What App Opens WOFF2 Files?

WOFF2 files are the most common font files on the web, but almost no app on your computer opens them. Font Viewer on Windows ignores them. Font Book on Mac will not install them. So what app opens WOFF2 files? This guide lists the tools that actually work, what each one can do, and which to pick for your device.

Why so few apps open WOFF2

WOFF2 is a web font format. It holds a normal font, but packed with Brotli compression and a special layout for glyph outlines. To read it, an app must know how to undo both. Browsers have this built in, because they use WOFF2 every day. Most desktop apps do not, because they expect installed fonts in TTF or OTF format.

That gives us a simple rule: anything built on a browser can read WOFF2. Most other apps need a converted TTF or OTF instead.

If you want to understand the format first, read what a WOFF2 file is.

WOFF2 support at a glance

App or tool	Opens WOFF2?	What you can do	Platforms	Cost
Open WOFF File	Yes	Preview, font info, glyphs, convert to TTF/OTF	Any browser	Free
FontForge	Yes, in recent builds	View, edit, export	Windows, Mac, Linux	Free
fontTools (Python)	Yes, with brotli	Convert, inspect, subset	Windows, Mac, Linux	Free
Google woff2 tools	Yes	Compress and decompress	Build from source	Free
Glyphs	Yes (import/export)	Design and edit	Mac	Paid
FontLab	Yes	Design and edit	Windows, Mac	Paid
Windows Font Viewer	No	Nothing	Windows	Built in
Mac Font Book	No	Nothing	Mac	Built in
Word, Photoshop, Canva	No	Need an installed TTF/OTF	Various	Various

1. A browser-based WOFF2 viewer (best for most people)

Our free WOFF2 viewer opens WOFF2 files in any modern browser. It is the quickest option on every device, including phones.

• Drop the file on the pink box.
• See a live preview you can type into.
• Read the font name, style, version, designer and license.
• Browse every glyph and copy characters.
• Convert to TTF or OTF with one click.

The first WOFF2 file you open loads a small WOFF2 reader. After that, files open fast. Nothing is uploaded, so it is safe for private or paid fonts.

2. FontForge (best free editor)

FontForge is a free, open source font editor. Recent versions open WOFF2 files directly and can export them as TTF, OTF, WOFF or WOFF2. Older builds may lack WOFF2 support, so download the latest version from the official site.

Use FontForge when you want to change something: fix a glyph, rename the font, adjust spacing or export an icon as SVG. It is overkill for a quick look. Our guide on how to edit a WOFF file shows the basics, and the same steps work for WOFF2.

3. fontTools (best for developers)

fontTools is a Python library used by type designers and big font projects. It reads and writes WOFF2 when you also install the brotli package.

pip install fonttools brotli
fonttools ttLib.woff2 decompress myfont.woff2
ttx -t name myfont.woff2

The first command turns the WOFF2 into a TTF or OTF. The second dumps the name table to a readable file, so you can see the font’s names. fontTools is ideal for handling many files or adding font steps to a build process.

4. Google’s woff2 tools

Google publishes the reference tools for WOFF2, called woff2_compress and woff2_decompress. They do one job each and do it well. You usually have to build them from source code, so they mainly suit developers who need exact reference behavior.

5. Glyphs and FontLab (for type designers)

Glyphs (Mac) and FontLab (Windows and Mac) are professional font editors. Both can work with WOFF2 files. They cost money and take time to learn. If you design fonts, you likely already have one. If not, a free tool will do.

Apps that do not open WOFF2 files

It saves time to know what will not work.

• Windows Font Viewer: only TTF, OTF and older desktop formats. See how to open WOFF2 files on Windows.
• Mac Font Book: only desktop formats. See how to open WOFF fonts on a Mac.
• Microsoft Word, PowerPoint, Excel: use installed fonts only.
• Photoshop, Illustrator, GIMP: use installed fonts only.
• Text editors like Notepad: show compressed data, not the font.

For all of these, the answer is the same. Convert the WOFF2 to TTF, install it, then use it. Our guide on converting WOFF2 to TTF walks you through it.

The best app for each device

Windows 10 and 11

Use the browser viewer in Edge or Chrome for a quick look. For installing, convert to TTF, then right-click and choose Install.

Mac

Use the viewer in Safari or Chrome. To install, convert to TTF or OTF and double-click the result to open Font Book.

Linux

The viewer works in Firefox and Chrome. For command-line work, fontTools is available through pip and most package managers.

Android

Use the viewer in Chrome. Tap the pink box and choose the file from Downloads or Files. There are font apps in the Play Store, but most expect TTF or OTF.

iPhone and iPad

Use the viewer in Safari. Tap the pink box, choose Browse and pick the file from the Files app. iOS does not let you install fonts system-wide in the normal way, so viewing is the main use.

How to pick the right tool

Ask yourself what you want to do with the WOFF2 file.

• See what the font looks like: browser viewer.
• Find out the font’s name: browser viewer. See how to find the font name inside a WOFF2 file.
• Check which characters it has: browser viewer, Glyphs grid.
• Use it in Word or Photoshop: browser viewer to convert, then install the TTF.
• Edit the font: FontForge, Glyphs or FontLab.
• Convert hundreds of files: fontTools.

What a good WOFF2 viewer should do

Not all viewers are equal. If you try a few, look for these features:

1. Runs on your device. The file should not be uploaded.
2. Reads the real name. It should show the family, style and full name from inside the font.
3. Shows every glyph. Not just a sample sentence, but the full character set with codes.
4. Lets you type. Your own text is the best test of a font.
5. Shows the license. You need it before you reuse a font.
6. Converts to TTF or OTF. So you can install the font if you need to.
7. Works on phones. Fonts often arrive by email or chat on your phone.

Our viewer does all seven, and it is free. If another tool fits your work better, that is fine too. The checklist still helps you judge it.

Where people usually get stuck

Most WOFF2 questions come from the same few situations:

• Someone sent you a website’s font folder and asked which fonts it uses. Open each file in a viewer and read its name.
• You want to reuse a font from a website in a design. Check the name and license first, then look for the official download.
• Your app does not list the font after you installed it. You probably installed nothing, because WOFF2 cannot be installed. Convert first.
• The font has missing letters. Web fonts are often cut down. See why WOFF fonts show boxes.

Why some online tools are a risk

Many websites offer to open or convert WOFF2 files. Some process your file on their server. That means your font is uploaded to someone else’s computer. For free fonts, that may not matter. For paid fonts, client work or unreleased brand fonts, it can break your license or your agreement with a client.

Look for tools that say clearly that files stay on your device. Our viewer never sends your font anywhere. You can check this yourself by watching the Network tab in your browser’s developer tools while you open a file.

Common questions

Is there an official WOFF2 viewer?

No. WOFF2 is an open standard, not a product. Browsers support it natively, and many tools can read it.

Can VS Code open WOFF2 files?

VS Code opens them as binary data, not as a font preview. Some extensions add font previews. A browser viewer is simpler for most people.

Why does my WOFF2 file open as a download in Chrome?

Browsers use fonts inside pages, not as standalone documents. Opening a WOFF2 file directly just downloads it. Use a viewer page to see it.

Do all these apps also open WOFF files?

Yes. Every tool here that reads WOFF2 also reads the older WOFF format. See what app opens WOFF files for a list focused on WOFF.

Summary

Browsers can read WOFF2, and almost nothing else on your computer can. For a quick look on any device, use a free browser-based WOFF2 viewer. To use the font in desktop apps, convert it to TTF or OTF and install it. For editing, pick FontForge. For bulk work, use fontTools.