TTF to OTF Converter
Convert TTF to OTF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is a TTF file?
The TrueType Font (TTF) format is an outline font standard developed by Apple in the late 1980s and subsequently licensed to Microsoft to compete with Adobe's Type 1 PostScript fonts. TTF relies on quadratic Bézier curves to define glyph shapes and includes a robust hinting virtual machine that provides pixel-level control over rasterization, ensuring legibility at low resolutions. The file structure consists of a directory of tables (e.g., 'cmap' for character mapping, 'glyf' for outlines) and is standardized under ISO/IEC 14496-22.
How to open a TTF file
TrueType fonts are natively supported by virtually all modern desktop and mobile operating systems. In Windows, macOS, and Linux, opening a TTF file launches the default font management utility, allowing users to preview and install the typeface system-wide. While viewed easily at the OS level, modifying the internal vector paths or hinting instructions requires font editing tools like FontForge or BirdFont.
TTF Technical Info
- Full Name
- TrueType Font
- Developed By
- Apple Inc., Microsoft
- Initial Release
- 1989
- MIME Type
- font/ttf
What is an OTF file?
The OpenType Font (OTF) format is a cross-platform scalable font standard developed jointly by Adobe and Microsoft in 1996 to supersede TrueType and PostScript Type 1 formats. OTF files encapsulate outline data using either Compact Font Format (CFF) based on cubic Bézier curves (PostScript) or TrueType outlines based on quadratic Bézier curves. The format adheres to ISO/IEC 14496-22 (Open Font Format) standards and supports advanced typographic features such as ligatures, glyph substitution, and alternate characters via feature tables (GSUB, GPOS).
How to open an OTF file
OTF files enjoy native support across all major operating systems, including Windows, macOS, Linux, Android, and iOS. Users can install the font by double-clicking the file to launch the OS-native Font Viewer (Windows) or Font Book (macOS) and selecting the install option. For editing glyph paths or kerning metrics, vector graphic editors like Adobe Illustrator or dedicated typography software such as Glyphs and FontLab are required.
OTF Technical Info
- Full Name
- OpenType Font
- Developed By
- Adobe Systems, Microsoft
- Initial Release
- 1996
- MIME Type
- font/otf
More tools
Related conversions
Why RunConvert
The fastest way to convert any file
Purpose-built for speed, privacy, and breadth of format support.
Convert TTF to OTF in seconds
Every TTF to OTF conversion runs on our servers, so your device stays fast and the output quality stays intact.
Fast, cloud-powered
No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
Secure & private
Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
Free - no account needed
Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.
Developer API
Convert TTF to OTF via API
Automate TTF to OTF conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "ttf-to-otf",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "otf"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.ttf
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.