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. Add HTTP 103 Early Hints50
2. Add customizable select element, currently `<selectlist>` (previously `<selectmenu>`)44
3. css/svg property dominant-baseline41
4. Add support table for CSP 3.0 compliance35
5. Suggestion: MediaRecorder.isTypeSupported supported types/codecs32
6. Entries for href values including `tel:1234567` and `sms:1234567`31
7. + WASM SIMD30
8. Hyphenation Options27
9. Can I use Reporting API25
10. Add WebDriver24
11. CSS3 module "Generated Content for Paged Media" and especially the target-counter function24
12. TLS ECH (Encrypted Client Hello), formerly known as ESNI (Encrypted Server Name Indication)24
13. Priority hints API23
14. WebExtensions (browser extensions)22
15. Show Support for JSON Modules22
16. JavaScript: Tail Call Support information missing21
17. Add ES7/2016 SIMD21
18. I suggest adding statistics for Aural style sheets which contain CSS properties such as "speak....20
19. XSLT Support table19
20. New feature: CSS Typed Object Model (CSS Typed OM)19
21. Support constructible stylesheets / adoptedStyleSheets18
22. Add CSS Grid Layout Module Level 3 (Masonry!)18
23. device-cmyk css feature18
24. Page Lifecycle API17
25. Add CSS property `caret-shape` and shorthand `caret`17
26. border-corner-shape17
27. ElementInternals/form-associated custom element15
28. Support Intrinsic Size Attribute15
29. Add support for DNS RRs, like HTTPS and SVCB15
30. `content: leader('.');`15
31. Geo URI scheme13
32. External import maps13
33. Check browser support for displaying MJPEG files. This is a motion JPEG file format that is supporte...13
34. Add Webassembly Threads / Threaded Webassembly13
35. Async iterators / for await of13
36. input-security13
37. I suggest support for TransferableObject types (of which there are several) 13
38. Support for SVG's "shape-rendering" CSS property. 12
39. Add Web Share Target API12
40. Color Fonts including SVG-in-OT fonts12
41. SVGZ-specific support table since iOS < 4.2 doesn't support it, but does support SVG. Not su...12
42. Soft hyphen: html entity &shy;12
43. Add the Popover API (ex: Pop Up API aka. the `popup` attribute plus more)12
44. New feature request: OCSP must-staple12
45. webcl?11
46. Add WebRTC insertable streams11
47. CSS Box Alignment Module Level 311
48. Add caniuse data for Contact Picker API11
49. CSS3 Speech Module Which browsers support it? See11
50. Add float: footnote to CSS311
51. Add Report-To API (Intervention Reports)10
52. @font-face descriptors to override font metrics10
53. Support CSS two-value display syntax10
54. one-time-code10
55. caniuse : Constructable Stylesheet10
56. Add Web Share Level 210
57. Track Intl.Segmenter10
58. queueMicrotask support10
59. Include `baseline-shift` CSS property10
60. Add ShadowRealm API10
61. webM alpha transparency10
62. Add the `<search>` element10
63. Progressive JPEGs start to show on pages faster, from low quality and eventually getting their 100% ...10
64. Add CSS Anchor Positioning10
65. HTTP2 Server Push9
66. Badging API9
67. List support for the window.fetch keepalive option9
68. Cookies: max-age9
69. Page-margin boxes (@top-center, etc)9
70. Add CSS animation timing function spring()9
71. SVG viewport-fill-opacity property support9
72. Quota Management API 9
73. Add the Quite OK Image Format (QOI) …maybe eventually9
74. Add CSS Custom Highlight API9
75. SVG viewport-fill property support8
76. WebGL extensions8
77. Add SVG `use` with external reference8
78. Add "outline follows border-radius"8
79. Add CSS module script/CSS modules8
80. Add supported elliptical curves (HTTPS/TLS)8
81. User-Agent Client Hints (UA-CH)8
82. Alt-Svc header browser support info: consider adding7
83. Add support for Trust Tokens API7
84. Audio codec - xHE-AAC / USAC7
85. input[autocomplete] (values besides on/off) 7
86. Tiff image format7
87. Add `WebOTP` to list of apis7
88. New feature request: x25519 Key Exchange7
89. HTML Modules7
90. autocorrect for input fileds7
91. Please add "isInputPending()"7
92. Support for the frame-ancestors directive7
93. Secure Cookie flag7
94. RFC7692 Compression Extensions for WebSocket7
95. Feature: Origin-bound one-time codes delivered via SMS7
