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.

SuggestionVotes
1. HTTP content-encoding: zstd37
2. Add Declarative Shadow DOM37
3. WebTransport35
4. Add WebCodecs API34
5. css/svg property dominant-baseline32
6. Add CSS Color Module Level 5 (color-mix(), color-contrast(), Relative color)32
7. Add HTTP 103 Early Hints32
8. Add support table for CSP 3.0 compliance31
9. Suggestion: MediaRecorder.isTypeSupported supported types/codecs29
10. Track support for newly added spec: Dimensions (width/height) in <source> tags25
11. Entries for href values including `tel:1234567` and `sms:1234567`24
12. window.onerror - / - particularly mobile browser support24
13. Can I use Reporting API23
14. Add WebDriver23
15. Hyphenation Options22
16. Add ES7/2016 SIMD22
17. text-wrap21
18. CSS3 module "Generated Content for Paged Media" and especially the target-counter function21
19. + WASM SIMD21
20. Priority hints API20
21. JavaScript: Tail Call Support information missing19
22. I suggest adding statistics for Aural style sheets which contain CSS properties such as "speak....19
23. XSLT Support table19
24. WebExtensions (browser extensions)19
25. Support constructible stylesheets / adoptedStyleSheets18
26. New feature: CSS Typed Object Model (CSS Typed OM)18
27. TLS ECH (Encrypted Client Hello), formerly known as ESNI (Encrypted Server Name Indication)18
28. Add CSS Grid Layout Module Level 3 (Masonry!)17
29. device-cmyk css feature16
30. Page Lifecycle API16
31. border-corner-shape16
32. Show Support for JSON Modules15
33. Add Media Queries Ranges15
34. Support Intrinsic Size Attribute15
35. `content: leader('.');`14
36. Add beforeinput event13
37. Check browser support for displaying MJPEG files. This is a motion JPEG file format that is supporte...13
38. Geo URI scheme13
39. Async iterators / for await of12
40. Color Fonts including SVG-in-OT fonts12
41. input-security12
42. SVGZ-specific support table since iOS < 4.2 doesn't support it, but does support SVG. Not su...12
43. I suggest support for TransferableObject types (of which there are several) 12
44. ElementInternals/form-associated custom element12
45. New feature request: OCSP must-staple11
46. Add float: footnote to CSS311
47. Add WebRTC insertable streams11
48. Soft hyphen: html entity &shy;11
49. webcl?11
50. CSS Box Alignment Module Level 310
51. Support for SVG's "shape-rendering" CSS property. 10
52. one-time-code10
53. Add Webassembly Threads / Threaded Webassembly10
54. CSS3 Speech Module Which browsers support it? See10
55. Track Intl.Segmenter10
56. queueMicrotask support10
57. Add Web Share Level 210
58. @font-face descriptors to override font metrics10
59. Add customizable select element, currently `<selectmenu>`10
60. Add Report-To API (Intervention Reports)10
61. Include `baseline-shift` CSS property9
62. webM alpha transparency9
63. Add caniuse data for Contact Picker API9
64. Support CSS two-value display syntax9
65. caniuse : Constructable Stylesheet9
66. Quota Management API 9
67. Progressive JPEGs start to show on pages faster, from low quality and eventually getting their 100% ...9
68. Cookies: max-age9
69. Add Web Share Target API9
70. Add CSS animation timing function spring()9
71. List support for the window.fetch keepalive option9
72. HTTP2 Server Push8
73. Badging API8
74. SVG viewport-fill-opacity property support8
75. Add `accent-color` property (CSS UI 4)8
76. Add oklab() and oklch()8
77. Add supported elliptical curves (HTTPS/TLS)8
78. HTMLVideoElement.requestVideoFrameCallback()8
79. SVG viewport-fill property support8
80. WebGL extensions8
81. Tiff image format7
82. HTML Modules7
83. Add ShadowRealm API7
84. Please add "isInputPending()"7
85. Support for the frame-ancestors directive7
86. Secure Cookie flag7
87. This regards adding support for the navigator.userAgentData7
88. Add SVG `use` with external reference7
89. input[autocomplete] (values besides on/off) 7
90. Alt-Svc header browser support info: consider adding7
91. User-Agent Client Hints (UA-CH)7
92. autocorrect for input fileds7
