Social Media Accessibility: Subtitle Obligations under the EAA

Plenty of marketing teams looked at this once in the summer of 2025, ticked a box and have not touched it since. The legal position is neither as sweeping as the panic posts claim, nor as consequence-free as doing nothing suggests. The European Accessibility Act does not hit every company account. It does hit more videos than most people assume, and it hits them at a point where most editorial calendars schedule no check at all.

What accessibility on social media actually requires

Accessibility on social media breaks down into four tasks that sit at completely different points in the production process: subtitles for anything with sound, alt text for anything visual, sufficient contrast for text in the image, audio description for videos whose visual information never appears in the audio. Three of them cost you minutes per asset once they are part of the workflow. All four cost weeks if you pull them retroactively across a back catalogue.

The benchmark for review is the Web Content Accessibility Guidelines 2.1 at level AA. The statute does not put it that way. The chain runs via the harmonised European standard EN 301 549, which points websites to the WCAG success criteria at conformance levels A and AA. The German Bundesfachstelle Barrierefreiheit describes exactly that route in its FAQ on the BFSG. Formally that leaves questions open, in practice WCAG 2.1 AA is the yardstick you get measured against.

Who the European Accessibility Act really covers

Directive (EU) 2019/882 has applied since 28 June 2025. It covers products placed on the market after that date and services provided to consumers after it. It entered into force back in 2019; the years in between were the transposition period for the member states. Germany implemented it in the Barrierefreiheitsstärkungsgesetz (BFSG); the cut-off dates come from the directive and therefore apply identically across the EU, whatever the national act is called (as of August 2026).

The scope is narrower than the summaries suggest. It covers specific products and services: electronic communications, access to audiovisual media services, passenger transport, banking services, e-books and e-commerce. The terms social media and marketing video do not appear in the legal text. The subtitle obligation follows indirectly: Annex I requires the website of a covered service to be perceivable, operable, understandable and robust, and via EN 301 549 you end up at subtitles for pre-recorded video. Article 3 of the directive names subtitles for deaf and hard of hearing people, along with audio description, as explicit elements of accessible services.

So what matters is not the platform but the function of the video. If you post to YouTube or Instagram purely as a hobby, your videos do not have to be accessible. If you produce a product video, upload it to YouTube and embed it in your own online shop, you are covered. Microenterprises are exempt for services under Article 4(5).

The honest short version for a marketing team: if your company runs a shop, offers banking or passenger transport services, or provides access to audiovisual media services, then every video that becomes part of that service belongs in an accessibility process. If none of that applies, accessibility is a quality and reach decision instead of a compliance question. It still makes sense, for the reasons set out below.

The 2030 myth: existing videos need no retrofit

The 2030 deadline gets attached to existing content over and over. The directive does not say that. Article 2(4) explicitly excludes pre-recorded time-based media published before 28 June 2025 from the scope, and likewise archives that are not updated after that date. The five-year period in Article 32 covers something else: service providers may keep using products lawfully deployed before the cut-off date, and service contracts concluded before 28 June 2025 may run on for five years at most. The German implementation says the same (Section 1(4) and Section 38 BFSG).

In practice that means you do not have to subtitle your reel archive from 2023. But the moment you rework an old video, recut it, republish it or embed it in an updated environment, it stops being existing content and the requirements apply immediately. Anyone running systematic content repurposing is therefore producing fresh obligations out of old material on a rolling basis. That is no argument against repurposing, but it is an argument for writing the subtitle step straight into the repurposing template.

Accessible videos in the production workflow: the four requirements

The table shows where the real leverage sits: three of the four points are template and checklist work, only subtitles cost real time per video. That is exactly why retrofit projects fail and why processes that start at the asset keep running.

Two details decide the quality. First, the difference between subtitles burnt into the image and subtitle files that the platform reads out. Burnt in, you keep full control over typography and timing, but you lose translatability and the option to switch them off. A subtitle file is machine-readable and can be served in several languages, but the platform decides how it looks. For short social videos, combining both is the pragmatic route. Second, positioning: burnt-in subtitles that sit underneath the app's interface elements might as well not be there. Which areas of the frame the platforms cover with buttons, caption and profile name is set out in Reels, Shorts and TikTok specs compared.

