How do I convert OTF to TTF?

Add your OTF file to the upload area above, then press Convert. The TTF file downloads straight to your device. You do not need an account, and there is no watermark.

Are my files uploaded to a server?

No. This conversion runs entirely inside your browser using WebAssembly, so the file never leaves your device — you can even disconnect from the internet after the page loads and it will still work.

Does converting to TTF reduce quality?

No. TTF is a lossless format, so the conversion preserves exactly what is in your OTF file. Note that it cannot recover detail that was already discarded when the OTF was first created — a lossless container does not undo earlier compression.

How large a file can I convert?

Up to 40 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android, including choosing files straight from your camera roll. Very large videos may run out of memory on a phone — those are better converted on a laptop.

FontLosslessRuns in your browser

OTF to TTF Converter

Turn OTF files into TTF in a couple of clicks. OpenType with advanced typographic features. The classic desktop font format. The conversion is lossless — every pixel, sample or byte in the source is preserved.

On your deviceNever uploadedGone when you close the tabHow this works

Drop your files here

OTF files (.otf) · up to 40.0 MB each

or paste files from your clipboard

Ready when you are

Drop a OTF file above and FileTools360 will turn it into TTF — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your OTF files
Drag them onto the upload area, choose them from your device, or paste them from your clipboard. You can queue several at once.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control the output settings.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

OTF and TTF explained

OpenType extends TrueType with cubic curves and, more importantly, advanced typographic features: ligatures, small caps, stylistic alternates and proper multilingual shaping.

TrueType describes glyph outlines with quadratic curves and includes hinting instructions that improve rendering at small sizes on low-resolution screens.

Where OTF files come from: Professional type foundries and design workflows.
Where TTF is used: System fonts and font downloads for desktop installation.

OTF vs TTF

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

OTF compared with TTF
Property	Source	Target
Compression	None	None
Introduced	1996	1991
Browser support	Every modern OS and design tool.	Every operating system.

OTF is stronger at: Advanced typographic features. Better multilingual support. Cross-platform.
TTF is stronger at: Installs on every operating system. Detailed hinting for small-size rendering. Widely supported by design software.

Why convert OTF to TTF?

People make this switch when they run into the limits of OTF: web delivery. TTF is the better fit when installing a font on a computer or using it in design software.

OTF limitations that prompt the switch: Uncompressed, so it is a poor web font. Advanced features need application support to be usable.
What you give up: Uncompressed, so it wastes bandwidth as a web font. Fewer advanced typographic features than OpenType.

What is preserved when converting OTF to TTF?

Both formats store the content without discarding data, so this conversion preserves it exactly. The file size may change because the two formats compress differently, but the content itself is unaffected.

About these formats

Source

OpenType Font

OpenType with advanced typographic features.

Extensions: .otf
MIME type: font/otf
Best for: Professional typography · Ligatures and alternates
Compatibility: Every modern OS and design tool.

Target

TrueType Font

The classic desktop font format.

Extensions: .ttf
MIME type: font/ttf
Best for: Desktop installation · Design software
Compatibility: Every operating system.

Glyph outlines and metadata are preserved. Converting a font does not grant you the right to redistribute or embed it — check the licence that came with the file.

Good to know