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Reading YouTube with dyslexia
YouTube is primarily a video platform, but the reading load it hands you is substantial: captions running in real time, a dense auto-generated transcript panel, descriptions that can run to several paragraphs, and a comment section with no paragraph breaks. Most of that text is rendered in YouTube's own default font at whatever size Google chose. This guide covers every layer of YouTube text - what you can change inside YouTube's own settings, what a browser font extension adds on top, and how to get useful content from the transcript panel without the visual overload.
The short answer
Open the captions settings panel (the gear icon on any video with CC enabled) and increase the caption font to 200-300%, switch the font to a rounded or high-legibility face, and reduce the background opacity so the overlay feels less heavy. Turn on captions by default in Settings -> Playback and performance -> Always show captions. For the transcript panel, use it via the three-dot menu under the video and open it as a side panel rather than inline. Install a font-override extension to apply a dyslexia-friendly face to descriptions and comments. Slow the playback to 0.75x if your caption-reading speed needs it.
The rest of this article walks through each of those steps in detail, explains why YouTube's default caption experience is harder than it needs to be, and covers the mobile app separately.
Why YouTube is harder than it looks for dyslexic readers
At first glance, YouTube is not a reading platform. In practice it is. Consider a typical session: you watch a video with auto-generated captions, check the description for links or timestamps, scroll through a few top comments, and follow a related article link. That is several hundred words of prose scattered across four different visual contexts - none of which is formatted with readability in mind.
The specific pain points for dyslexic readers are worth naming individually, because each has a different fix.
Auto-generated captions are unpunctuated and unsegmented. YouTube's speech-to-text engine is accurate on well-spoken content, but it produces a stream of lower-case words with minimal punctuation and no paragraph breaks. The result is visually similar to a run-on sentence that wraps every few seconds. For readers who rely on sentence structure to predict where words end, this is genuinely difficult to parse - not because the words are wrong, but because the visual cues that signal sentence boundaries are absent.
The caption overlay reflows constantly. Unlike static text, captions move. Each new line replaces the previous one at a timing that matches the speaker's pace, which is often faster than the comfortable reading speed for a dyslexic adult. The reader's eye has just found its place when the line changes. See our piece on dyslexia and eye tracking for why this loss-of-place effect is especially costly for some readers.
The transcript panel is visually dense. YouTube's transcript is the full text of a video's captions with timestamps, rendered as a vertical scroll of short fragments, each on its own line with a timestamp to its left. There is no paragraph structure, no heading hierarchy, no way to know where a new topic begins. On a thirty-minute video the transcript panel can contain three thousand words in this format.
Descriptions are long and unformatted. YouTube descriptions frequently contain multiple paragraphs, bullet points rendered as plain text with em dashes, chapter markers, links, affiliate disclaimers, and social media handles - all in one block. YouTube's UI renders descriptions in a small font with a "Show more" truncation that requires a click to expand. The expanded text sits beneath the video in a narrow column.
Comments have no formatting at all. The comment section uses YouTube's own font, at a small size, with no visual separation between a two-sentence comment and a four-paragraph reply. Long comment threads feel like reading a forum with no CSS.
Step 1 - configure YouTube's own caption settings
YouTube has a caption customisation panel that most users have never opened. On any video, enable captions (press C or click the CC button), then click the gear icon in the bottom-right of the player and choose Subtitles/CC -> Options. This opens a panel with six controls: Font family, Font colour, Font size, Background colour, Background opacity, and Window colour.
The default caption size is 100%. At 1080p on a laptop screen this is around 18-20px - readable but not comfortable for fast-moving text. Set it to 200% as a starting point; on a 15-inch laptop at standard viewing distance, this gives you approximately 36-40px captions. For many dyslexic readers this is the single most effective change in this entire guide. The captions start to feel like a subtitle you can track rather than a timer you are racing. See our font size guide for dyslexic adults for the principles behind that recommendation.
YouTube's caption font menu offers seven options: Default, Monospaced serif, Proportional serif, Monospaced sans-serif, Proportional sans-serif, Casual, and Small caps. "Casual" - which YouTube renders as a rounded, informal sans-serif - turns out to be one of the easier caption faces for dyslexic readers. It has open apertures, distinct letterforms, and heavier strokes than the default proportional sans. "Proportional sans-serif" is a reasonable second choice. Avoid "Monospaced serif" and "Small caps" - both are harder to parse at speed.
The default caption background is a solid black box behind each line. That contrast is intentional - it makes captions readable against bright or complex video backgrounds. But the solid box cuts off the video content behind it, and the hard edge creates a visual interruption every time the caption reflows. Set the background opacity to 50-75%. You keep enough contrast for readability but lose the heavy block feel. If you prefer caption text directly on the video with no background, test it on a few videos first - it only works reliably on content with relatively calm, low-contrast backgrounds.
The "Window" option adds a tinted panel behind the entire caption region rather than just behind the text. Set to a warm off-white or light yellow at low opacity, this creates a reading surface that is more stable than a floating overlay and gentler on the eye than a black box. This is essentially applying the same principle as background colour adjustment for dyslexia to the caption layer. Not everyone needs it - try it and decide.