93. Feature: Origin-bound one-time codes delivered via SMS7
94. RFC7692 Compression Extensions for WebSocket7
95. Module Worker support6
96. Page-margin boxes (@top-center, etc)6
97. Flag storage that is not available under private mode6
98. CSS 3 property: text-autospace and text-spacing6
99. WebCrypto Key Discovery6
100. Cannot see |ImageCapture| entry in the web interface.6
101. Accelerated Shape Detection in Images6
102. Add 'require-sri-for' CSP Directive6
103. CSS tag {content: url()}6
104. Add support for Trust Tokens API6
105. Add `WebOTP` to list of apis6
106. Add `enterkeyhint` attribute ("Enter Key Hint")6
107. MediaStream Image Capture6
108. Add Web Share Target API Level 26
109. New feature request: x25519 Key Exchange6
110. Geofencing API6
111. Add `multipart/x-mixed-replace`6
112. Add autocorrect, autocapitalize, autocomplete attributes6
113. Please track the various HTTP Set-Cookie options supported by browsers5
114. Add CSS module script/CSS modules5
115. Adding Khronos gITF 2.0 for 3D models5
116. navigator.isProtocolHandlerRegistered and .unregisterProtocolHandler5
117. External import maps5
118. [WebCryptoAPI] randomUUID5
119. Observable5
120. Add ECC certificates5
121. Add support tables for document.documentElement.clientWidth5
122. Add Eyedropper API to caniuse5
123. mediagroup content attribute, MediaController object, VideoTrackList, AudioTrackList objects5
124. Add System Colors item5
125. Embedded color profiles in JPEG images.5
126. Feature: A Well-Known URL for Changing Passwords5
127. HTTP Strict Transport Security Preload5
128. Track support for navigator.getInstalledRelatedApps()5
129. Add Versatile Video Coding (VVC) … somewhen5
130. Bundled HTTP Exchanges5
131. Add font-palette-values5
132. new CSS trigonometry functions5
133. -ms-overflow-style5
134. Support individual CSP rules5
135. audio / video autoplay attribute and play function5
136. USDZ file format5
137. Audio codec - xHE-AAC / USAC5
138. Screen Capture4
139. CSS Round Display4
140. New top level domains (TLD)4
141. Support for Digital Goods API4
142. Support for MHTML4
143. Support the W3 Web Annotation standard (W3C Recommendation)4
144. For printing support for the size:landscape option to tell the browser what page orientation we want...4
145. TCP Fast-Open. Now that Linux kernels enable this by default (and web servers likely won't be ...4
146. Add raw sockets API4
147. CSS image() functional notation (e.g. for background-images etc). See 4
148. Payment Handler API4
149. Add Cookie Store API4
150. Arithmetic coded JPEG support4
151. CSS Shaders - 4
152. ::-webkit-file-upload-button4
153. add Accessibility Object Model4
154. Support aria-hidden html property4
155. JS Self-Profiling API4
156. The !important css thing. It's very !important ;).4
157. Web locks4
158. Add CSS property `caret-shape` and shorthand `caret`4
159. Input Events Level 1 and 24
160. allowtransparency4
161. [CSS Level 4 pseudo-class] :user-error4
162. Add "outline follows border-radius"4
163. Add the `<model>` element4
164. roundRect4
165. Global Privacy Control (GPC) "Sec-GPC" HTTP header4
166. Cache-Control 4
167. Add support for requestSubmit3
168. Public class properties3
169. Add <data> element3
170. ActiveX3
171. place-items shorthand for justify and align3
172. [DOM API] `signal` option on EventTarget.protoype.addEventListener3
173. Add supports() queries on @import3
174. Support SVG width/height = auto3
175. Add "fetchpriority"3
176. Add Media Session API Coverage Information3
177. Can I Use m4a?3
178. ECMAscript - static properties3
179. Add information for the webcal and webcals protocols for subscribing to iCalendars3
180. The "auto" value for the dir attribute, added in HTML5 to ease inserting text of unknown d...3
181. Add meta "format-detection"3
182. http://www.w3.org/TR/web-alarms/3
183. Add support for addHitRegion3
184. add window-inactive pseudo-class3
185. Add `dynamic-range` media query3
186. Accessibility of in-browser PDF Viewer3
187. New browser feature: rest/spread in object literals3
