Choose how text looks

OpenDyslexic and OpenDyslexic Alta Free
Dyslexia-friendly fonts on every website.
1,900+ Google Fonts Pro
Every family in the Google Fonts library, sorted by category.
Curated readable fonts Pro
Atkinson Hyperlegible, Lexia Readable, Fast Font and more.
System fonts Pro
San Francisco, Verdana, Arial and the other fonts built into your device.
Your own fonts Pro
Import a font file and use it everywhere.
Fallback font Pro
A second choice for sites that block outside fonts.

Size and spacing

Give words room

Minimum text size Free
Text smaller than your chosen size grows to match. Bigger headings are left alone.
Line height Pro
Add space between lines so your eyes find the next one easily.
Letter spacing Pro
Loosen tight text so letters stop crowding.
Font weight Pro
Make thin text heavier, or tone bold text down.
Text decoration controls Pro
Force or remove bold, italic and underline.
TextVide mode Pro
Bold the start of each word to guide your eyes along a line.

Colors

Text color Pro
Pick a text color with enough contrast for you.
Background color Pro
Cream, grey or pastel backgrounds cut glare from white pages.
Dark mode colors Pro
Separate colors for when your device is in dark mode.
Scroll progress bar Pro
A thin bar shows how far through a page you are.

Control

Profiles Free
Save different setups and assign them to websites, including every subdomain of a site.
Exclude a website Free
Turn FontFlex off for any site from the Safari toolbar.
Studio live preview Free
Every setting on one screen, with sample text that changes as you drag.
iCloud sync Free
Fonts, colors and profiles match on iPhone, iPad and Mac.
Keyboard shortcuts
Switch profiles and toggle FontFlex without leaving the page.
Family Sharing Pro
One Pro subscription covers your family group.

With a keyboard connected to iPad or Mac:

Shortcut	What it does
`Ctrl` + `Shift` + `P`	Turn FontFlex off or on for this website
`Ctrl` + `Shift` + `K`	Next profile
`Ctrl` + `Shift` + `J`	Previous profile
`Ctrl` + `Shift` + `B`	Toggle TextVide mode

Free to download. OpenDyslexic and text size are free, with no time limit. Upgrade to Pro only if you want more.