Dyslexia Reading Tools for Adults on a Mac: What Actually Helps

If reading is slow or tiring for you, the tools that help do one of four things: read text aloud, make the page bigger and calmer, let you speak instead of type, or turn dense wording into plain words. Your Mac has free versions of most of these built in. Special “dyslexia fonts” have little research behind them, but spacing and your own comfort still matter. Below is what each tool does, where to find it in macOS Tahoe 26, and what the studies actually found.

Dyslexia in Adults, Briefly

The International Dyslexia Association (IDA) revised its definition in 2025. It describes dyslexia as a specific learning disability marked by difficulty reading words and/or spelling, in accuracy, speed, or both. These difficulties range in severity and persist even with teaching that works for the person's peers. The definition notes that well-being and job opportunities can be affected, and that identification and targeted instruction matter at any age.¹

IDA says dyslexia is not due to a lack of intelligence or desire to learn, and that it affects people throughout their lives, though its impact can change over time. It estimates that 15 to 20 percent of people have some symptoms, such as slow or inaccurate reading, poor spelling, or mixing up similar words.²

Many adults were never tested. IDA offers a free adult screener online. It is not a diagnosis. If reading problems are getting in the way at work or school, IDA suggests a formal evaluation with a licensed psychologist.³ The tools below help whether or not you have a diagnosis.

Built-In Mac Tools

These steps are for macOS Tahoe 26. Most settings live in System Settings > Accessibility.

1. Hear any selected text: Speak Selection

Text-to-speech has some research behind it. A 2018 meta-analysis in the Journal of Learning Disabilities found that text-to-speech and read-aloud tools may help students with reading disabilities understand what they read, with a moderate average effect. The authors said more studies are needed.⁴

1. Choose Apple menu > System Settings, then click Accessibility.
2. Click Read & Speak and turn on Speak selection.
3. Select text in any app and press Option-Esc, the default shortcut.⁵

Click the Info button next to Speak selection to change the shortcut and to highlight words, sentences, or both as they are spoken. An onscreen controller lets you change the speaking rate and skip forward or back.⁵

2. A calmer reading view for any app: Accessibility Reader

Accessibility Reader is new in macOS Tahoe.⁶ It shows text from the app you're in as a full-screen view you can restyle and listen to.

1. Go to System Settings > Accessibility > Read & Speak.
2. Turn on Accessibility Reader.
3. In any app, scroll to what you want to read and press Command-Esc, the default shortcut.⁷

From its customization menu you can change the theme, text and background colors, font, size, line, word and character spacing, and text width. It also has a High Legibility Characters option. Playback controls read the text aloud with adjustable speed, and you can turn on Autoplay in Reader.⁷

3. Strip the clutter from web articles: Safari Reader

1. Open an article in Safari.
2. Click the page menu button in the Smart Search field and choose Show Reader. It only appears when Safari detects an article.
3. In Reader, click the Reader button to change the background, font, and zoom. Press Esc to leave.⁸

4. Bigger text and stronger contrast

• Text size: System Settings > Accessibility > Display, then Text size. The slider changes text on the desktop, in sidebars, and in apps set to use your preferred size. In many apps, Command-Plus enlarges text. In Safari, Option-Command-Plus zooms the whole page.⁹
• Contrast: the same Display pane has Increase contrast, Reduce transparency, and Color filters, which include a tint option.¹⁰

5. Magnify one line at a time: Hover Text

Turn it on in System Settings > Accessibility > Hover Text. Then point at text and hold Command to see a large version in its own window. You can change the text size, font, and colors.¹¹

6. Speak instead of type: Dictation

1. Go to System Settings > Keyboard, find Dictation, and turn it on.
2. Start it with the Microphone key if your keyboard has one, your Dictation shortcut, or Edit > Start Dictation. Press Esc to stop.¹²

Apple says Keyboard settings tell you whether your dictation is processed on your device rather than sent to its servers.¹²

7. Get text out of photos and scans: Live Text

Open an image in Preview, hold the pointer over the text, and drag to select it. Control-click and choose Copy Text, then paste it where Speak Selection can read it. Live Text isn't available in every region or language.¹³

8. Spelling checks and shorter versions: Writing Tools

Select text, Control-click, and choose Show Writing Tools. Proofread checks grammar and spelling. Rewrite, Friendly, Professional, and Concise change your wording. Summary, Key Points, List, and Table reorganize text you're reading.¹⁴ It needs Apple Intelligence, which requires a Mac with Apple silicon, macOS Sequoia 15.1 or later, and 7 GB of free storage.¹⁵

What the Research Says About Fonts, Spacing, and Color

“Dyslexia fonts”

Studies of fonts designed for dyslexia have not found the promised benefit:

• OpenDyslexic. In an eye-tracking study of 48 people with dyslexia aged 11 to 50, OpenDyslexic didn't make reading faster or slower. Participants rated it lower than Verdana and Helvetica. Sans serif, monospaced, and non-italic fonts did better, and italics did worse.¹⁷ A small study of students aged 9 to 12 also found no gain in rate or accuracy, and no student preferred it.¹⁸
• Dyslexie. Two experiments with children aged 7 to 12 found no difference from Arial in speed or accuracy. The authors noted it does no harm if someone likes it.¹⁹

Most of these studies involved children, so the results for adults are less certain.