188. Add CSS Custom Highlight API3
189. display: table-caption?3
190. CanIUse OpenSearch3
191. getEventListeners not listed3
192. SVG sprites with <symbol> and <use>3
193. getTotalLength()3
194. documentMode3
195. Add Intl.DisplayNames3
196. CSS multicol data is mixed with fragmentation3
197. Private Click Measurement (PCM)3
198. Add "Window Controls Overlay"2
199. Add support for DNS RRs, like HTTPS and SVCB2
200. stroke-linejoin support2
201. Add Integrated Windows Authentication2
202. Load event support on link nodes to show when a stylesheet is finished loading. See for a discussio...2
203. Add gRPC support2
204. Add Geolocation Sensor2
205. Spatial Navigation support2
206. Graphite font support2
207. <semantics> element in MathML is not found in caniuse.com2
208. Tracking various WebAuthn features2
209. Wildcard "*" support for Access-Control-Allow-Headers/Methods2
210. EventTarget Constructor2
211. Touch Icons (apple-touch-icon)2
212. Basic Authentication: AuthName directive2
213. webkit-calendar-picker-indicator2
214. Can I use X3D?2
215. Support KV Storage build-in module2
216. Add Wide Color Gamut in 2D Canvas2
217. onerror event on iframe2
218. track support for the media query feature -ms-high-contrast2
219. Storage Access API2
220. Add the HTML focusgroup attribute2
221. What about showing support for various link attributes, like "subresource" or "dns-pr...2
222. Add CSS Values and Units Module Level 4 Mathematical Expressions2
223. Bitmap images inside SVG files. Some browsers that support SVG, will not show embedded bitmap image...2
224. Loading Signed Exchanges2
225. support destructuring assignment as separate es feature2
226. webp2 support2
227. dns.resolve2
228. Add browser support for toggle()2
229. add "unicode property escapes"2
230. Animating SVG paths using CSS2
231. HTTP Trailers2
232. WebXR Hand Input Module - Level 12
233. Add PNG cursor2
234. Add Scoped Styles aka. CSS Scoping2
235. Add TPG image file format2
236. Request: nav-up, nav-down, nav-left, nav-right css3 properties2
237. Track adoption of DOMFrameContentLoaded event2
238. getFilesAndDirectories2
239. Support of sms: and mms: in mobile browsers is not clear2
240. Directional focus navigation: the nav-up, nav-right, nav-down, nav-left properties2
241. Add the Quite OK Image Format (QOI) …maybe eventually2
242. setTimeout and setInterval callback parameters2
243. Device-Memory Client Hint & navigator.deviceMemory JS API2
244. HTTP immutable responses2
245. justify-content: space-around2
246. Add 'animated GIF as favicon'?2
247. Support for CSS3 background-repeat-x and background-repeat-y properties2
248. Content-Security-Policy: script-nonce2
249. Input type=email with "multiple" attribute2
250. String.prototype.split() with a regex with grouping ( parentheses ).2
251. srcset/sizes attribute / picture element support in SVG2
252. Add chrome.webrequests2
253. SameParty cookie attribute2
254. CSS touch-action level 2 values2
255. Missing feature: Clipboard API supported mimetypes2
256. Window Placement API2
257. SharedMemory/Atomics2
258. x-webkit-speech2
259. Please add ES3 support2
260. add csp lv2 violation event2
261. SSML2
262. add iframe.csp2
263. SVG image auto height2
264. MediaDevices.selectAudioOutput2
265. "GeometryUtils" - part of the CSSOM. Provides much better position information than existi...2
266. add captureVisibleTab2
267. filename*=UTF-8''...2
268. Add Sanitizer API2
269. Add other values of `user-select` property2
270. CSS page property (for printing)2
271. Web bundles2
272. Add information on context-stroke and context-fill2
273. console.assert(boolean_expression)2
274. File Handling API2
275. UTF-8 Dingbats2
276. Show ANSI escape code for console.log.2
277. Information about WavPack audio format1
278. InsertKey Behaviour Overwrite/Normal Mode1
279. Add VisualViewport.segments support data1
280. Add Date.prototype.toTemporalInstant()1
281. Add server-timing as a trailer1
282. Support information for horizontal-viewport-segments and vertical-viewport-segments1
283. Sec-Ch-wow641
