Local testing

🐸 This guide will help user to test their font locally to confirm quality-assurance. We recommend to test your font on the latest stable version of your OS and apps.

Bear in mind:
Background reading:
must→ Static fonts specifics
must→ Variable fonts specifics

Table of contents

Apple macOS


Usage in external office apps

MS Word, Powerpoint, LibreOffice Writer, LibreOffice Impress…

Usage in external layout apps

InDesign, Illustrator, Photoshop (Sketch, Figma, Affinity, CorelDRAW…)

Variable Fonts

Usage in native apps

TextEdit / Pages…

Remember to remove fonts from the user fonts folder at the end of testing.

Microsoft Windows


Double-click on each style and check if:

Usage in Office apps

MS Word, Powerpoint, LibreOffice Writer, LibreOffice Impress…

Web Browsers

Chrome, Firefox, Safari, Edge…

All web formats

Variable Fonts


If your fonts of different formats have the same naming, you will have to test formats one by one, restarting the computer between each to avoid cache issues and conflicts. If they have a different naming system, eg. NameCFF.otf, NameTT.ttf, NameVF.ttf, test their compatibility when installed on the same machine.

TrueType Hinting

Manual hinting is often applied from 8ppm to 21ppm. Overshoot suppression until 48-51ppm.

How to prepare hinted rendering to review:

What to check:

Testing apps:
Further reading:
learn Diacritics
learn Outlines quality