These settings are saved per browser profile, so you only need to do this once. YouTube applies your caption preferences across every video.
Larger captions mean fewer words per line, which actually helps: the constant-reflow problem is reduced because each new line contains a smaller chunk of text, and your eye has less horizontal distance to scan.
Step 2 - always-on captions and auto-translate
YouTube's default behaviour is to show captions only when you press CC. For dyslexic readers who use captions as a reading anchor, it is worth making them permanent. Go to youtube.com -> your account avatar -> Settings -> Playback and performance and enable Always show captions. This applies globally - captions appear on every video you watch, including ones where no human-authored captions exist, so YouTube falls back to auto-generated.
Auto-generated captions in English are accurate enough to be useful on most well-recorded content. They struggle with accents, technical vocabulary, proper nouns, and fast speech. For content where accuracy matters - a lecture, a tutorial, a news segment - the transcript panel (step 3 below) lets you read ahead at your own pace rather than racing the speaker.
If you watch non-English content, YouTube's auto-translate feature is available in the same CC menu. The translation quality varies but is generally more accurate than it was even two years ago. Use translated captions as a scaffold rather than a verbatim record.
Step 3 - using the transcript panel
The transcript panel is YouTube's least-known accessibility feature. On most videos (those with captions enabled), click the three-dot menu beneath the video and choose Open transcript. A side panel opens showing the full caption text with timestamps. You can click any line to jump to that point in the video.
The transcript is useful in two distinct ways for dyslexic readers. First, it lets you read ahead. If you find yourself reading captions at speaker pace and losing the thread, open the transcript before the video starts, scroll a paragraph ahead, and use it as a preview of what is coming. When you hear a word you have already read, you find your place immediately instead of having to parse it in real time. Second, it is the only way to get the full text of a long video in a scrollable, static form - useful if you want to search for a specific term or skim to a relevant section without scrubbing the timeline.
The transcript's main problem is density. Every fragment is on its own line, with a timestamp to the left that your eye treats as a column of numbers to skip. There is no way to reformat it inside YouTube's own UI. The practical workaround is to select all the transcript text, paste it into a Google Doc or a blank text file, and read it there - where your font extension applies, where you can adjust line spacing, and where the timestamp column disappears. This adds thirty seconds of setup but makes a thirty-minute lecture into a properly formatted document. See our dyslexia-friendly Google Docs setup for how to configure that reading environment once and have it ready to paste into.
Step 4 - a font layer for descriptions and comments
YouTube's captions can be adjusted inside the player, but descriptions and comments use YouTube's UI font (Roboto, approximately 14px) at a size and line-height that Google has chosen for density rather than legibility. A browser font-override extension changes every word of prose on the page to whatever face you choose.
LexiFont is free for OpenDyslexic and applies it with one click; LexiFont Pro unlocks Lexend and Atkinson Hyperlegible for a one-time $14.99 if OpenDyslexic's weighted-bottom letterforms are not to your taste. Atkinson Hyperlegible is a particularly good choice for YouTube descriptions because its disambiguated letterforms (the 1/l/I distinction is especially strong) hold up at the small sizes YouTube uses.
The font extension does not affect captions - those are rendered inside the video player itself, in a separate layer that browser CSS cannot reach. The caption settings in step 1 are the only way to change the caption face. The extension applies to everything outside the player: the title, the description, the chapter list, the comments, the sidebar recommendations, and the channel header.
In this video I walk through how the new routing system works, cover the three most common migration errors people hit when upgrading from v2 to v3, and share the one config change that fixes 80% of them. Timestamps: 0:00 Intro, 2:14 What changed in v3, 8:40 Migration errors, 19:22 The config fix, 24:00 Q&A
In this video I walk through how the new routing system works, cover the three most common migration errors people hit when upgrading from v2 to v3, and share the one config change that fixes 80% of them. Timestamps: 0:00 Intro, 2:14 What changed in v3, 8:40 Migration errors, 19:22 The config fix, 24:00 Q&A
The comment section particularly benefits from a font change. Comments are full sentences, often written quickly, with inconsistent punctuation and mixed casing - the kind of informal prose that dyslexic readers find harder to parse than edited writing. A more legible font does not clean up the grammar, but it removes the typographic friction on top.
If YouTube's comments are a major part of why you use the platform (community discussion around a channel you follow, for example), you may also find it helps to use YouTube's own Sort by: Top comments default rather than switching to Newest first. Top comments tend to be longer, more carefully written, and punctuated more consistently - a better reading surface than a stream of one-liners sorted by timestamp. This is the same logic as reading Reddit with dyslexia by sorting threads by Top rather than New.
Step 5 - playback speed and caption-reading pace
YouTube lets you set playback speed from 0.25x to 2x. Most people know this and use it to speed things up. Fewer people slow it down deliberately as a caption-reading aid.