284. Add support for svg fill-rule1
285. Adding contain-intrinsic-size (suggestion)1
286. css animation on “content:” - works on chrome, doesn't work on Safari and Firefox1
287. CMAF1
288. Can you please add the Stack trace API that exists in V81
289. Add `Notification.prototype​.showTrigger️`1
290. Add Web Neural Network (WebNN)1
291. Add `::-webkit-details-marker`1
292. bidi algorithm (for right-to-left Unicode characters)1
293. TLS Encrypted Client Hello (ECH)1
294. Add IPFS (Interplanetary File System) protocol to Caniuse1
295. nested calc() and var()1
296. FLoC support1
297. voice-* properties aren't listed1
298. Please add more detailed WebRTC features1
299. add RTSP and RTSP 2.0 (Real Time Streaming Protocol)1
300. Add: "color" and "background-color" CSS on <option> elements1
301. feature request: video/MP2T1
302. Add URL Protocol Handler Registration for PWAs1
303. stroke-linecap support1
304. Support HTJ2K1
305. requestPostAnimationFrame browser support?1
306. E4X: ECMAScript for XML1
307. Add `media` attribute for `<meta>` element (for `<meta name="theme-color">`)1
308. Add "specifying a color profile: the `@color-profile` at-rule"1
309. Add entry for DTLS 1.31
310. Show which browsers have a native CSV viewer1
311. Can I use windowtext.1
312. Add Container Units aka. Container Relative Lengths1
313. Add `::target-text` (from CSS Pseudo-Elements Module Level 4)1
314. auto Picture-in-Picture1
315. sec-ch-prefers headers1
316. Streams API: transferable streams1
317. iframe disallowdocumentaccess property1
318. Add CMYK Color Space1
319. performance.measureMemory()1
320. Add Notification Triggers1
321. Add Local Font Access API 1
322. Add CSS Toggles …maybe eventually1
323. `from-image` as initial value of `image-orientation`1
324. Metadata name: HandheldFriendly1
325. Add optional type syntax for JavaScript …maybe eventually1
326. Metadata name: MobileOptimized1
327. Add "page based counters"1
328. Support for hrefTranslate1
329. device-pixel-content-box for ResizeObserver1
330. Add compatibility data for QuickTime video format1
331. No information about the `unselectable` HTML attribute.1
332. MPNG1
333. Add support information for font metric override descriptors1
334. Add MathML Core1
335. missing HTTP TRACE method1
336. HTTP Content-encoding: LZFSE1
337. Add layout-instability support1
338. attachEvent event handler missing from CanIUse1
339. add CSS Extensions meant for renaming1
340. Add a footnote regarding HTMLAudioElement1
341. Support info for the <track> element1
342. Drag and Drop API - move constraints1
343. Drag and Drop API - ghost image with customizable opacity1
344. Audio Output Devices API: wd1
345. DeviceOrientation and DeviceMotion events on insecure origins1
346. audio / video .canPlayType(MIMEtype)1
347. Add Range.getBoundingClientRect browser support table1
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. Add CSS4 Grid structural selectors1
354. Internationalized Domain Name1
355. column combination1
356. SHA2 certificates1
357. event.path1
358. Add "Named function expressions"1
359. Open search autodiscovery1
360. add mouse event positions event.offsetX and event.offsetY1
361. reflected-xss missing1
362. Add XSL to caniuse1
363. Add support for CSS3 move-to property1
364. Missing `StorageQuota` support1
365. aria-labelledby1
366. SHA1 certificates1
367. request support for 'accept-charset'1
368. browserconfig.xml support info1
369. Add support for the HTTP header X-Download-Options1
370. create @Media Types1
371. line-height support and the differences in rendering between webkit&trident and other engines.1
372. I suggest adding information about support for alternate HTTP methods such as PUT and PATCH.1
373. Browser support for RTP streams?1
374. Textarea wrap attribute (off, soft, hard, virtual, physical)1
375. Web intents/Web Activities 1
376. Support for XPath 2.0 (interesting for a lot of new functions, like base-uri(), matches() etc.)1
377. <meta name="apple-mobile-web-app-capable" content="yes" />1
