Accessibility

Invisible Network aims to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA, and the clauses on video players and on subtitles and audio description of the European standard EN 301 549 (version 4.1.1, 2026). The site meets them in part: what it provides is below, and so is what does not work yet. Every title's card and page says which access services that title has.

Cards and title pages carry these labels, and say what they mean to screen readers:

CC Closed captions: subtitles people wrote that also name the sounds, such as [dog barking], with the number of languages subtitled (CC 25 is 25 languages, some with the sounds named).
Subtitles Subtitles of what is said only, or transcribed by machine. Machine transcriptions are marked as such on the badge, in the player's subtitle menu (“machine transcription”) and on the transcript.
AD Audio description: what the picture shows, told in the pauses of the soundtrack, for viewers who cannot see it.
Transcript A transcript: everything heard, as text, each line linking to its moment. Where the title also has an audio description, its descriptions are in the transcript too, so the page is the whole film in words, for reading on a braille display.

With audio description:

Big Buck Bunny (English)
Spring (English)

The library can show only titles with audio description, or with subtitles in a language you choose: titles with audio description. The same facts are in each title page's structured data (schema.org accessibilityFeature, accessMode and accessModeSufficient), for search engines and apps that look for them.

Using the player

The player's buttons have names a screen reader announces. Select the player (or move to it with Tab) and these keys work:

The settings button opens a menu of subtitles, audio description, quality and speed. Move through it with the arrow keys, choose with Enter, and close it with Escape; focus goes back to the button.

Subtitles

Choose a language under Subtitles in the settings menu, or press c. The site remembers your choice on this device and picks your browser's language where a title has it. Where no subtitles are in your language and your browser can translate on the device (Chrome's built-in translator), the menu also offers a translation, made on your device and marked as such.

Audio description

On a title marked AD, choose a language under Audio description in the settings menu, or press d. Under Description style:

Spoken: your device reads each description aloud with its own speech voice, in the description's language, and the film's sound is lowered while it speaks.
Extended: pause the film to finish: when a description is longer than the pause it was written for, the film waits for it and then goes on by itself.
As text, for screen readers and braille: each description appears at the top of the picture, in a live region that a screen reader announces and a braille display shows. This is also what you get in a browser that cannot speak.

Your choices are remembered on this device. Descriptions are written so as never to cover a line of dialogue or a sound the subtitles name.

Caption style

Under Caption style in the settings menu, or in Settings with a preview: the size of captions (50% to 200%), their colour and opacity, the font, the edges around the letters, and the colour and opacity of their background and window. Your device's uses the caption style set in your device's accessibility settings instead, where the browser applies it (Safari does, and is set to it unless you choose otherwise). Settings says when a combination is hard to read.

Chapters

Films with chapters list them under the player, as links that start the film there. In the player, Chapters comes first in the settings menu: it names the chapter playing, and Enter opens the list of all of them, which the arrow keys move through like the rest of the menu (Back returns to the settings). A headset's or keyboard's next and previous buttons move between chapters, and the transcript is divided by them.

Everywhere else

A Skip to main content link comes first on every page.
Light and dark themes; the site follows your device unless you choose. Text colours are chosen to meet the WCAG contrast minimum in both, and the site's tests check every pair.
Animations are reduced when your device asks for less motion.
The site's tests check its pages with the axe-core accessibility engine in both themes. That catches what a machine can; it does not replace testing by people who use assistive technology, which has not been done yet.

Few titles have audio description so far. Each is written with AI assistance: by Claude (Anthropic), from frames of the film, and timed to it; more will come a title at a time.
Of the 25 titles with subtitles, 16 have only machine transcriptions (Whisper), not checked by a person, which will have mistakes. Subtitles written by people, such as those from Wikimedia Commons contributors, are credited on the title's page.
Descriptions are spoken by your device's speech voice, not a narrator; how it sounds depends on your device. Our descriptions are written with AI assistance and credited on each title's page.
Browsers speak only after you have interacted with the page. If a film starts by itself from a link, the first descriptions may appear as text until you press a key or select something.
On iPhone and iPad the browser does not let a page lower a video's sound, so descriptions are spoken over it. Extended or As text help there.
As text, descriptions keep to the film's own time: they do not pause it while you read.
There is no sign language interpretation, and the live channels have no audio description. They have captions where the broadcaster's stream carries them, and each channel's page says whether its stream carried any when it was last checked.
The films have not been tested for flashing; their structured data says so ("unknown") rather than claim they are safe. 360° films move the picture around you, and say so too.
The games, the 3D campus and the virtual reality viewer have not yet been reviewed against WCAG. Radio stations and books come from other sites, which are responsible for their own players and text.

Report a problem

If something on the site does not work with your assistive technology, a title's subtitles or description are wrong, or a label is missing, tell us here. The form asks nothing about you, so we cannot write back to it; please leave out personal details. To hear back, write to david@voyagetracable.com instead. What happens to a report is on the privacy page.

For captions that are missing, wrong or will not show, write to the person responsible for captioning, who can answer you.