How to preview a .WOFF file online
See your .WOFF file in action before you install it, license it or send it to a client.
Pick your .WOFF file
Drag it in or click to choose it, or try one of the samples below. Nothing is installed or uploaded from your device.
Type and test
Write your own text, change the size, switch OpenType features like ligatures and small caps, and move variable-font sliders.
Inspect and use
Browse every glyph with its outline, check language coverage, read the licence and copy ready-made @font-face CSS.
About .WOFF files
What a .WOFF file is, and what's inside it.
A WOFF file is a web font, a TrueType or OpenType font compressed for fast delivery to browsers via CSS @font-face. Browsers load it automatically; you never open it directly. To install it on your desktop, convert the WOFF to TTF or OTF first using FontForge or a web converter. For new websites, use WOFF2; it is about 30% smaller.
Programs that open .WOFF files
| Full name | Web Open Font Format |
|---|---|
| Developer | W3C WebFonts Working Group (originated by Mozilla, Type Supply, LettError) |
| First released | 2009; W3C Recommendation December 2012 (WOFF 1.0) |
| Category | Fonts |
| MIME type | font/woff |
| Signature | 77 4F 46 46 "wOFF" - WOFF 1.0 signature at offset 0 |
Related viewers
Other free viewers that work the same way.
Does opening a .WOFF file install it on my computer?
No. The font is loaded only inside this browser tab and disappears when you close it. Nothing is installed or uploaded.
How do I know which languages a font supports?
Open the Languages tab. We check the font's character map against the letters each language needs, for example ą ć ę ł ń ó ś ź ż for Polish, and show what's missing.
What are OpenType features?
Optional typographic extras built into a font: ligatures, small caps, old-style or tabular figures, fractions, stylistic sets. Switch them on and off in the Type tester to see what your font offers.
Can I use this font on my website?
Technically yes. Copy the @font-face CSS from the side panel. Legally, check the licence shown in the font info: many fonts are free (SIL Open Font License), others need a web licence.
Why does my Type 1 font look like an image?
Browsers can't use Type 1 fonts, so we render a specimen with Ghostscript instead. You can still type your own sample text and zoom in.
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