Use white background for transparent images
Closed, ResolvedPublic1 Estimated Story PointsBUG REPORT
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Authored By

	matthiasmullie
	May 18 2026, 1:26 PM

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Referenced Files

	F82608330: Screen Shot 2026-05-19 at 12.09.29.png
	May 19 2026, 10:14 AM

	F82608854: Screen Shot 2026-05-19 at 12.13.37.png
	May 19 2026, 10:14 AM

	F82608110: Screen Shot 2026-05-19 at 12.08.15.png
	May 19 2026, 10:14 AM

	F82608694: Screen Shot 2026-05-19 at 12.11.53.png
	May 19 2026, 10:14 AM

	F81218516: wikipedia-quote-materiale.png
	May 18 2026, 1:26 PM
	File Not Attached

	F81218512: wikipedia-quote-plasmodesma.png
	May 18 2026, 1:26 PM
	File Not Attached

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• Aklapper

matthiasmullie

mfossati

Description

Images with transparent background, e.g. diagrams, svgs don't display correctly

wikipedia-quote-plasmodesma.png (576×1,196 px, 200 KB)

wikipedia-quote-materiale.png (576×1,136 px, 215 KB)

More discussion on Slack: https://wikimedia.slack.com/archives/C08TB64J750/p1778687408787499

Acceptance criteria

Transparent images have a white background

Details

Related Changes in Gerrit:

	Subject	Author	Repo	Branch	Lines +/-
	Use white background for images	Matthias Mullie	mediawiki/extensions/ReaderExperiments	master	+1 -0

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Status	Subtype	Assigned	Task
Open		None	T416432 [Epic] Share Card experiment
Resolved		KSarabia-WMF	T424591 [Share Highlights] Bug Bash
Resolved	BUG REPORT	matthiasmullie	T426617 Use white background for transparent images

Event Timeline

matthiasmullie created this task.May 18 2026, 1:26 PM

Restricted Application added projects: FY2025-26 WE3.1 Engaging New Audiences, Reader Growth Team. · View Herald TranscriptMay 18 2026, 1:26 PM

Restricted Application added a subscriber: • Aklapper. · View Herald Transcript

matthiasmullie claimed this task.May 18 2026, 1:27 PM

matthiasmullie edited projects, added: Reader Growth Team (Sprint 4 (May 13 - 26) Q4 25/26); removed: Reader Growth Team.

matthiasmullie moved this task from Committed to Code Review on the Reader Growth Team (Sprint 4 (May 13 - 26) Q4 25/26) board.

Change #1287874 had a related patch set uploaded (by Matthias Mullie; author: Matthias Mullie):

[mediawiki/extensions/ReaderExperiments@master] Use white background for images

https://gerrit.wikimedia.org/r/1287874

gerritbot added a project: Patch-For-Review.May 18 2026, 1:27 PM

matthiasmullie added a parent task: T424591: [Share Highlights] Bug Bash.May 18 2026, 1:27 PM

Change #1287874 merged by jenkins-bot:

[mediawiki/extensions/ReaderExperiments@master] Use white background for images

https://gerrit.wikimedia.org/r/1287874

ReleaseTaggerBot added a project: MW-1.47-notes (1.47.0-wmf.3; 2026-05-19).May 18 2026, 8:00 PM

Maintenance_bot removed a project: Patch-For-Review.May 18 2026, 8:31 PM

lwatson moved this task from Code Review to QA on the Reader Growth Team (Sprint 4 (May 13 - 26) Q4 25/26) board.May 18 2026, 8:57 PM

SherryYang-WMF triaged this task as Medium priority.May 18 2026, 9:26 PM

matthiasmullie set the point value for this task to 1.May 19 2026, 6:20 AM

Before (screenshot from local env)	After (screenshot from prod) ✅

matthiasmullie closed this task as Resolved.May 19 2026, 5:00 PM

Use white background for transparent imagesClosed, ResolvedPublic1 Estimated Story PointsBUG REPORTActions

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Use white background for transparent images
Closed, ResolvedPublic1 Estimated Story PointsBUG REPORT
Actions

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