Convert Font Files on Windows Without Installing Software

Windows handles font installation and preview well enough, but it has no built-in way to convert between font formats. If you need to turn a TTF into a WOFF for a web project, or convert an OTF to TTF for compatibility, the operating system offers nothing — you need an external tool.

The fastest no-install option is the WildandFree Font Converter, which runs directly in Edge, Chrome, or Firefox and converts between TTF, OTF, and WOFF without uploading your file anywhere.

Convert Fonts in the Browser on Windows — No Admin Rights Required

Open the font converter in any Windows browser. Edge is built into Windows 10 and 11, so it's available even on a locked-down machine where you can't install applications.

1. Navigate to the converter in Edge, Chrome, or Firefox
2. Drag your font file from File Explorer onto the drop zone, or click to browse
3. Select the output format: TTF, OTF, or WOFF
4. Click convert — the file downloads to your Downloads folder

The file is processed locally in your browser. Nothing is uploaded to a server. This matters if you're working with licensed fonts that can't be shared externally.

Works on Windows 10, Windows 11, and older Windows versions with a modern browser installed.

What Conversions Are Available

The browser converter supports these format pairs:

• TTF → OTF
• TTF → WOFF
• OTF → TTF
• OTF → WOFF
• WOFF → TTF
• WOFF → OTF

WOFF2 conversion requires fonttools (covered below) because WOFF2's Brotli compression isn't supported in the browser converter.

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Desktop Font Conversion Software for Windows

If you prefer a desktop application or need features beyond what the browser converter provides, two free options are worth knowing:

FontForge — a full open-source font editor available for Windows (installer from fontforge.org). Can convert between essentially any font format, edit glyphs, and modify metadata. Significantly more complex than a simple converter, but it's the tool professional font engineers use. Overkill for simple TTF↔WOFF conversions.

fonttools (Python) — a command-line library that runs in Windows PowerShell or Command Prompt. Install Python from python.org, then pip install fonttools. Handles all common conversions including WOFF2. Faster for batch processing than any GUI tool once it's set up.

Converting to WOFF2 on Windows

WOFF2 requires fonttools with the Brotli package. On Windows:

1. Install Python from python.org (check "Add Python to PATH" during install)
2. Open PowerShell or Command Prompt and run: pip install fonttools brotli
3. Convert: python -m fonttools ttLib.woff2 compress yourfont.ttf

This produces yourfont.woff2 in the same directory. The setup takes about five minutes; after that, converting any TTF to WOFF2 is a single command.

Where to Find Font Files on Windows

Windows stores fonts in two locations:

• System fonts: C:WindowsFonts — contains all fonts installed for all users
• User fonts: C:Users[username]AppDataLocalMicrosoftWindowsFonts — fonts installed for the current user only (Windows 10 version 1809+)

In File Explorer, paste either path into the address bar to browse directly. Drag any TTF or OTF file from there into the browser converter. Note that some system fonts are locked — you may need to copy them to your Desktop first before the converter can read them from the browser's file picker.

Frequently Asked Questions

Can I convert fonts on Windows without installing anything?

Yes. The browser-based font converter runs in Edge, Chrome, or Firefox with no install and no admin rights required. It converts TTF, OTF, and WOFF files locally in your browser.

Does Windows 10 have a built-in font converter?

No. Windows 10 and 11 can preview and install fonts but have no built-in tool for converting between font formats. You need either a browser-based converter or a third-party tool like fonttools.

How do I convert a font to WOFF on Windows?

Open the browser-based font converter in Edge or Chrome, drag your TTF or OTF file onto it, select WOFF as the output format, and download the result. No software installation required.