known-css/known-css-properties

List of standard and browser specific CSS properties.

JavaScript

127

558 commits

updated Oct 5, 2026

See the code

README

Known CSS properties

List of standard and browser specific CSS properties.

Sources

Standard properties (only 'REC', 'CR', 'LC', 'WD', 'FPWD', 'ED' statuses): http://www.w3.org/Style/CSS/all-properties.en.json
Browser supported properties from window.getComputedStyle / document.body.style

Browser versions

Desktop

Name	Versions
Chrome	14 - 137
Firefox	6 - 139
Edge	13 - 18
Safari	1.1, 2, 6, 6.2, 7 - 9, 9.1, 10.0, 11.0, 11.1, 12.0, 12.1, 13.0, 13.1, 14, 14.1, 15.1, 15.4, 16.0, 16.5, 16.6, 17.0, 17.1, 17.3, 17.6, 18.1, 18.5
Internet Explorer	8 - 11
Opera	12.10, 12.14, 12.15, 12.16, 36 - 40, 45, 56, 58

Mobile

Name	Versions
iOS Safari	6 - 8, 8.3, 9.0, 9.3, 10.0, 10.2, 10.3, 11.0, 11.2, 11.3, 11.4, 12.0 , 12.1, 13.1, 14, 14.1, 15.1, 15.4, 15.6, 16.0, 16.4, 17.0, 17.3, 17.4, 17.5, 17.6, 18.3, 18.5
Chrome for Android	30, 35, 37, 44, 46, 51, 55 - 62, 64, 66 - 76, 78 - 79, 81, 83, 91, 94, 96, 100, 101, 110, 113 - 114, 117, 124 - 126, 129, 135, 137
Firefox for Android	47, 52 - 54, 57, 58, 62 - 64, 66, 68, 81, 85, 91, 99, 101, 106, 110, 115, 118, 120, 123, 125, 126, 131, 137, 139
IE mobile	11
Opera Mobile	42.7, 43, 47.1, 73.2
Samsung Internet	4.0, 6.4, 7.4, 8.2, 9.0, 14.2, 19.0, 22.0, 23.0, 25 - 28
UC Browser for Android	11.2, 12.9, 12.10, 13.1, 13.4

JavaScript API

const properties = require('known-css-properties').all;

chrome

css

css-properties

edge

firefox

internet-explorer

safari

samsung-internet

Project health

Overall

2.0/10

Maintained

0/10

Code review

0/10

OpenSSF Scorecard

npm

known-css-properties

Latest release

0.37.0 · Jun 14, 2025

Releases this year

Significant stargazers

fisker Cheung

557 followers · starred Oct 2023

Masafumi Koba

101 followers · starred Oct 2023

Yisi

2,420 followers · starred Aug 2023

Roman Dvornov

695 followers · starred Nov 2020

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known-css/known-css-properties

List of standard and browser specific CSS properties.

JavaScript

127

558 commits

updated Oct 5, 2026

See the code

README

Known CSS properties

List of standard and browser specific CSS properties.

Sources

Standard properties (only 'REC', 'CR', 'LC', 'WD', 'FPWD', 'ED' statuses): http://www.w3.org/Style/CSS/all-properties.en.json
Browser supported properties from window.getComputedStyle / document.body.style

Browser versions

Desktop

Name	Versions
Chrome	14 - 137
Firefox	6 - 139
Edge	13 - 18
Safari	1.1, 2, 6, 6.2, 7 - 9, 9.1, 10.0, 11.0, 11.1, 12.0, 12.1, 13.0, 13.1, 14, 14.1, 15.1, 15.4, 16.0, 16.5, 16.6, 17.0, 17.1, 17.3, 17.6, 18.1, 18.5
Internet Explorer	8 - 11
Opera	12.10, 12.14, 12.15, 12.16, 36 - 40, 45, 56, 58

Mobile

Name	Versions
iOS Safari	6 - 8, 8.3, 9.0, 9.3, 10.0, 10.2, 10.3, 11.0, 11.2, 11.3, 11.4, 12.0 , 12.1, 13.1, 14, 14.1, 15.1, 15.4, 15.6, 16.0, 16.4, 17.0, 17.3, 17.4, 17.5, 17.6, 18.3, 18.5
Chrome for Android	30, 35, 37, 44, 46, 51, 55 - 62, 64, 66 - 76, 78 - 79, 81, 83, 91, 94, 96, 100, 101, 110, 113 - 114, 117, 124 - 126, 129, 135, 137
Firefox for Android	47, 52 - 54, 57, 58, 62 - 64, 66, 68, 81, 85, 91, 99, 101, 106, 110, 115, 118, 120, 123, 125, 126, 131, 137, 139
IE mobile	11
Opera Mobile	42.7, 43, 47.1, 73.2
Samsung Internet	4.0, 6.4, 7.4, 8.2, 9.0, 14.2, 19.0, 22.0, 23.0, 25 - 28
UC Browser for Android	11.2, 12.9, 12.10, 13.1, 13.4

JavaScript API

const properties = require('known-css-properties').all;

chrome

css

css-properties

edge

firefox

internet-explorer

safari

samsung-internet

Project health

Overall

2.0/10

Maintained

0/10

Code review

0/10

OpenSSF Scorecard

npm

known-css-properties

Latest release

0.37.0 · Jun 14, 2025

Releases this year

Significant stargazers

fisker Cheung

557 followers · starred Oct 2023

Masafumi Koba

101 followers · starred Oct 2023

Yisi

2,420 followers · starred Aug 2023

Roman Dvornov

695 followers · starred Nov 2020

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