378. accesskey attribute on non-focusable elements (should cause a click element to fire1
379. MediaStream Recording (1
380. The hanging-punctuation property: Currently unsupported by any browser, but it would be nice to ...1
381. image-resolution. I've seen this as a good alternative for retina images as opposed to backgro...1
382. script tag onerror attribute1
383. Suggestion for caniuse.com: Which browsers.versions support multiple tbody elements in a single table?1
384. Input type=range with "multiple" attribute1
385. Edge and IE don't support IndexedDB in web workers1
386. longdesc attribute support1
387. CSS Inline Layout1
388. IETF RFCs1
389. Feature request: Token Binding Protocol1
390. add onstorage1
391. background-composite1
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. ie behavior1
396. The xml:space attribute1
397. show support for namespacing; for example <svg: namespace 1
398. Add Object.prototype.watch method1
399. Please add support for getTimezoneOffset()1
400. Add support for HTTP header X-Permitted-Cross-Domain-Policies1
401. add micropub1
402. What is the browser support for the newly proposed "page-orientation" property?1
403. Refresh1
404. online/offline can also be used as events and are not covered by caniuse.com (only boolean property is covered)1
405. Report Retry-After header support1
406. date.toLocaleString support tracking plz?1
407. https mixed mode1
408. Add page for relative path in HTTP Location1
409. OfflineAudioContext1
410. DownloadURL1
411. Use of es6 import statements in workers1
412. CSS3 new text-transform keywords1
413. step property of input field with type datetime-local and time1
414. please add the onsearch event1
415. supported-color-schemes & prefers-color-scheme1
416. <object>.contentWindow Support1
417. How to show support for font-variation-settings within @font-face?1
418. Support for RegExp Named Capture Groups1
419. The event handler window.onscroll is missing1
420. baseline-middle1
421. Please add JavaScript string functions trimStart, trimEnd, trimRight, trimLeft1
422. Support for calc() in polygon and other shapes1
423. Request: IPv6 proxy functions (myIpAddressEx and friends)1
424. Clean up css-touch-action1
425. Add desynchronized (low latency canvas contexts)1
426. @top-left @bottom-center ? can you test for compatibility1
427. Add Support for MPEG-4 Part 2 SP/ASP1
428. grid-row-gap and grid-column-gap1
429. Add the Javascript double asterisk power operator (**) to the list of supported features1
430. rel="ar" support1
431. x-webkit-airplay1
432. Suggested addition: navigator.cpuClass1
433. Support for Service Worker Life Cycle Events1
434. support data suggestion: DOM event constructors ?1
435. Chained selectors1
436. [Suggestion] display: fullscreen1
437. Add High Resolution Time Level 31
438. Add: Task Scheduler API Specification 1
439. Add css-timing 1
440. aria-current1
441. add aria-required to caniuse, if not already there1
442. Add app-region?1
443. URLSearchParams.prototype.sort1
444. SVG symbols in CSS1
445. Need full 3gp browser compatibility chart.Does it chrome browser supports 3gp format1
446. Add "Controlling Font Display Per Font-Family via @font-feature-values"1
447. Video media in image contexts1
448. Please add support for supported x509 extensions for ʜᴛᴛᴘꜱ certificates1
449. Javascript pseudoprotocol1
450. Add a matrix entyre for opentype-with-cff21
451. Browser support for displaying the unicode block "Combining Diacritical Marks for Symbols"1
452. Support for Unicode and spaces in URL1
453. Support data for Unicode flag on HTML pattern attribute1
454. IPv6 support in web browsers1
455. add ime-mode1
456. Suggestion: support for margin-collapse?1
457. Add: Tracking Preference Expression APIs1
458. Missing computed property names1
459. Character-based alignment in a table column using text-align1
460. Add support information for SVG's getIntersectionList1
461. [Feature Policy: sub-feature] Sandbox features1
462. window.watchMedia()1
463. Add compatibility for FormData1
464. Add H2 ORIGIN frame support1
465. Add Capture Handle1