OTF to WOFF2 Converter
Compress OpenType fonts to WOFF2 with in-browser WebAssembly.
SFNT compressed to WOFF2 with WebAssembly (Google WOFF2) in your browser. Glyph outlines are unchanged.
Choose a file or drag and drop
Drop your OTF file here or
Choose file · Drag & drop · Public file link
- Processed on your device
- No conversion file stored on our servers
- Maximum file size: 100 MB
Conversion runs in your browser. Files are not uploaded to Format Convertly servers.
Processed on your device
No conversion file stored on our servers
Conversion Settings
Customize the output to match your needs.
Convert Quality
92%Quality slider applies when the target is JPG, WebP, or AVIF.
Output
Output options for this format are applied automatically during browser conversion. Drop your file above to begin.
Advanced settings
Additional Options
How to Convert OTF to WOFF2
Add your OTF
Drop a OTF file into the browser panel. Nothing is sent to a remote queue.
Confirm settings
Review optional quality/size settings, then confirm WOFF2 as the output.
Download WOFF2
Convert locally and download the WOFF2 file when processing finishes.
Why Convert OTF to WOFF2?
Private by design
OTF → WOFF2 runs in your browser. Files are not uploaded to a remote conversion queue.
Ready for the next step
Convert when a site, editor, or teammate expects WOFF2 instead of OTF.
Preserve detail
WOFF2: brotli. Typically lossless or lightly transformed for editing and archival use.
Wide compatibility
OTF is commonly used for Professional layout and branding and Advanced typographic features.
OTF vs WOFF2
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | OTF | WOFF2 |
|---|---|---|
| Kind | font | font |
| Compression | none | brotli |
| Lossy / lossless | Lossless / not lossy | Lossless / not lossy |
| Transparency | Not supported / N/A | Not supported / N/A |
| Best for | Professional layout and branding; Advanced typographic features | Modern website typography; Performance-focused @font-face |
| Typical size | 50 KB – several MB | Often 30%+ smaller than WOFF |
| Browser / web support | Prefer WOFF2 for web delivery | Excellent in modern browsers |
| Compatibility | Excellent in design tools; convert CFF OTFs carefully when targeting TrueType-only pipelines | Supported by all modern browsers for @font-face; provide older fallbacks only if you still measure traffic on ancient clients |
Choose OTF when…
- Professional layout and branding
- Advanced typographic features
- Print design
- Desktop font libraries
Choose WOFF2 when…
- Modern website typography
- Performance-focused @font-face
- Self-hosted brand fonts (licensed)
- Replacing heavier WOFF/TTF web delivery
What happens to quality?
OTF: OTF compression: none. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: 50 KB – several MB. Quality note: Lossless vector outlines WOFF2: WOFF2 compression: brotli. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: Often 30%+ smaller than WOFF. Quality note: Lossless outlines with strong compression SFNT compressed to WOFF2 with WebAssembly (Google WOFF2) in your browser. Glyph outlines are unchanged.
Tip
Keep an original copy of your OTF file if you may need to reconvert later.
When should I use WOFF2?
WOFF2: WOFF2 typically yields the smallest web fonts and is supported by all modern browsers. Convert licensed TTF/OTF sources to WOFF2 for production CSS. Best for Modern website typography and Performance-focused @font-face.
WOFF2 format guide →When should I keep OTF?
Keep OTF when you still need to edit or when it already matches your audience. OTF supports rich typographic features (ligatures, alternates) used in professional design. Use OTF/TTF on the desktop; serve WOFF2 on websites when licensing allows.
OTF format guide →OTF · WOFF2
Related converters OTF
Related converters WOFF2
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting OTF to WOFF2 reduce quality?
Often no for lossless or remux-style paths. Quality drops when you re-encode with lossy settings, downscale, or flatten features like transparency.
Can you recover quality after converting?
Not from a lossy output alone. Return to the original master (or a better source). Converting to a lossless format does not resurrect discarded detail.
Where can I learn more about conversion quality?
Browse Format Convertly’s Quality guides for topics like whether conversion reduces quality, JPG↔PNG myths, WebP/MP3/MP4 tradeoffs, recovery limits, and generational loss — each links to the right converter.
Why is my font not working on the web?
Websites need WOFF2 (or WOFF), not just desktop TTF/OTF. Convert TTF→WOFF2, wire @font-face correctly, and confirm the license allows web use. Full guide: Why Is My Font Not Working on the Web?.
Where can I find more problem-solution guides?
Browse the Guides hub for long-tail fixes — HEIC won’t open, PNG too large, PDF not searchable, video too large, WebP upload failures, and more — each links to the right converter or tool.
Do you upload my font?
No. Font conversion runs in your browser with local JS/WebAssembly. Files are not uploaded to Format Convertly.
Are glyph outlines changed?
No for container conversions (TTF/OTF ↔ WOFF/WOFF2). Outlines stay the same; only the wrapper/compression changes. CFF→TrueType redraw is not supported in-browser.
What is a OTF file?
OTF is OpenType Font — an advanced scalable font format extending TrueType/CFF outlines. OTF supports rich typographic features (ligatures, alternates) used in professional design. Use OTF/TTF on the desktop; serve WOFF2 on websites when licensing allows.
Related problems
Ready to Convert Your Files?
OTF to WOFF2 privately in your browser.