Evaluate using `touch-action: manipulation;`
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Use of touch-action: manipulation; should improve touch-to-click and touch-to-scroll feedback on mobile browsers, which otherwise have to wait for a certain amount of time to disambiguate the touch, as well as triggering JavaScript events.

I haven't confirmed this myself nor verified how much it improves perceived performance on affected devices. I imagine also that if we have any touch event handlers, this may not work as expected and require additional explicit declarations to opt-in to those.

Screen Shot 2015-11-12 at 22.01.39.png (352×629 px, 65 KB)

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Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	Speed tests: Add HTML files for touch action	operations/mediawiki-config	master	+1 K -0

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Status	Assigned	Task
Declined	None	T118509 Evaluate using `touch-action: manipulation;`
Resolved	Peter	T359506 Problem automating getting correct first input delay on mobile phones
Declined	None	T385767 Run synthetic tests to measure the impact of touch-action: manipulation;

Event Timeline

Krinkle created this task.Nov 12 2015, 10:04 PM

Krinkle raised the priority of this task from to Needs Triage.

Krinkle updated the task description. (Show Details)

Krinkle added projects: Web-Team-Backlog-Archived, Performance Issue.

Krinkle added subscribers: Krinkle, Peter.

Restricted Application added subscribers: StudiesWorld, Aklapper. · View Herald TranscriptNov 12 2015, 10:04 PM

• jhobs triaged this task as Low priority.May 25 2016, 9:22 PM

• jhobs moved this task from Incoming to Needs Prioritization on the Web-Team-Backlog-Archived board.

Volker_E awarded a token.Aug 22 2016, 8:55 PM

Firefox 50 or likely 51 is in discussion to enable touch-action as last of the big browsers. Others are all at least supporting manipulation value as of now.

Might be good to talk about this in frontend standards group.

Ideally this would be done in mediawiki ui / oojs ui...

Jdlrobson moved this task from 2014-15 Q4 to Tracking on the Web-Team-Backlog-Archived board.Jun 29 2017, 9:08 PM

Jdlrobson edited projects, added Web-Team-Backlog-Archived (Tracking); removed Web-Team-Backlog-Archived.

Jdlrobson moved this task from Untriaged to Untag on the Web-Team-Backlog-Archived (Tracking) board.Jun 29 2017, 9:10 PM

Firefox 52 enabled this by default. iOS seems to be the big uncertainty factor with only supporting [[ http://caniuse.com/#feat=css-touch-action | auto and manipulation values ]].

manipulation
Enable panning and pinch zoom gestures, but disable additional non-standard gestures such as double-tap to zoom. Disabling double-tap to zoom removes the need for browsers to delay the generation of click events when the user taps the screen. This is an alias for "pan-x pan-y pinch-zoom" (which, for compatibility, is itself still valid).

Krinkle updated the task description. (Show Details)Jul 1 2017, 1:23 AM

Krinkle edited projects, added Performance-Team; removed Performance Issue.

Krinkle moved this task from Inbox, needs triage to Radar on the Performance-Team board.

Krinkle edited projects, added Performance-Team (Radar); removed Performance-Team.Aug 8 2017, 3:15 AM

Krinkle moved this task from Limbo to Watching on the Performance-Team (Radar) board.Aug 23 2017, 3:58 PM

Volker_E moved this task from Inbox to Accepted on the Front-end-Standards-Group board.Aug 23 2017, 4:24 PM

One example test-case was identified with Portal in T174002: Measure dwell-time impact of `touch-action: manipulation;`.

Volker_E moved this task from Backlog to Next-up on the OOUI board.Feb 2 2018, 2:15 AM

Krinkle moved this task from Watching to Perf recommendation on the Performance-Team (Radar) board.Jan 21 2019, 1:10 AM

In T118509#3586025, @Volker_E wrote:

One example test-case was identified with Portal in T174002: Measure dwell-time impact of `touch-action: manipulation;`.

For the record, the enablement of touch-action: manipulation has since been deployed to the Wikipedia portals, and confirmed to noticeably improve rendering performance as perceived by users (videos on the referenced task).

It's not been reverted or changed since so might be interesting to start exploring beyond the Wikipedia portal, e.g. on mobile or desktop.

Jdlrobson moved this task from Untag to Untriaged on the Web-Team-Backlog-Archived (Tracking) board.Sep 7 2021, 9:06 PM

Jdlrobson moved this task from Untriaged to Untag on the Web-Team-Backlog-Archived (Tracking) board.Sep 21 2021, 8:38 PM

Jdlrobson removed a project: Web-Team-Backlog-Archived (Tracking).Dec 7 2021, 7:47 PM

Krinkle added a project: Vector (legacy skin).Dec 7 2021, 9:11 PM

Krinkle added a project: MinervaNeue.

