Compress Font to WOFF2 Online — Convert TTF, OTF, WOFF Without Quality Loss

WOFF2 (Web Open Font Format 2) is a web font format built on Brotli compression. Unlike uncompressed TTF/OTF designed for desktop use, and WOFF which uses Gzip, WOFF2 delivers 30-50% smaller file sizes. This means faster site loading, reduced bandwidth consumption, and improved Core Web Vitals scores (LCP, CLS). WOFF2 is supported by 97%+ of browsers: Chrome, Firefox, Safari, Edge across all platforms. Converting TTF/OTF to WOFF2 is a required optimization step for any modern website.

Converting fonts to WOFF2 solves several problems at once: (1) faster loading — a 500 KB font becomes 150-250 KB in WOFF2, critical for mobile users and slow connections; (2) SEO — Google factors page speed into rankings, especially after Core Web Vitals rollout; (3) hosting bandwidth savings — at thousands of visits, smaller fonts save gigabytes of traffic monthly; (4) modern standard — all CDNs and frameworks recommend WOFF2 as the primary web font format, with WOFF as fallback only for legacy browsers.

No. WOFF2 conversion preserves every aspect of the original font. Our converter retains all font tables: cmap (character mapping), glyf (glyph outlines), head (font metrics), hhea (horizontal header), maxp (memory requirements), name (naming), OS/2 (Windows metrics), post (PostScript info), and all others. Brotli compression operates at the binary level like ZIP or Gzip — it does not alter content, only packs it more efficiently. After decompression, the browser receives a bit-identical font with all styles intact: bold, italic, variable weights — everything preserved.

Yes. Temporary files are created in an isolated directory with a unique name, processed, and immediately deleted along with the result after delivery to the user. The server never stores original or converted fonts. We do not analyze content, extract metadata, or log files. The process is fully automated and leaves no traces on the server. If confidentiality is critical — you can use the converter without any concerns about font security. Processing happens server-side in real time with automatic cleanup.

Yes, batch processing is supported: upload multiple TTF/OTF/WOFF files via file picker or drag-and-drop, click 'Convert' — each file is processed sequentially. After conversion, you will see compression statistics for every file and can download all results as a ZIP archive or individually using the 'Download Separately' button. This is convenient when migrating a website to WOFF2 — upload all your fonts at once and get a ready-to-use set.

After conversion, use the @font-face rule in your CSS. Basic example: @font-face { font-family: 'MyFont'; src: url('/fonts/MyFont.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }. For maximum compatibility, add a WOFF fallback: src: url('MyFont.woff2') format('woff2'), url('MyFont.woff') format('woff');. The font-display: swap property prevents invisible text during font loading. WOFF2 should come first in the list — the browser will select the most efficient supported format automatically.

Compression depends on font structure: (1) simple unhinted fonts (100-300 KB) compress by 60-70% — a 200 KB TTF becomes 60-80 KB WOFF2; (2) medium hinted fonts (300-800 KB) — 50-65% compression, e.g. 500 KB → 175-250 KB; (3) large multi-style fonts (1-5 MB) — 40-55% compression. Our converter uses Brotli level 11 (maximum compression) for the best lossless results. The final WOFF2 size is typically 30-50% of WOFF and 40-60% of TTF size.

WOFF2 is a container format, not a character format. It preserves all data from the source font, including any writing systems. If your TTF/OTF contains Cyrillic, Latin, Greek, Arabic, CJK characters, or emoji — WOFF2 preserves them completely. No characters are lost during conversion. WOFF2 supports Unicode ranges and subset fonts exactly the same way as the source format.