Fonts

WOFF → WOFF2

Need the other direction? WOFF2 → WOFF →

Convert your WOFF font files to the more efficient WOFF2 format, significantly reducing file sizes for faster web loading. This conversion is ideal for web developers aiming to optimize website performance.

WOFF (Web Open Font Format) and WOFF2 are both web-specific font formats. WOFF uses zlib/deflate compression, while WOFF2, its successor, employs the advanced Brotli compression algorithm. Converting from WOFF to WOFF2 replaces the older compression with Brotli, resulting in a substantially smaller file without altering the font's design or glyph data.

This conversion is lossless. The font's visual appearance and internal data remain perfectly intact; only the compression method is updated.

Tips

Prioritize WOFF2 in your @font-face declarations for modern browser performance.
Use WOFF as a fallback format only for very old browsers that may not support WOFF2.
Verify font rendering across different browsers after conversion to ensure consistent display.
Consider implementing HTTP/2 push or a CDN for optimal delivery of WOFF2 files.

Common use cases

Optimizing website loading speeds by reducing web font file sizes.
Updating legacy web projects to leverage modern web font standards.
Minimizing bandwidth consumption for websites with custom typography.
Improving Core Web Vitals scores related to page load performance.

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File formats: what to choose

A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.

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Fonts

Typefaces for websites, design, and documents.

Common extensions: TTF, OTF, WOFF, WOFF2

Advantages

+ WOFF2 is ideal for fast web loading
+ OTF supports advanced typography features
+ TTF works across desktop apps

Disadvantages

− License restrictions may limit conversion or embedding
− Hinting can differ between formats
− Variable font axes may be lost in conversion

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Images

Raster and vector graphics for web, print, and photography.

Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF

Advantages

+ WebP and AVIF offer excellent compression for the web
+ PNG keeps transparency and sharp edges
+ SVG scales without quality loss

Disadvantages

− RAW and TIFF files are large and slow to share
− JPEG loses quality on every re-save
− Some formats are not supported in older browsers

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Documents

Office files, PDFs, ebooks, and plain text.

Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT

Advantages

+ PDF locks layout for printing and sharing
+ DOCX and ODT are easy to edit collaboratively
+ Plain text works on any device

Disadvantages

− PDF is hard to edit without special tools
− Complex layouts may shift after conversion
− Scanned PDFs need OCR for editable text

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Video

Clips, streams, screen recordings, and movies.

Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG

Advantages

+ MP4 (H.264/H.265) plays almost everywhere
+ WebM is efficient for web embedding
+ MKV can hold multiple audio and subtitle tracks

Disadvantages

− High-resolution video needs lots of storage and bandwidth
− Re-encoding always takes time and may reduce quality
− Some codecs require licensing for commercial use

Frequently asked questions

No, the conversion only changes the compression method. The font's visual design and glyph data remain precisely the same.

WOFF2 uses the Brotli compression algorithm, which offers about 30% better compression than WOFF's zlib, leading to smaller file sizes and faster page loads.

Yes, WOFF2 enjoys widespread support across all major modern browsers. WOFF is largely a fallback for very old browser versions.

Yes, it is generally recommended to replace WOFF with WOFF2 as the primary font format due to its performance benefits. Always provide WOFF2 first in your @font-face stack.

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