Jdlrobson moved this task from Needs triage to Technical on the Vector (legacy skin) board.Jan 27 2022, 4:21 PM

Jdlrobson moved this task from Technical to Tracking on the Vector (legacy skin) board.Apr 25 2022, 10:30 PM

Jdlrobson edited projects, added Vector (legacy skin) (Tracking); removed Vector (legacy skin).

Volker_E added a project: Codex.Sep 9 2022, 11:32 PM

Volker_E moved this task from Next-up to Backlog on the OOUI board.

Krinkle moved this task from Perf recommendation to Watching on the Performance-Team (Radar) board.Oct 3 2022, 9:55 PM

Restricted Application added a project: Design-System-Team. · View Herald TranscriptOct 3 2022, 9:55 PM

alistair3149 subscribed.Dec 7 2022, 5:59 AM

egardner moved this task from Inbox to Following on the Design-System-Team board.Dec 20 2022, 11:13 PM

Krinkle moved this task from Watching to Perf recommendation on the Performance-Team (Radar) board.Aug 6 2023, 10:40 PM

Krinkle edited projects, added Wikimedia-Performance-recommendation; removed Performance-Team (Radar).Aug 18 2023, 8:43 PM

Krinkle mentioned this in T358380: [3 days] Interaction to Next Paint (INP) Core Web Vital is scored as "Needs Improvement" or "Poor" for Mobile users on Desktop.Mar 8 2024, 5:20 PM

This is also being used in Vector 2022 ( T358380) where it had a positive performance impact.
(I'lll split out a Minerva specific task for this)

Jdlrobson added a subtask: T359506: Problem automating getting correct first input delay on mobile phones.Jan 2 2025, 9:44 PM

Jdlrobson added a project: Readers Essential Work 2025.Jan 10 2025, 7:37 PM

Jdlrobson moved this task from Backlog to Improve performance testing tooling on the Readers Essential Work 2025 board.

Jdlrobson moved this task from Incoming to Q3 on the Web-Team board.Jan 16 2025, 7:02 PM

Jdlrobson-WMF changed the task status from Open to In Progress.Jan 31 2025, 10:45 PM

Jdlrobson-WMF set the point value for this task to 3.Feb 3 2025, 6:45 PM

Change #1117612 had a related patch set uploaded (by Jdlrobson; author: Jdlrobson):

[operations/mediawiki-config@master] Speed tests: Add HTML files for touch action

https://gerrit.wikimedia.org/r/1117612

gerritbot added a project: Patch-For-Review.Feb 5 2025, 8:10 PM

Change #1117612 merged by Jdrewniak:

[operations/mediawiki-config@master] Speed tests: Add HTML files for touch action

https://gerrit.wikimedia.org/r/1117612

Mentioned in SAL (#wikimedia-operations) [2025-02-05T23:39:27Z] <jdrewniak@deploy2002> Started scap sync-world: Backport for [[gerrit:1117612|Speed tests: Add HTML files for touch action (T118509)]]

Mentioned in SAL (#wikimedia-operations) [2025-02-05T23:42:26Z] <jdrewniak@deploy2002> jdlrobson, jdrewniak: Backport for [[gerrit:1117612|Speed tests: Add HTML files for touch action (T118509)]] synced to the testservers (https://wikitech.wikimedia.org/wiki/Mwdebug)

Mentioned in SAL (#wikimedia-operations) [2025-02-05T23:50:38Z] <jdrewniak@deploy2002> Finished scap sync-world: Backport for [[gerrit:1117612|Speed tests: Add HTML files for touch action (T118509)]] (duration: 11m 10s)

Maintenance_bot removed a project: Patch-For-Review.Feb 6 2025, 12:31 AM

Jdlrobson-WMF changed the task status from In Progress to Open.Feb 19 2025, 12:23 AM

Jdlrobson-WMF moved this task from Q3 to Freezer on the Web-Team board.Feb 27 2025, 5:51 PM

I'm not sure, which current browser would benefit from this, I would like to be able to measure before and after. When I looked at the trace on Chrome on Android I don't see any delay or any benefit with the change (T385767).

SDunlap changed the status of subtask T385767: Run synthetic tests to measure the impact of touch-action: manipulation; from Open to Stalled.Mar 10 2025, 2:02 PM

Marking as low as we're not seeing any indication so far that there would be a benefit of doing this change.

Jdlrobson-WMF removed a project: Web-Team.Aug 19 2025, 5:08 PM

Per T118509#10615553 I am not seeing a good case for this right now.

Peter closed subtask T385767: Run synthetic tests to measure the impact of touch-action: manipulation; as Declined.Oct 21 2025, 1:16 PM

	F2958044: Screen Shot 2015-11-12 at 22.01.39.png
	Nov 12 2015, 10:04 PM

Evaluate using `touch-action: manipulation;`Closed, DeclinedPublic3 Estimated Story PointsActions

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Evaluate using `touch-action: manipulation;`
Closed, DeclinedPublic3 Estimated Story Points
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