96. Add Versatile Video Coding (VVC) … somewhen7
97. This regards adding support for the navigator.userAgentData7
98. Module Worker support6
99. Embedded color profiles in JPEG images.6
100. Add text-wrap: pretty6
101. Accelerated Shape Detection in Images6
102. CSS tag {content: url()}6
103. CSS 3 property: text-autospace and text-spacing6
104. Cannot see |ImageCapture| entry in the web interface.6
105. WebCrypto Key Discovery6
106. Add ECC certificates6
107. Add CSS Values and Units Module Level 4 Mathematical Expressions6
108. MediaStream Image Capture6
109. Observable6
110. Add `WebSocketStream` API6
111. Add 'require-sri-for' CSP Directive6
112. add Accessibility Object Model6
113. Add System Colors item6
114. Flag storage that is not available under private mode6
115. Add `enterkeyhint` attribute ("Enter Key Hint")6
116. Add `multipart/x-mixed-replace`6
117. Add Web Share Target API Level 26
118. new CSS trigonometry functions6
119. Geofencing API6
120. -ms-overflow-style6
121. Add autocorrect, autocapitalize, autocomplete attributes6
122. USDZ file format6
123. CSS page property (for printing)5
124. Bundled HTTP Exchanges5
125. Add font-palette-values5
126. Feature: A Well-Known URL for Changing Passwords5
127. navigator.isProtocolHandlerRegistered and .unregisterProtocolHandler5
128. Add the `:modal` pseudo-class5
129. Tracking various WebAuthn features5
130. roundRect5
131. Add support for @starting-style rule5
132. Adding Khronos gITF 2.0 for 3D models5
133. Add support tables for document.documentElement.clientWidth5
134. JS Self-Profiling API5
135. Input Events Level 1 and 25
136. Window Placement API5
137. Global Privacy Control (GPC) "Sec-GPC" HTTP header5
138. Add the `<model>` element5
139. Add supports() queries on @import5
140. Support individual CSP rules5
141. Support for MHTML5
142. mediagroup content attribute, MediaController object, VideoTrackList, AudioTrackList objects5
143. CSS Shaders - 5
144. Please track the various HTTP Set-Cookie options supported by browsers5
145. HTTP Strict Transport Security Preload5
146. audio / video autoplay attribute and play function5
147. allowtransparency5
148. Add info about css user-modify and -webkit-user-modify:read-write-plaintext-only 5
149. TCP Fast-Open. Now that Linux kernels enable this by default (and web servers likely won't be ...5
150. Add "HDR AVIF" image support4
151. The !important css thing. It's very !important ;).4
152. Add IPFS (Interplanetary File System) protocol to Caniuse4
153. Arithmetic coded JPEG support4
154. webp2 support4
155. [CSS Level 4 pseudo-class] :user-error4
156. Add Local Font Access API 4
157. Add raw sockets API4
158. Web locks4
159. Popover API4
160. CSS image() functional notation (e.g. for background-images etc). See 4
161. Payment Handler API4
162. ::-webkit-file-upload-button4
163. CSS Round Display4
164. Screen Capture4
165. add window-inactive pseudo-class4
166. Add meta "format-detection"4
167. Support aria-hidden html property4
168. Add Intl.DisplayNames4
169. Support the W3 Web Annotation standard (W3C Recommendation)4
170. Input type=email with "multiple" attribute4
171. For printing support for the size:landscape option to tell the browser what page orientation we want...4
172. CanIUse OpenSearch4
173. Support for Digital Goods API4
174. Support SVG width/height = auto4
175. New top level domains (TLD)4
176. SameParty cookie attribute4
177. Cache-Control 4
178. SVG sprites with <symbol> and <use>4
179. Add Cookie Store API4
180. Add "page based counters"3
181. CSS multicol data is mixed with fragmentation3
182. getEventListeners not listed3
183. Private Click Measurement (PCM)3
184. Graphite font support3
185. CSS view-timeline supports3
186. Public class properties3
187. Can I Use m4a?3
188. webkit-calendar-picker-indicator3
189. New browser feature: rest/spread in object literals3
190. Add `dynamic-range` media query3
191. File Handling API3
192. Add gRPC support3
193. Add the HTML focusgroup attribute3
194. Accessibility of in-browser PDF Viewer3
195. Add support for requestSubmit3
196. filename*=UTF-8''...3
197. Web bundles3
198. The "auto" value for the dir attribute, added in HTML5 to ease inserting text of unknown d...3
199. ECMAscript - static properties3