If you find yourself re-reading captions because a line changed before you finished, 0.75x is worth trying for dense or fast-spoken content. The audio pitch correction in YouTube's player is good enough that 0.75x does not sound unnaturally slow - it sounds like the speaker is taking their time. The captions stay on screen 25% longer per line, which at the reading speeds typical of dyslexic adults can mean the difference between catching a line and missing it.
The keyboard shortcut for speed is: hold Shift and press < to slow down or > to speed up. You can also set a persistent default: go to your YouTube account settings, then Playback and performance, and set your preferred default speed.
A related technique is to pause frequently. This sounds obvious but most caption-readers feel social pressure not to pause - the speaker will "get ahead". In a recorded video there is no speaker to keep up with. Pausing, reading the caption at rest, and then unpausing is a completely valid reading strategy that removes the time pressure entirely.
Step 6 - YouTube on mobile
The YouTube app on iOS and Android has caption settings under Account -> Settings -> Captions. The options are more limited than the web version - you can adjust font size (small, medium, large, very large) and high contrast mode, but you cannot choose a specific font family or adjust background opacity. The mobile app is a weaker reading environment than the browser version for this reason.
Three things still help on mobile. First, use the system text-size setting - YouTube's app respects iOS Dynamic Type and Android font scaling, so increasing the system font size does make captions and UI text larger. See our guide to reading on mobile with dyslexia for how to set this on both platforms. Second, turn captions on in the app settings so they default to on for every video. Third, for long-form content that you want to follow carefully, consider watching it on desktop instead - you get the full caption controls, the transcript panel, and your font extension all at once.
YouTube's browser version also works well on mobile in Chrome, and if you open it at youtube.com in Chrome rather than the native app, your LexiFont font settings carry over - comments and descriptions appear in your chosen face on mobile too.
Accessibility features YouTube does not have (yet)
It is worth being clear about what YouTube's own settings cannot do, so you do not spend time looking for options that are not there.
YouTube does not let you choose a specific font family for captions beyond the seven broad categories described in step 1. You cannot use OpenDyslexic or Atkinson Hyperlegible as a caption face - those choices are not in the menu. The "Casual" option is the closest to a high-legibility sans-serif that the platform currently offers.
YouTube's auto-generated captions cannot be edited by viewers. If the captions on a video are systematically inaccurate - a common problem with technical content, non-standard accents, or quiet recording conditions - there is no way to correct them from your end. You can flag the issue to the content creator, but the transcript you see is the transcript you get. Using the transcript-to-Google-Docs technique from step 3 and correcting it yourself is the only workaround if the content is important enough to warrant it.
YouTube does not have a reader mode equivalent that strips the page to text. The closest you can get is the transcript panel, which gives you the video's verbal content as plain text, plus a font extension for the surrounding page.
Common mistakes
- Leaving captions at 100% because it feels like the default is fine. The default caption size was chosen for wide audiences watching on large screens. On a laptop at desk distance, 100% is genuinely small. Try 200% for one week and see if caption-reading fatigue drops.
- Relying on auto-captions as a verbatim record for important content. Auto-generated captions are useful as a reading aid and a first-pass transcript, but they contain errors - especially on technical vocabulary, names, and compound sentences with subordinate clauses. For anything you need to quote, check against the audio.
- Opening the transcript panel, finding it dense, and closing it. The transcript panel is genuinely harder to read than the captions because it is unparagraphed. The workaround is to paste it into a formatted document rather than trying to read it in the panel itself.
- Trying to install a font extension on the YouTube app. Browser extensions do not run in native apps. The font extension works on youtube.com in Chrome. For the native iOS or Android app, the only typographic controls are in the app's own caption settings.
- Reading the comment section without sorting it. YouTube defaults to top comments, but if you switch to "Newest first" and forget to switch back, you end up reading one-line reactions in chronological order - the densest, least-formatted reading surface on the site. Stick with top comments.
A complete YouTube reading setup
Putting it all together, a dyslexia-friendly YouTube setup looks like this. Open any video, click the gear icon, go to Subtitles/CC -> Options, and set font size to 200%, font family to Casual, and background opacity to 50-75%. Go to Account -> Settings -> Playback and performance and enable Always show captions. Install LexiFont and pick your preferred face for the surrounding page; LexiFont Pro adds Lexend and Atkinson Hyperlegible alongside the free OpenDyslexic. For dense long-form content, open the transcript via the three-dot menu, paste it into a Google Doc, and read it in your own time. On mobile, rely on system text scaling and consider using youtube.com in Chrome rather than the native app if the font extension matters to you.
Setup time is around fifteen minutes. The caption and font changes persist across every subsequent video. The transcript technique adds a short step per video but repays itself quickly on any content that runs longer than twenty minutes.
Get LexiFont Pro - Lexend, Atkinson Hyperlegible, and Comic Neue for $14.99 one-time
Further reading
- Reading Reddit with dyslexia - comment threads, long posts and font settings
- Reading Substack with dyslexia - newsletters made readable
- Dyslexia and eye tracking - why some readers lose their place
- Best font size for dyslexic adults - what the research says
- Reading on mobile with dyslexia - iOS and Android settings that help