Turn TTF files into WOFF in a couple of clicks. TTF is the classic desktop font format; WOFF is a compressed font wrapper built for the web. The conversion is lossless — every pixel, sample or byte in the source is preserved.
Drop your files here
TTF files (.ttf) · up to 40.0 MB each
or paste files from your clipboard
Ready when you are
Drop a TTF file above and FileTools360 will turn it into WOFF — right here on your device, without uploading anything.
Drag them onto the drop area, choose them from your device, or paste them from your clipboard. You can queue several at once. Nothing is sent anywhere — the file stays on this device.
The defaults suit most people. Open Advanced to control the output settings.
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.
Privacy, in plain words
What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.
What happens instead. This site does not do it. There is no server here that receives files, so your TTF file is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.
Check it yourself in ten seconds
Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.
The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.
A font is licensed rather than owned, and the licence usually says something specific about copies. It matters more than it sounds, because of what font files usually are:
Foundry trial fonts
explicitly licensed for evaluation only
Fonts with embedded metadata
which names the licensee inside the file
Licensed commercial typefaces
where redistribution is a contract breach
Custom brand fonts
drawn for one company and not released
A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.
TrueType describes glyph outlines with quadratic curves and includes hinting instructions that improve rendering at small sizes on low-resolution screens.
WOFF wraps a TrueType or OpenType font with compression and metadata, specifically for delivery over the web.
The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.
| Property | Source | Target |
|---|---|---|
| Compression | None | Lossless |
| Introduced | 1991 | 2009 |
| Browser support | Every operating system. | All browsers including old ones. |
People make this switch when they run into the limits of TTF: serving fonts on a website — WOFF2 is far smaller. WOFF is the better fit when you must support browsers from before roughly 2016.
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.
The WOFF came out 2.0× smaller than the file that went in.
| Sample | TTF in | WOFF out | Change |
|---|---|---|---|
| Noto Sans RegularA full Latin typeface of around 300 KB — an ordinary web font rather than an icon set or a single-weight display face. | 556 KB | 271 KB | −51% |
Produced by this site's own converter. The same code that runs in your browser, at the same default settings, so these are the bytes you would download.
Samples are generated from a fixed seed rather than taken from real photographs or documents, so the corpus is reproducible and carries no licensing question — and so the numbers predict the shape of your result rather than its exact size. Measured 2026-10-01. The method, and the command that regenerates every figure on this page, are on the how it works page.
Source
The classic desktop font format.
Target
Compressed font wrapper built for the web.
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
Runs entirely in your browser
527 converters and tools65 file formatsnothing ever uploaded.