200. Missing feature: Clipboard API supported mimetypes3
201. Add Wide Color Gamut in 2D Canvas3
202. Add support for addHitRegion3
203. justify-content: space-around3
204. Show ANSI escape code for console.log.3
205. documentMode3
206. Add information for the webcal and webcals protocols for subscribing to iCalendars3
207. add iframe.csp3
208. Add Intl.DurationFormat3
209. place-items shorthand for justify and align3
210. Add tracking for "Ultra HDR JPG"3
211. display: table-caption?3
212. Support for Geometry Property (SVG 2.0) `r` in CSS3
213. Add Media Session API Coverage Information3
214. Add 'animated GIF as favicon'?3
215. Add CSS4 Grid structural selectors2
216. Add browser support for toggle()2
217. getFilesAndDirectories2
218. Wildcard "*" support for Access-Control-Allow-Headers/Methods2
219. Add block-step-size property for CSS2
220. Need full 3gp browser compatibility chart.Does it chrome browser supports 3gp format2
221. SharedMemory/Atomics2
222. Add `::target-text` (from CSS Pseudo-Elements Module Level 4)2
223. dns.resolve2
224. srcset/sizes attribute / picture element support in SVG2
225. Touch Icons (apple-touch-icon)2
226. Loading Signed Exchanges2
227. add secure payment confirmation (W3C)2
228. Basic Authentication: AuthName directive2
229. Add chrome.webrequests2
230. Load event support on link nodes to show when a stylesheet is finished loading. See for a discussio...2
231. String.prototype.split() with a regex with grouping ( parentheses ).2
232. Support of sms: and mms: in mobile browsers is not clear2
233. Add PNG cursor2
234. <semantics> element in MathML is not found in caniuse.com2
235. track support for the media query feature -ms-high-contrast2
236. Add "Window Controls Overlay"2
237. Content-Security-Policy: script-nonce2
238. Add: Webassembly Garbage Collection2
239. Add CMYK Color Space2
240. Support for CSS3 background-repeat-x and background-repeat-y properties2
241. rel="ar" support2
242. Track adoption of DOMFrameContentLoaded event2
243. Add Container Units aka. Container Relative Lengths2
244. Add the Javascript double asterisk power operator (**) to the list of supported features2
245. HTTP immutable responses2
246. Add Date.prototype.toTemporalInstant()2
247. support destructuring assignment as separate es feature2
248. Device-Memory Client Hint & navigator.deviceMemory JS API2
249. setTimeout and setInterval callback parameters2
250. SVG symbols in CSS2
251. Add TPG image file format2
252. x-webkit-speech2
253. Add information on context-stroke and context-fill2
254. Directional focus navigation: the nav-up, nav-right, nav-down, nav-left properties2
255. Add Integrated Windows Authentication2
256. Add Geolocation Sensor2
257. Support KV Storage build-in module2
258. DNS-over-HTTPS (DoH)2
259. SVG image auto height2
260. Add Fetch upload streaming2
261. HTTP Trailers2
262. CSS touch-action level 2 values2
263. EventTarget Constructor2
264. Tooltip display on focus2
265. What about showing support for various link attributes, like "subresource" or "dns-pr...2
266. `from-image` as initial value of `image-orientation`2
267. WebXR Hand Input Module - Level 12
268. Drag and Drop API - ghost image with customizable opacity2
269. video codecs2
270. add csp lv2 violation event2
271. Spatial Navigation support2
272. add captureVisibleTab2
273. stroke-linejoin support2
274. Show which browsers have a native CSV viewer2
275. Add auto-expand `<details>` for find-in-page and fragment navigations2
276. Bitmap images inside SVG files. Some browsers that support SVG, will not show embedded bitmap image...2
277. console.assert(boolean_expression)2
278. Request: nav-up, nav-down, nav-left, nav-right css3 properties2
279. add "unicode property escapes"2
280. text-space-collapse2
281. A new page for Grid track animation should be added2
282. onerror event on iframe2
283. UTF-8 Dingbats2
284. "GeometryUtils" - part of the CSSOM. Provides much better position information than existi...2
285. Add support for HTTP header X-Permitted-Cross-Domain-Policies2
286. add RTSP and RTSP 2.0 (Real Time Streaming Protocol)2
287. Metadata name: HandheldFriendly2
288. Can I use X3D?2
289. SSML2
290. Metadata name: MobileOptimized2