Spacing

Spacing has more evidence than letter shapes. One study found that Dyslexie's small speed gain came from its wider spacing: Arial with the same spacing did just as well.²⁰ In a study of 94 Italian and French children with dyslexia, extra-large letter spacing improved reading speed and accuracy with no training.²¹

The effect varies by person. A 2018 study found that a subgroup of people with dyslexia who are especially affected by crowding (letters interfering with each other) read faster with wider letter, word, and line spacing.²² In fluent adult readers without dyslexia, wider letter spacing lowered reading speed, most of all for fast readers.²³

Bold word beginnings and colored tints

A 2024 study found no difference in reading times between “Bionic Reading” (bolding the first part of each word) and normal text.²⁴ A joint statement from the American Academy of Pediatrics and eye-care groups says the evidence does not support tinted filters or lenses as treatments, and that vision problems don't cause dyslexia.²⁵

Third-Party Tools Worth Knowing

• NaturalReader (text to speech). The desktop software reads PDFs, Word files, and ePub, and a Miniboard reads text from other apps. There's a free version, and paid desktop versions are one-time purchases starting at $99.50. NaturalReader Online is sold separately as a subscription.²⁶
• Speechify (text to speech and voice typing). It has a free plan with a small set of voices, and Premium costs $29 a month or less if billed yearly.²⁷ Its privacy policy says content you save in its software is stored on your device and synced with its servers in the United States.²⁸
• Grammarly (spelling, grammar, rewrites). It has a free plan, and Pro is listed at $12 a month.²⁹ Your text is processed in Grammarly's cloud. It may use de-identified samples of user content to improve its service unless you opt out.³⁰
• Read&Write for Work (text to speech, dictation, screen masking, summaries). It runs on Mac and costs $300 a year for an individual. Most features need internet access, though some work offline on the desktop.³¹
• AI chatbots such as ChatGPT or Claude can explain a paragraph in simpler words. They upload what you paste. Our guide to summarizing a PDF on a Mac without uploading it compares their privacy settings.

Cloud tools are fine for a news article. For a medical letter, a pay slip, or a work contract, check where the text goes first.

Strategies for Hard Documents

1. Listen while you read. Turn on word highlighting in Speak Selection or Accessibility Reader so your eyes and ears stay together.
2. Take one section at a time. Read the payment section, stop, then move on. A long letter feels smaller in pieces.
3. Ask what it commits you to. What do I have to do? By when? What happens if I don't? Those three questions cover most bills, leases, and forms.
4. Check dates and numbers against the original. Text-to-speech, scanned text, and AI tools can all misread a figure or drop a “not.”
5. Write your reply by voice, then listen to it. Dictate a draft, then have your Mac read it back before you send it.
6. Get help for the big ones. For a contract or tax notice with real consequences, use these tools to prepare questions for a professional.

Where Hey Eduardo Fits

Hey Eduardo is a Mac menu-bar app we make for this kind of reading. Highlight text in any app and press ⌥⇧E for Explain in plain words. A panel appears over your work and rewrites the text in words a ten-year-old would know, says why it matters, and lists every hard word with a plain meaning. With nothing selected, you can drag a box over the screen instead. If the answer is still too dense, click Simpler in the panel footer for a version at a lower reading level. ⌥⇧S gives a summary, and specialist words in it get a dotted underline you can click for a one-sentence explanation.

Press ⌥⇧A to ask a question, or hold the microphone and say it. Your speech is transcribed on the Mac and the recording is deleted straight after. Eduardo fills in the question box rather than sending, so you can fix a misheard word. Follow-up questions remember the conversation. Listen reads the answer aloud in a bundled voice or any macOS system voice. The “What should I watch out for?” preset lists what a document commits you to and what expires, based only on what the text says. It isn't legal, tax, or financial advice.

Settings > Reading has three panel styles with a live preview, six background tints, and controls for font, size, line spacing, and letter spacing, plus an optional bionic-style bold. None are on by default, because what helps is individual. Local mode is the default: the model runs on your Mac and nothing you capture is sent to us or any AI company.

The limits: it works on text you highlight, capture, or open. It doesn't read whole books or web pages aloud, it isn't a screen reader, and it isn't a learning or diagnostic tool. It needs an Apple Silicon Mac with macOS 15 or later and is a one-time purchase from $49 with a 14-day money-back guarantee. See every shortcut in the guide, or download it here.

Related: Hey Eduardo home, the Hey Eduardo guide, and how to summarize a PDF on a Mac without uploading it.