text-transform

Each of the six text-transform values defined by MDN (capitalize, uppercase, lowercase, none, full-width, full-size-kana).

Estimated Support About

95.12% + 4.88% = 100.0%

Apple Mail

macOS

12

iOS

13

Gmail

Desktop Webmail

2021-08

iOS

2021-08

Android

2021-08

Mobile Webmail

2021-08

Outlook

Windows

2007
1
2010
1
2013
1
2016
1
2019
1

Windows Mail

2021-09
1

macOS

2016
16.80

Outlook.com

2021-08
2024-01

iOS

2021-09

Android

2021-09

Yahoo! Mail

Desktop Webmail

2021-08

iOS

2021-09

Android

2021-09

AOL

Desktop Webmail

2021-09

iOS

2021-09

Android

2021-09

Samsung Email

Android

7.0

Mozilla Thunderbird

macOS

78.12

ProtonMail

Desktop Webmail

2021-09

iOS

2021-09

Android

2021-09

Fastmail

Desktop Webmail

2021-09

HEY

Desktop Webmail

2021-09

Orange

Desktop Webmail

2021-09

iOS

2021-09

Android

2021-09

LaPoste.net

Desktop Webmail

2021-09

SFR

Desktop Webmail

2021-09

iOS

2021-09

Android

2021-09

GMX

Desktop Webmail

2022-08

iOS

2022-08

Android

2022-08

1&1

Desktop Webmail

2022-08

Android

2022-08

Mail.ru

Desktop Webmail

2021-08

WEB.DE

Desktop Webmail

2022-08

iOS

2022-08

Android

2022-08

WP.pl

Desktop Webmail

2024-11

Notes

Currently, only Firefox supports the full-width and full-size-kana property values. Web clients on Firefox will support these properties.

  • 1

    Partial. lowercase value is not supported.

Resources

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Test it yourself

This feature was last tested on September 19, 2021.

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