HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
mdn
browser-compat-data
JSON2017–2026
mdn / browser-compat-data

browser-compat-data

Browser compatibility data for Web technologies as displayed on MDN

15Distinct people
16Mentions
0Explicit recommenders
5.8KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Browser compatibility data for Web technologies as displayed on MDN

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 1:03:20 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year16 dated mentions

Observed mentions: 2017-06-07 15:03:15 UTC to 2026-07-13 13:23:30 UTC.

01232017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments20172018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC211
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC000
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC202
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC202
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC202
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC101
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC202
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC303
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC101
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC101

What Hacker News says

3 sources
<xmp> and <plaintext> never die! I think/hope/believe that even though these elements fell out of grace of the standard bodies [1] long time ago, implementers simply cannot go against backwards compatibility here and remove them like spec suggest and MDN scaremongers that it "was not implemented in a consistent way" [2], yet last time I checked, the support in major browsers was pretty solid [3]. - [1] yet https://html.spec.whatwg.org/multipage/obsolete.html#xmp tells still acknowledges that "User agents must treat xmp elements in a manner equivalent to pre elements in terms of semantics and for purposes of rendering. (The parser has special behavior for this element though.)" - [2] https://developer.mozilla.org/en-US/docs/Web/HTML/Element/xm... - [3] https://github.com/mdn/browser-compat-data/issues/2168#issue...
In HTML Tags Memory Test
> a lot of the data on the site actually comes from MDN Eh... not really. The feature support matrix (as linked on CanIUse) comes from MDN's browser-compat-data repo. Here's the HTML element's source data: https://github.com/mdn/browser-compat-data/blob/main/html/el... This doesn't contain the testing and usage info that CanIUse cites for support, though, just which browser versions included which features. CanIUse also points to their own repo, which contains a lot of data: https://github.com/fyrd/caniuse But I can't find an easy entry point to find where they're getting the numbers for a specific element. The data on there seems to be primarily for features. So the more precise question is, where is CanIUse getting HTML element testing and usage numbers from? Because that seems to be the issue.
In Why isn't the element 100% supported on caniuse.com?

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.