How many email clients support object-fit?

It works in 14 of 21, partial in 2, not supported in 5.

Does object-fit work in Outlook 365?

object-fit works in Outlook 365. Outlook (New) and Outlook 365 differ on 1 feature: text-shadow.

object-fit in Outlook (New)

Works object-fit works in Outlook (New).

Works in 14 of 21 · partial in 2 · not supported in 5

Which clients

Works: Gmail, Outlook 365, Outlook (New), Outlook iOS, Outlook Android, Outlook for Mac, Apple Mail, Apple Mail iOS, Samsung Mail, Thunderbird, HEY Mail, Proton Mail, Fastmail, Superhuman
Partial: Gmail Android, Gmail iOS
Not supported: Outlook Classic, Yahoo Mail, Yahoo Mail Android, Yahoo Mail iOS, AOL Mail

The fix for the clients that need it

Needed in 7 of 21: Outlook Classic, Yahoo Mail, Yahoo Mail Android and 4 more.

Use width/height attributes instead of object-fit

instead

3 lines

<!-- Crop/resize image server-side to exact dimensions -->
<img src="photo-300x200.jpg" width="300" height="200"
  alt="Photo" style="display: block; border: 0;" />

Show the original

before

2 lines

<img src="photo.jpg" style="width: 300px; height: 200px;
            object-fit: cover;" />

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Every feature in Outlook (New) · object-fit in every client

Questions

How many email clients support object-fit?: It works in 14 of 21, partial in 2, not supported in 5.
Does object-fit work in Outlook 365?: object-fit works in Outlook 365. Outlook (New) and Outlook 365 differ on 1 feature: text-shadow.

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Real captures 14 Oct 2026 on 10 installs · caniemail (MIT) via @emailens/engine 0.18.22 · tested upstream 15 Jul 2021 · data last changed 10 Nov 2026 · Outlook (New) cells are the engine's mapping