Newsletter readers
Make Substack easier to read
FontFlex is a Safari extension that changes the font, size, spacing and colors of substack.com, and every other site, on iPhone, iPad and Mac.
Why Substack can be tiring to read
Each Substack newsletter picks its own fonts and colors, so your reading experience changes from one writer to the next.
A good FontFlex setup for Substack
- One reading font for every newsletter Pro
- Text size one or two steps larger Free
- Line height around 1.6 Pro
Only for Substack, if you like
Save these settings as a FontFlex profile and assign it to substack.com. Substack gets its own look while every other site keeps your default. Profiles are free.
New to FontFlex? The setup guide shows how to turn the extension on in Safari. It takes about a minute.
FontFlex is not affiliated with Substack. It changes how pages look on your device only.
The quiet cost of hard-to-read pages
Small, thin type and tight lines make readers work harder. Many give up halfway down the page, and the words were never the problem.
The quiet cost of hard-to-read pages
Small, thin type and tight lines make readers work harder. Many give up halfway down the page, and the words were never the problem.
More sites people read with FontFlex
Read Substack your way
Free to download. OpenDyslexic and text size are free, with no time limit. Upgrade to Pro only if you want more.