291. Support for hrefTranslate2
292. Animating SVG paths using CSS2
293. Input type=range with "multiple" attribute2
294. Storage Access API2
295. missing HTTP TRACE method1
296. Support Experimental "ES Pipe Operator (|>)"1
297. Add `@font-feature-values`1
298. Add entry for DTLS 1.31
299. Add MathML Core1
300. Opus: Need data for MP4 and WebM containers1
301. Add tracking for ASTC hdr profile1
302. feature request: video/MP2T1
303. Add URL.canParse()1
304. script tag onerror attribute1
305. Can you please add the Stack trace API that exists in V81
306. I suggest adding information about support for alternate HTTP methods such as PUT and PATCH.1
307. stroke-linecap support1
308. Add Memory64 browser feature1
309. Please add more detailed WebRTC features1
310. Add variable units1
311. Add `new Intl.DateTimeFormat().resolvedOptions().hour12`1
312. image-resolution. I've seen this as a good alternative for retina images as opposed to backgro...1
313. nested calc() and var()1
314. The hanging-punctuation property: Currently unsupported by any browser, but it would be nice to ...1
315. Add selection.getComposedRange() feature check1
316. Add Gradient Interpolation Color Spaces 1
317. Add compatibility data for QuickTime video format1
318. Add `blocking=render`1
319. Add `font-variant-emoji`1
320. Add `target="_new"`1
321. Add CSS Scroll Snap Module Level 21
322. Add "method of opting into following the visual order", currently `focus-order` …maybe eventually1
323. Add Background Blur API1
324. Add Web MIDI 2.0 …maybe eventually1
325. WebSerial1
326. viewport meta tag1
327. import reflection for WASM1
328. Add IndexedDB 3.01
329. Add Capture Handle1
330. Textarea wrap attribute (off, soft, hard, virtual, physical)1
331. Add Payment Request API 1.11
332. Add tech() function support (in @font-face src)1
333. Playback of videos with alpha channel1
334. Add `PWA file handlers`1
335. SVG 2: inline-size property for text1
336. Web monetization1
337. Suggestion: @font-face src OpenType collection support1
338. CAA DNS record1
339. Add "Scheduled Task API"1
340. Add VisualViewport.segments support data1
341. MediaStream Recording (1
342. Add server-timing as a trailer1
343. Add Notification Triggers1
344. Add Web Neural Network (WebNN)1
345. Add support for passwordrules input attribute1
346. Add WebDriver BiDi1
347. accesskey attribute on non-focusable elements (should cause a click element to fire1
348. <meta name="apple-mobile-web-app-capable" content="yes" />1
349. Support for XPath 2.0 (interesting for a lot of new functions, like base-uri(), matches() etc.)1
350. List support for HTTP/2's PUSH_PROMISE frame1
351. Add Change Array by Copy methods1
352. MPNG1
353. Support information for horizontal-viewport-segments and vertical-viewport-segments1
354. Support HTJ2K1
355. TLS Encrypted Client Hello (ECH)1
356. Please add support data for "CSS property: clip-path: inset()". Thank you!1
357. Add optional type syntax for JavaScript …maybe eventually1
358. Add `Notification.prototype​.showTrigger️`1
359. Web intents/Web Activities 1
360. Add CSS Toggles …maybe eventually1
361. sec-ch-prefers headers1
362. Sec-Ch-wow641
363. Add "specifying a color profile: the `@color-profile` at-rule"1
364. What is the browser support for the newly proposed "page-orientation" property?1
365. Add `media` attribute for `<meta>` element (for `<meta name="theme-color">`)1
366. Character-based alignment in a table column using text-align1
367. Add HTTP_ORIGIN feature1
368. Browser support for displaying the unicode block "Combining Diacritical Marks for Symbols"1
369. document type1
370. Support for Unicode and spaces in URL1
371. Add Range.getBoundingClientRect browser support table1
372. Support data for Unicode flag on HTML pattern attribute1
373. HTTP Content-encoding: LZFSE1
374. IPv6 support in web browsers1
375. Suggestion: support for margin-collapse?1
376. Add: Tracking Preference Expression APIs1
377. Missing computed property names1
378. DeviceOrientation and DeviceMotion events on insecure origins1
379. Audio Output Devices API: wd1
380. string-set1
381. [Feature Policy: sub-feature] Sandbox features1
382. window.watchMedia()1
383. Add compatibility for FormData1
384. Add H2 ORIGIN frame support1
