TTF Won't Open? Convert to WOFF Instantly
Fast, instant TTF to WOFF conversion. No signup required. Just drop your .ttf file and get .woff in seconds.
Batch Settings
Some metadata may not survive
Your TTF file may contain name table, OS/2 table metadata. WOFF has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
ウェブフォントの進化は目覚ましく、特に日本語の表現において、その重要性は増すばかりです。多種多様な漢字や仮名を含む日本語フォントはファイルサイズが大きくなりがちですが、WOFF形式への変換は、ウェブサイトの読み込み速度向上と帯域幅の節約に不可欠です。訪問者の方々がストレスなく美しいタイポグラフィを堪能できるよう、TTFをWOFFへ変換する手順は、もはやウェブ制作の基本と言えるでしょう。このページでは、お手持ちのTTFファイルをWOFF形式へと手軽に変換する方法をご案内します。複雑な設定は不要、数クリックで最適なウェブフォントを手に入れ、読者の心に響くサイト作りにお役立てください。特に縦書き表示を考慮したデザインでは、フォントの最適化が美しさと機能性を両立させる鍵となります。
- 漫画・アニメ系サイトの独自フォント
- 企業サイトのブランド統一
- 縦書きレイアウトの表示最適化
日本語フォントは欧文フォントに比べ文字種が非常に多いため、WOFF形式への変換によるファイルサイズ削減効果は特に顕著です。これにより、日本のユーザーが期待する高速なウェブ体験を提供しやすくなります。
About TTF to WOFF Conversion
Dealing with a TTF file that won't open on your device? You're not alone — TTF compatibility issues are one of the most common reasons people search for a file converter. TTF (TrueType Font) is the classic font format supported everywhere.
The fix is simple: convert your TTF to WOFF. WOFF (Web Open Font Format) wraps TTF/OTF in compression for fast web delivery. This conversion lets you upgrade to a modern format, solving the problem in seconds rather than hours of troubleshooting.
Full Name: TTF uses TrueType Font, while WOFF uses Web Open Font Format. Compression: TTF uses None (uncompressed), while WOFF uses Lossless. Typical File Size: TTF uses 50–500 KB, while WOFF uses 30–300 KB. Converting TTF to WOFF maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your TTF file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you You need a file that works in web browsers.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert TTF to WOFF
- 1
Add your TTF file
Drag and drop your .ttf file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick WOFF output
Select .woff as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The font engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .woff file. For batch jobs, download all at once as a zip.
What Happens When You Convert TTF to WOFF
Your TTF file is decoded and re-encoded as WOFF.
Your TTF file is uploaded and the format is validated
The file content is decoded into its raw representation
The data is re-encoded in WOFF format with optimal settings
The converted file is ready for download
TTF vs WOFF — Detailed Comparison
| Feature | .TTF | .WOFF |
|---|---|---|
| Full Name | TrueType Font | Web Open Font Format |
| Compression | None (uncompressed) | Lossless |
| Typical File Size | 50–500 KB | 30–300 KB |
| Platform Support | Universal | Limited |
| Browser Support | Universal | Universal |
| Year Created | 1991 | 2010 |
| Open Standard | Yes | Yes |
Should You Convert TTF to WOFF?
When to Convert
- ✓You need a file that works in web browsers
Frequently Asked Questions
Why won't my TTF file open?
TTF files may not open if your device lacks the right codec or application. Converting to WOFF — a more widely supported format — usually resolves this. WOFF (Web Open Font Format) wraps TTF/OTF in compression for fast web delivery.
Is it safe to convert TTF to WOFF online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting TTF to WOFF?
Converting TTF to WOFF maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my TTF file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert TTF to WOFF on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.