Will the font look different?

Curves are approximated within a fraction of a font unit; at text sizes the difference cannot be seen.

Are OpenType features kept?

Ligatures, kerning and other layout features in the GSUB/GPOS tables are preserved.

Can I convert TTF to OTF?

A TTF is already valid OpenType; renaming the extension is usually enough. Converting outlines to CFF is not offered.

Archives, Ebooks & Fonts

OTF to TTF

Some embroidery machines, older Windows apps, game engines and e-readers accept only TTF. Convert an OTF with PostScript curves to TrueType.

Runs in your browser — files never leave your device.

Drop OTF, WOFF, WOFF2 files here

or click to browse · paste from clipboard · up to 100 MB each

Select files

Why convert OTF to TTF

OTF and TTF are the same container; the difference is the outline format — cubic Bézier (CFF) versus quadratic (TrueType). Converting approximates each cubic curve with quadratics, which is visually identical at any practical size.

Hinting is not carried over, so the TTF relies on the renderer’s auto-hinting; on modern high-DPI screens this makes no visible difference. The conversion runs in your browser, so licensed fonts are not uploaded.

How it works

Drop OTF, WOFF, WOFF2 files onto the box above, click it to browse, or paste from the clipboard.
Check the file list; remove anything you added by mistake.
Press Convert. The work happens on your device, so speed depends on your computer or phone.
Download the TTF — individually or all at once.

About the formats

OTF · OpenType font · .otf

The successor to TrueType and Type 1: same container, adds advanced typography (ligatures, small caps, alternates) and PostScript outlines.

OTF is a superset of TTF; many .otf files are simply TrueType-flavoured OpenType.
Advanced OpenType features work in InDesign, browsers and modern Office, but not in every app.
OTF converts losslessly to WOFF2 for web use.

WOFF · Web Open Font Format 1.0 · .woff

The first web font container (2009): a compressed wrapper around TTF/OTF supported by every browser including Internet Explorer 9.

WOFF uses zlib compression, roughly 40 % smaller than raw TTF.
WOFF2 replaced it with Brotli compression and is about 30 % smaller again.
Desktop apps cannot install WOFF directly; it must be converted back to TTF or OTF.

WOFF2 · Web Open Font Format 2.0 · .woff2

The modern web font format: Brotli-compressed TTF/OTF, supported by all current browsers and recommended by Google Fonts.

WOFF2 is typically 30 % smaller than WOFF and 50–70 % smaller than TTF.
All browsers since 2016 (Chrome 36, Firefox 39, Safari 10, Edge 14) support WOFF2.
WOFF2 cannot be installed as a desktop font; convert to TTF for that.

TTF · TrueType font · .ttf

The desktop font format from Apple and Microsoft, installed on every computer; large and uncompressed for web use.

TTF glyphs are quadratic Bézier outlines; OTF may use cubic (PostScript) outlines instead.
A full TTF with many scripts can be several megabytes; WOFF2 subsets shrink it to tens of kilobytes.
Browsers can load TTF directly, but WOFF2 downloads 30–50 % faster.

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