385. Drag and Drop API - move constraints1
386. Add a matrix entyre for opentype-with-cff21
387. line-height support and the differences in rendering between webkit&trident and other engines.1
388. Support for Service Worker Life Cycle Events1
389. Suggested addition: navigator.cpuClass1
390. online/offline can also be used as events and are not covered by (only boolean property is covered)1
391. Report Retry-After header support1
392. date.toLocaleString support tracking plz?1
393. Add box-suppress1
394. Internationalized Domain Name1
395. https mixed mode1
396. add aria-required to caniuse, if not already there1
397. Add XSL to caniuse1
398. Add support for CSS3 move-to property1
399. Missing `StorageQuota` support1
400. aria-labelledby1
401. SHA1 certificates1
402. Add support for the HTTP header X-Download-Options1
403. add micropub1
404. support data suggestion: DOM event constructors ?1
405. [Suggestion] display: fullscreen1
406. Add High Resolution Time Level 31
407. Add css-timing 1
408. aria-current1
409. reflected-xss missing1
410. Javascript pseudoprotocol1
411. Add app-region?1
412. URLSearchParams.prototype.sort1
413. add mouse event positions event.offsetX and event.offsetY1
414. Open search autodiscovery1
415. Add "Named function expressions"1
416. Add "Controlling Font Display Per Font-Family via @font-feature-values"1
417. Video media in image contexts1
418. Please add support for supported x509 extensions for ʜᴛᴛᴘꜱ certificates1
419. event.path1
420. SHA2 certificates1
421. column combination1
422. Chained selectors1
423. Support info for the <track> element1
424. Add page for relative path in HTTP Location1
425. E4X: ECMAScript for XML1
426. iframe disallowdocumentaccess property1
427. Feature request: Token Binding Protocol1
428. x-webkit-airplay1
429. Add layout-instability support1
430. Information about WavPack audio format1
431. InsertKey Behaviour Overwrite/Normal Mode1
432. IETF RFCs1
433. Add support for svg fill-rule1
434. CMAF1
435. css animation on “content:” - works on chrome, doesn't work on Safari and Firefox1
436. Adding contain-intrinsic-size (suggestion)1
437. CSS Inline Layout1
438. Streams API: transferable streams1
439. performance.measureMemory()1
440. background-composite1
441. longdesc attribute support1
442. auto Picture-in-Picture1
443. No information about the `unselectable` HTML attribute.1
444. Add support information for font metric override descriptors1
445. bidi algorithm (for right-to-left Unicode characters)1
446. FLoC support1
447. create @Media Types1
448. Add `::-webkit-details-marker`1
449. Add: "color" and "background-color" CSS on <option> elements1
450. Add URL Protocol Handler Registration for PWAs1
451. requestPostAnimationFrame browser support?1
452. Suggestion for Which browsers.versions support multiple tbody elements in a single table?1
453. add onstorage1
454. Add WebKit Tap Highlight Color (-webkit-tap-highlight-color)?1
455. Add a footnote regarding HTMLAudioElement1
456. Refresh1
457. OfflineAudioContext1
458. DownloadURL1
459. add CSS Extensions meant for renaming1
460. request support for 'accept-charset'1
461. Use of es6 import statements in workers1
462. CSS3 new text-transform keywords1
463. step property of input field with type datetime-local and time1
464. please add the onsearch event1
465. supported-color-schemes & prefers-color-scheme1
466. <object>.contentWindow Support1
467. browserconfig.xml support info1
468. Add method1
469. How to show support for font-variation-settings within @font-face?1
470. Add Support for MPEG-4 Part 2 SP/ASP1
471. The event handler window.onscroll is missing1
472. show support for namespacing; for example <svg: namespace 1
473. baseline-middle1
474. Please add JavaScript string functions trimStart, trimEnd, trimRight, trimLeft1
475. Support for calc() in polygon and other shapes1
476. The xml:space attribute1
477. window.localMediaStream is not listed1
478. Request: IPv6 proxy functions (myIpAddressEx and friends)1
479. Clean up css-touch-action1
480. Add desynchronized (low latency canvas contexts)1
481. @top-left @bottom-center ? can you test for compatibility1
482. Add windows-theme media query selector1
483. Add CSS `form-sizing`1