Web Font Generator — Convert TTF to WOFF & WOFF2 Online Free
If you build websites, you have probably run into this problem: you have a beautiful desktop font (TTF or OTF) but it does not render on the web. Browsers need web-specific formats — WOFF and WOFF2 — to display custom fonts. Converting fonts used to require desktop software or sketchy online uploads. Now you can do it for free in your browser.
What Is a Web Font?
A web font is a font file specially optimized for use on websites. The most common web font formats are WOFF (Web Open Font Format) and WOFF2 (the compressed successor). Unlike desktop fonts (TTF/OTF), web fonts use metadata structures and compression that browsers expect. WOFF2 in particular offers 30-50% smaller file sizes compared to TTF, which means faster page loads and better Google Core Web Vitals scores.
Using QuickToolSpark Web Font Generator
Upload a TTF, OTF, WOFF, or WOFF2 file and the tool converts it to all three missing formats using fonteditor-core — a powerful font parsing library that runs in your browser via WebAssembly. You can preview the font instantly with a live text sample, copy the generated @font-face CSS code including base64-encoded WOFF2, and download the individual format files. Everything stays on your device — nothing is uploaded to any server.
Understanding @font-face
The @font-face CSS rule tells the browser to download and use a custom font. The key properties are font-family (the name you use in CSS), src (the font file URL or data URI), font-weight, and font-style. QuickToolSpark generates this code for you automatically with the correct MIME types for each format, including a base64 data URI for WOFF2 so you can embed the font directly in your CSS for zero extra requests.
Which Font Format Should You Use?
WOFF2 is supported by all modern browsers (Chrome, Firefox, Safari, Edge) and offers the best compression. WOFF is a good fallback for very old browsers. TTF/OTF should only be used as source files, not on the web. For best performance, serve WOFF2 with a WOFF fallback and include the TTF only as a last resort. QuickToolSpark gives you all three so you can cover every browser.
Tips for Using Custom Fonts on the Web
Use font-display: swap in your @font-face rule to prevent invisible text while the font loads (the FOIT problem). Limit the character set to only the glyphs you need using subsetting tools. Preload your primary font files with <link rel="preload"> for faster rendering. And always check your license — not all desktop fonts are licensed for web embedding, even after conversion.