSS3 new text-transform keywords1
422. Add Support for MPEG-4 Part 2 SP/ASP1
423. x-webkit-airplay1
424. What is the browser support for the newly proposed "page-orientation" property?1
425. Add layout-instability support1
426. Information about WavPack audio format1
427. InsertKey Behaviour Overwrite/Normal Mode1
428. Add support for svg fill-rule1
429. CMAF1
430. css animation on “content:” - works on chrome, doesn't work on Safari and Firefox1
431. Adding contain-intrinsic-size (suggestion)1
432. Streams API: transferable streams1
433. iframe disallowdocumentaccess property1
434. step property of input field with type datetime-local and time1
435. Use of es6 import statements in workers1
436. Add "Controlling Font Display Per Font-Family via @font-feature-values"1
437. Character-based alignment in a table column using text-align1
438. Video media in image contexts1
439. Please add support for supported x509 extensions for ʜᴛᴛᴘꜱ certificates1
440. Chained selectors1
441. Javascript pseudoprotocol1
442. Browser support for displaying the unicode block "Combining Diacritical Marks for Symbols"1
443. Support for Unicode and spaces in URL1
444. Support data for Unicode flag on HTML pattern attribute1
445. HTTP Content-encoding: LZFSE1
446. IPv6 support in web browsers1
447. Suggestion: support for margin-collapse?1
448. Add: Tracking Preference Expression APIs1
449. Missing computed property names1
450. [Feature Policy: sub-feature] Sandbox features1
451. DownloadURL1
452. window.watchMedia()1
453. Add compatibility for FormData1
454. Add H2 ORIGIN frame support1
455. Add a matrix entyre for opentype-with-cff21
456. MediaStream Recording (1
457. Suggested addition: navigator.cpuClass1
458. online/offline can also be used as events and are not covered by (only boolean property is covered)1
459. Report Retry-After header support1
460. date.toLocaleString support tracking plz?1
461. https mixed mode1
462. Add page for relative path in HTTP Location1
463. OfflineAudioContext1
464. SVG 2: inline-size property for text1