Trigger Warning Available
Group: animation-and-movement • Guideline: avoid-physical-harm
Summary in Plain English
Where content contains triggers, a warning comes before the user reaches them, and there is a way to get the same information without the triggering content.
Why It Matters
A warning alone still forces a choice between the content and the trigger. Providing an alternative route means people with PTSD, anxiety disorders or phobias can get the information without the exposure.
Scope: When This Applies
The draft's own conditions, quoted from guidelines/groups/animation-and-movement/avoid-physical-harm/trigger-warning-available.md.
Applies when
- triggers are present.
Notes in the draft
Triggers are flashing, motion lasting more than 5 seconds, and pseudo-motion.
Test Procedure from the W3C Draft
Quoted from the provision's informative document, informative/guidelines/animation-and-movement/avoid-physical-harm/trigger-warning-available.md. It is the group's own procedure, not an editorial testing guide.
Procedure
For each trigger:
- Check if a warning is provided before the user encounters the trigger.
- Check that the same information is available without triggers.
Expected results
- #1 and #2 are true.
Methods Suggested Upstream
Implementation methods listed in the informative document.
- Provide a warning for triggers and provide an option without the triggers.
W3C Working Group Status
The draft records no open editors' notes on this provision.
W3C Threads on This Provision
6 GitHub threads carrying 16 comments, fetched from w3c/wcag3 by the tracker. Titles, numbers and states are the threads' own.
What the Argument Is About
Whether a warning before flashing or motion can ever count toward passing, whether the provision's name misleads when the draft limits triggers to flashing, motion and pseudo-motion, and how far older proposals on mood and storylines filed under the same label should reach.
Positions taken in the thread
alastc opens #632 as a placeholder to make sure the updated flashing requirements work with the warning requirement, quoting Bruce's comment that YouTubers commonly warn about flashing and give time stamps, a protocol Bruce considers sufficient for the disability-related need and believes satisfies No Flashing via the note on accessibility-supported user preferences, though it takes a bit of rationalization. Bruce asks that the note, or the easily avoidable idea, be made explicit. alastc suggests an exception or applies-when clause will probably be needed. patrickhlauke reads the idea as exempting situations often outside the author's control as long as there is at least a warning first, but says the exemption must exist in the first place and is not a carte blanche.
GreggVan objects that counting a warning amounts to saying something is accessible if users are warned not to use it; warnings are good but should not count as passing that content. He later allows that the group can say a site meets its minimum standard if it warns first, or exclude content through an exception, as long as it is clear the content is not accessible. nattarnoff, who uses motion trigger warnings in presentations and is affected by such effects, says a warning should exist but is not sufficient: faced with one, nattarnoff leaves and looks for an alternative, and closing one's eyes for a few seconds usually means missing key content.
sydneycolemanfromgoogle's #541 says the phrase trigger warning has a broader meaning and could be read as belonging to the Control possible harm - Triggers area, and asks for a more specific name or a different phrase. julierawe's #736, filed for the COGA Task Force, notes that trigger warnings usually concern emotional health, which makes the provision confusing when its note defines triggers as flashing, motion lasting more than 5 seconds, and pseudo-motion; it recommends renaming it "Motion warnings available".
In #542, supports the effort but says it requires a specific list of common triggers to be tagged; leaving the determination to products would produce wildly inconsistent results, and subjective guidelines could supplement such a list but not replace it.
SuzanneKTaylor's #88 argues content can create a mood without containing any item identifiable as a trigger, and proposes that information about the mood content is likely to encourage be available or user-selectable, aimed at long-form content such as a movie, an ebook or a VR experience. medeaoblongata sees a related gap for connotative aspects of content, as distinct from denotative or purely decorative ones, where flagging a connotation can be more useful than a description.
detlevhfischer says mood depends on the user and context rather than being a property of content, that exposing annotations would add to cognitive load for many users, and that he does not see how it could become a general measurable outcome. ericwbailey says it would be impossible to quantify, before even considering cultural differences. patrickhlauke dreads auditors having to check this kind of meta information when judging conformance.
SuzanneKTaylor's #89 proposes that interwoven storylines be programmatically distinguishable or selectable, so some subtle triggers can be avoided by watching or skipping one full story. GreggVan replies that no content is free of triggers for everyone and that AI-based AT that detects and redacts per individual is the better route. SuzanneKTaylor agrees AT may handle these outcomes, with WCAG concerned with whether AT has the access it needs, but warns that a personal trigger profile could itself be triggering or harmful if leaked, so outcomes may need to stay at simple, common triggers for now.
Agreed
- Warnings themselves are worth providing โ GreggVan calls them good and nattarnoff says there should be one; the dispute in #632 is whether they count toward passing.
- Connotation annotations on images and alt text, the separate idea Brennan raised rather than the mood metadata proposal, would surface through a user agent, OS or screen reader setting rather than by default โ detlevhfischer asked and SuzanneKTaylor confirmed.
Still open
- Whether flashing or moving content preceded by a warning can pass through an exception or applies-when clause, as alastc suggests in #632, or whether a warning should never count, as GreggVan and nattarnoff argue.
- Whether the provision is renamed, for example to "Motion warnings available" as the COGA Task Force proposes; #541 and #736 have no replies.
- Whether WCAG 3 defines a list of common triggers to be tagged (#542), unanswered.
- Whether mood belongs in WCAG at all or is an assistive-technology concern, and how it could be scoped for a conformance claim.
- How AT would evaluate long-form content โ SuzanneKTaylor's own question is whether it could judge a whole movie or would get stopped at the first ad.
Note
The provision text and its note limit triggers to flashing, motion lasting more than 5 seconds and pseudo-motion; #632 is the only thread with discussion of that provision as drafted, and #541, #542 and #736 are unanswered issue bodies. #88 and #89 are 2024 proposals by SuzanneKTaylor that predate the drafted provision and are shared with Safe content review.
- #88 Add outcome related to Mood open 10 comments · updated 2026-04-16
- #89 Add Outcome Related to Storylines open 2 comments · updated 2026-04-16
- #541 Meaning of โtrigger warningโ too broad, could be misconstrued open 0 comments · updated 2026-03-27
- #542 List common triggers open 0 comments · updated 2026-03-27
- #632 Relation from Flashing/motion requriements to the warning requirement open 4 comments · updated 2026-04-07
- #736 Need to change the name for โTrigger warning availableโ open 0 comments · updated 2026-06-26
WCAG 2.2 Criteria That Map Here
From this site's reviewed WCAG 2.2 → WCAG 3 map. The map is an interpretation, not a W3C mapping: W3C has not published one yet.
No mapping recorded. No WCAG 2.2 criterion in this site's map is recorded as a predecessor of this provision.
W3C Raw Source Text
Verbatim from guidelines/groups/animation-and-movement/avoid-physical-harm/trigger-warning-available.md · informative document: informative/guidelines/animation-and-movement/avoid-physical-harm/trigger-warning-available.md
A warning is provided before users encounter triggers and a mechanism is available to access the same information without the triggering content. :::applies-when - triggers are present. ::: :::note Triggers are flashing, motion lasting more than 5 seconds, and pseudo-motion. :::