WOFF to OTF Converter
Unpack WOFF to OpenType SFNT in your browser.
WOFF unpacked to SFNT. Files with an OTTO signature are saved as .otf.
Choose a file or drag and drop
Drop your WOFF 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 WOFF to OTF
Add your WOFF
Drop a WOFF file into the browser panel. Nothing is sent to a remote queue.
Confirm settings
Review optional quality/size settings, then confirm OTF as the output.
Download OTF
Convert locally and download the OTF file when processing finishes.
Why Convert WOFF to OTF?
Private by design
WOFF → OTF 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 OTF instead of WOFF.
Preserve detail
OTF: none. Typically lossless or lightly transformed for editing and archival use.
Wide compatibility
WOFF is commonly used for Web font fallback stacks and Older @font-face pipelines.
WOFF vs OTF
A quick side-by-side before you convert — deeper comparison lives on the full guide.
| Feature | WOFF | OTF |
|---|---|---|
| Kind | font | font |
| Compression | zlib | none |
| Lossy / lossless | Lossless / not lossy | Lossless / not lossy |
| Transparency | Not supported / N/A | Not supported / N/A |
| Best for | Web font fallback stacks; Older @font-face pipelines | Professional layout and branding; Advanced typographic features |
| Typical size | Typically smaller than raw TTF/OTF | 50 KB – several MB |
| Browser / web support | Excellent | Prefer WOFF2 for web delivery |
| Compatibility | Works with CSS @font-face in browsers; not meant for OS font installation — keep TTF/OTF for desktop installs | Excellent in design tools; convert CFF OTFs carefully when targeting TrueType-only pipelines |
Choose WOFF when…
- Web font fallback stacks
- Older @font-face pipelines
- Licensed web embedding
- Converting desktop fonts for the browser
Choose OTF when…
- Professional layout and branding
- Advanced typographic features
- Print design
- Desktop font libraries
What happens to quality?
WOFF: WOFF compression: zlib. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: Typically smaller than raw TTF/OTF. Quality note: Lossless outlines with container compression 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 WOFF unpacked to SFNT. Files with an OTTO signature are saved as .otf.
Tip
Keep an original copy of your WOFF file if you may need to reconvert later.
When should I use OTF?
OTF: OTF supports rich typographic features (ligatures, alternates) used in professional design. Use OTF/TTF on the desktop; serve WOFF2 on websites when licensing allows. Best for Professional layout and branding and Advanced typographic features.
OTF format guide →When should I keep WOFF?
Keep WOFF when you still need to edit or when it already matches your audience. WOFF wraps TTF/OTF data with compression for CSS @font-face. Prefer WOFF2 today for smaller files, but WOFF remains a useful fallback in some pipelines.
WOFF format guide →WOFF · OTF
Related converters WOFF
Related converters OTF
Frequently Asked Questions
More on quality loss: conversion quality guides · problem-solution guides
Does converting WOFF to OTF 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.
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 WOFF file?
WOFF is Web Open Font Format 1.0 — a compressed font package for websites. WOFF wraps TTF/OTF data with compression for CSS @font-face. Prefer WOFF2 today for smaller files, but WOFF remains a useful fallback in some pipelines.
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.
Is WOFF to OTF free?
Yes. Format Convertly conversions are free to use in your browser with no signup required.
Ready to Convert Your Files?
WOFF to OTF privately in your browser.