What is a WOFF file?

The WOFF format in brief: what it is, what it is used for, and how to convert it.

WOFF: conversion steps

  1. Upload your WOFF file to start.
  2. Convert WOFF to OTF.
  3. Download the WOFF file.

About WOFF files

the compressed web font format

WOFF (Web Open Font Format) is a W3C wrapper that compresses a TrueType or OpenType font for use on websites.

Web fonts loaded with CSS @font-face; all current browsers support it.

WOFF: what conversion changes

Converting WOFF rewrites outlines.

WOFF: settings to change

Before you convert WOFF files, you can adjust: Subset unicode ranges, Keep hinting, and Keep layout features.

Limits of the WOFF format

WOFF2 compresses better, so WOFF is now mainly a fallback for old browsers.

Common questions about WOFF

Why can't I install a WOFF font for Word or Photoshop? WOFF was built for web pages only, and desktop apps won't install it — converting to TTF or OTF makes the font usable everywhere.

Why convert a font to WOFF? For older browser support: it compresses the font and carries embedding permissions, and legacy sites still expect it.

Convert WOFF files

Guides and tools for WOFF