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How to change text size and spacing on Android

4 minute read · updated October 28, 2026

7 sources: 2 peer-reviewed research, 5 product documentation

Open Settings, search for Font size, and drag the slider; search for Display size to enlarge everything else. Bold text is under Accessibility > Display size and text. For line spacing and fonts in long articles, Google offers a separate Reading mode app with Display settings for font type, size and line space.

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Android has two separate size controls. Font size changes text, and Display size changes how large everything on the screen appears, including icons. Google notes that some of these steps work only on Android 13 and up.[1] Google's text and display page does not list line or letter spacing, so this page also covers the tools that do offer them.

Change font size and display size

Make text larger on Android

  1. Open the Settings app.
  2. Search for and select Font size, then move the slider left or right.[1]
  3. Search for and select Display size, then move that slider if you want buttons and icons larger too.
  4. Check the preview. If you do not like it, tap Reset settings to return to the original sizes.[1]

Google says that once you change the font size in Settings, a Font Size tile is added to Quick Settings. Open Quick Settings and tap that tile to change the size quickly, up to 200%.[1]

Turn on bold or outline text

  1. Open Settings and tap Accessibility > Display size and text.[1]
  2. Turn on Bold text.
  3. On Android 16 and up, you can also turn on Outline text. On Android 15 and below, Google suggests high-contrast text instead.[1]

Zoom web pages in Chrome

Use Page Zoom in Chrome for Android

  1. Open Chrome and go to the page.
  2. Tap More > Zoom, then use the slider to zoom in or out.[3]
  3. To show the zoom control on every page, go to Chrome Settings > Accessibility and turn on Show Zoom.[3]

Change line spacing and font with Reading mode

Google's Reading mode is a separate app from the Play Store that shows long articles in a simplified view. Google lists Android 9 or later as the minimum and says it is currently available only on Android phones.[4]

Install and set up Reading mode

  1. Open the Google Play Store, search for "Reading mode," select the Reading mode app, and tap Install.[4]
  2. Open the app and follow the tutorial, which sends you to Accessibility settings.
  3. Tap Reading mode, turn on Reading mode shortcut, and tap Allow to grant permissions.[4]
  4. On a page with long text, tap the floating button to open Reading mode.
  5. At the bottom left, tap Settings, then Display for font type, font size, bold, line space and color theme. Tap Audio for reading voice and speed.[4]

For books, the Kindle app has its own spacing controls for lines, paragraphs, words and characters; see Kindle text to speech and display settings.[5]

Troubleshooting

  • Text is cut off after you enlarge it. Google's developer guidance says this can happen when an app's layout is too tightly fixed.[2] Try a slightly smaller font size, or use Display size instead.
  • Reading mode will not open on a page. Google says it does not currently support PDF files, emails, chat messages or social media feeds.[4]
  • Reading mode does not read aloud. Install or update Speech Services by Google from Google Play.[4]
  • Voice Access or Switch Access stops working with Reading mode. Google says to turn them off and on again if they were on before Reading mode.[4]

Quick answers

How big can text get on Android?

Google says the Font Size tile in Quick Settings goes up to 200%.[1]

Can I change line spacing on Android?

Google's text and display settings page does not list a line spacing option. Google's Reading mode app has a line space setting under Settings > Display.[4]

How do I undo text size changes on Android?

In the Font size or Display size settings, tap Reset settings to return to the original sizes.[1]

Review status

Source-checked, not expert-reviewed

Drafted with AI assistance. Each factual claim was checked against the source it links to on 2026-10-28. No clinician, psychologist or dyslexia specialist has reviewed this page. See the claims register.

Sources

  1. [1]Change text & display settings (Android Accessibility Help). Google Accessibility Help. Accessed 2026-10-28. Product documentation
  2. [2]Text scaling (Accessibility Scanner guidance). Google Accessibility Help. Accessed 2026-10-28. Product documentation
  3. [3]Use Page Zoom for Chrome on Android. Google Accessibility Help. Accessed 2026-10-28. Product documentation
  4. [4]Get started with Reading mode on Android. Google Accessibility Help. Accessed 2026-10-28. Product documentation
  5. [5]Accessible Reading Options for Kindle Reading Apps. Amazon Customer Service. Accessed 2026-10-28. Product documentation
  6. [6]The effect of a specialized dyslexia font, OpenDyslexic, on reading rate and accuracy. Wery JJ, Diliberto JA. Annals of Dyslexia 67(2):114-127. doi:10.1007/s11881-016-0127-1, 2017. Accessed 2026-10-28. Peer-reviewed research
  7. [7]Dyslexie font does not benefit reading in children with or without dyslexia. Kuster SM, van Weerdenburg M, Gompel M, Bosman AMT. Annals of Dyslexia 68(1):25-42. doi:10.1007/s11881-017-0154-6, 2018. Accessed 2026-10-28. Peer-reviewed research

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