Automatic subtitling is now part of the standard video production stack; tools such as OpusClip generate clips and captions in a single pass. The draft is good enough to save you the typing and bad enough to embarrass you if it goes out unchecked. Proper nouns, product names, numbers and umlauts land wrong on a regular basis. Budget one correction pass per video, not one button press.

Alt text: short, factual, complete

Subtitles get all the attention in the accessibility conversation, alt text gets none. Yet alt text has the best ratio of effort to effect, and it is the only part that also applies to pure image posts.

Two things have to be in the description: what the image shows, and every piece of text that appears in the image. The second one gets dropped almost every time, and it is the more expensive mistake. Quote cards, statistics graphics and LinkedIn carousels carry their entire message as pixel text. Without alt text, a post like that is an empty surface with a caption beside it as far as a screen reader is concerned. One or two factual sentences almost always cover it.

What does not belong in there: keyword lists, a repeat of the caption and openers such as "image of". The screen reader announces the element anyway, and a string of search terms helps nobody who depends on the description.

The question of what goes into the alt text on Instagram has the same answer as on every other platform. Only the place in the workflow differs. Where a dedicated alt text field exists, make it a mandatory field in the editorial tool, otherwise everyone publishing under time pressure will skip it. Where none exists, the image information moves into the caption. Carousels and multi-image posts need a separate description per image; one description for the whole set usually only covers the first one.

Why subtitles bring reach regardless of the legal position

The reach effect is older than the legal obligation. Back in 2016, Digiday collected figures from several US publishers indicating that up to 85 per cent of Facebook video views ran without sound. The number is old, platform-specific and based on the publishers' own statements, so it does not work as a current DACH benchmark. Solid recent primary data on the sound-off share is hard to find. None of that changes the mechanism much: someone scrolling the feed with sound off decides within the first seconds, from image and text, whether to stay. A video without subtitles loses that decision more often.

The second effect concerns discoverability. Search functions inside the platforms and generative answer engines read text, not audio tracks. Captions, subtitle text and alt text are therefore the only text surfaces a short video offers at all. Filling them with the terms your audience actually searches for is, in our assessment, the most underrated part of accessibility work. Hashtags contribute less to it than their reputation suggests; Instagram itself recommends three to five per post, and the reach data on the question contradicts itself.

If you carry the same thinking over to your own website, the technical side is covered in Video SEO on-page: VideoObject schema and transcripts. A subtitle file you are producing anyway gets you half the way to the transcript there.

Common mistakes

Most breaches come not from missing knowledge but from the check sitting too late in the process. Five patterns keep repeating.

Subtitles in the UI zone: text that sits behind buttons, captions or the app's progress bar is unreadable. This happens above all when one cut gets cross-posted to several platforms with different safe zones.

Automation without correction: a mistranscribed product name is worse than no subtitle, because it fakes reliability.

Alt text as a keyword field: strings of search terms help nobody who depends on the description, and they devalue the text as a signal. Describe the image and the terminology follows on its own.

Contrast by gut feeling: white type on bright footage fails any test. A text bar, a shadow or a darkened area behind the type solves it at template level for every future asset.

Accessibility as a follow-up project: check only after export and you pay for every correction twice. The checkpoint belongs in the same approval stage as legal labelling, see labelling ads on social media.

Measuring accessibility on social media

No platform hands you a compliance metric. What you can steer is the process, not the result. Three numbers are enough: the share of new videos with checked subtitles, 100 per cent as a rule of thumb; the share of published images with alt text filled in; and the number of assets that come from the back catalogue but have been reworked and therefore count as new content.

Alongside that, a simple before-and-after look at the completion rate of comparable formats is worth the effort. The effect of subtitles is rarely cleanly isolated in organic social, because you lack the stable traffic split for a real test. Large effects still show up, small ones do not. Treat the result as an indication, not as proof.

Document who did the check as well. If a complaint lands, the documented process is what counts, not an assurance offered after the fact.

The cheapest moment is production

Accessibility costs minutes in post-production and weeks after the fact. Write the subtitle line into the video template this week, make the alt text field mandatory in the editorial tool and solve contrast once in the design template, and you have the legal part done with the reach part thrown in. Wait until someone asks or complains, and you pay considerably more for the same result.