01
ADD YOUR OTF
Drop the OTF file into the box above or choose it from your device.
OTF → WOFF / online converter
OTF to WOFF Converter
Package an OpenType font as WOFF for use in a website's @font-face rule. The font data is compressed, not changed.
01 / how to
How to convert OTF to WOFF
02
CONVERT TO WOFF
WOFF is already selected. Press Convert and wait a few seconds.
03
DOWNLOAD
Save the finished WOFF file. The original is deleted from our server.
02 / what you get
What happens to your data
Kept
- Everything in the font: glyphs, kerning, ligatures, alternates and hinting, because only the packaging changes
- The original PostScript (CFF) outlines stay as they are, with no redrawing
- A smaller file, typically 30–50% smaller than the OTF
Good to know
- WOFF is the older web format. If you only target modern browsers, WOFF2 compresses further.
- Converting a font does not change its license. Make sure the license allows web embedding or modification before you publish the result.
- Files up to 4 MB are supported, which covers most Latin, Cyrillic and Greek fonts but not large CJK fonts.
03 / formats
OTF vs WOFF
OTF
An OTF (OpenType Font) file is a newer, more advanced font format that supports richer typography features — ligatures, alternate glyphs, and multi-language support. Most modern professional fonts are distributed as OTF.
Used in: Modern type foundries · Professional design tools · Multi-language typography
WOFF
A WOFF (Web Open Font Format) file is a compressed font format built specifically for websites — smaller than TTF/OTF, so pages load faster. It's the older of the two web font formats, but still widely supported.
Used in: Website @font-face · Older browser support · CSS web fonts
04 / more
More conversions
From OTF
To WOFF
Have a different file? Open the main converter — it detects the format for you.