Convert fonts between TTF, OTF, and WOFF (WOFF2 accepted as input) with custom-text preview before downloading. Ship web-ready WOFF in one pass — local opentype.js work, unlimited saves.
Runs on opentype.js
Content reviewed October 2026 · About Toolzum
Subset TTF/OTF fonts to used characters and export TTF or WOFF — cut webfont weight by 90%. Ship 12 KB instead of 150 KB — local opentype.js work, unlimited saves.
Generate favicon packages — PNG icons plus Apple touch icons — from one image. Note: the .ico file is PNG data renamed (modern browsers only). Ship every platform icon in one pass — local generation, unlimited saves.
Generate initial-based avatars with custom colors, fonts, and sizes — profile placeholders in seconds. Ship default user pics that look designed — local Canvas work, free, no signup.
Convert TTF/OTF to WOFF2 subset to only your used characters and cut 50–200 KB fonts to 2–15 KB. Performance engineers fix the render-blocking font in one batch — local opentype.js, 2 free batches a day.
Design sized social posts with text overlays and brand colors in 4 network sizes. Ship a week of creatives in one sitting — local Canvas work, unlimited saves.
WOFF for websites; TTF/OTF for desktop installs. WOFF is the only web output here — convert the WOFF onward elsewhere if you need WOFF2.
Type any custom text to render the uploaded font instantly — pangrams like 'Sphinx of black quartz' expose weak glyphs before converting. Preview is unlimited and local.
Outlines transfer exactly; hinting may simplify slightly at tiny sizes. Test converted body text at 14px next to the original before shipping.
No — conversion runs locally in your browser with opentype.js. Free-tool saves are unlimited; caps apply only to Pro tools (2 saves a day signed-in). Check your license allows format conversion first.
Font Subsetter
Subset TTF/OTF fonts to used characters and export TTF or WOFF — cut webfont weight by 90%. Ship 12 KB instead of 150 KB — local opentype.js work, unlimited saves.
Favicon Generator
Generate favicon packages — PNG icons plus Apple touch icons — from one image. Note: the .ico file is PNG data renamed (modern browsers only). Ship every platform icon in one pass — local generation, unlimited saves.