Convert TIFF to AVIF — Free, Fast & Private
AVIF can turn a very large TIFF into a small file, but it is slow to encode and many apps cannot open it. Everything runs in your browser — nothing is uploaded.
First page only
A multi-page TIFF yields one AVIF from page 1, with a notice about the pages left out.
Colour and bit depth
CMYK pages are converted to RGB first, which can shift colours slightly. The output is a lossy 8-bit image.
Encoding large scans
AVIF encoding is slow, and a large scan takes longer still. Very large frames are scaled down with a note on the result. For quick, compatible output use TIFF to WebP; for lossless use TIFF to PNG.
Scans, print files and cameras
TIFF is lossless and often huge. AVIF can make a web copy very small, but encoding a big scan takes time and the AVIF is lossy. For long-term archiving keep the TIFF. The measured table below uses real TIFF files.
Check the AVIF against the TIFF before you save
The result card shows the TIFF size, the AVIF size and the output dimensions, with a notice when pages were left out. Batches download as a ZIP.
Where the AVIF will open
AVIF displays in Chrome 85+, Firefox 93+, Safari 16+ and Edge 85+. Print workflows, many image editors and a lot of upload forms still expect TIFF, JPG or PNG, so treat the AVIF as a web copy and keep the TIFF as the master.
TIFF to AVIF on real files: measured sizes
| File | Before | After | Change | Background |
|---|---|---|---|---|
| Phone photo as TIFF (2016 × 1512) | TIFF · 2016 × 1512 px · 10.2 MB | AVIF · 2016 × 1512 px · 467.0 KB | 22.3× smaller | — |
| Typed memo, scanned to grayscale TIFF | TIFF · 3400 × 4401 px · 2.30 MB | AVIF · 3400 × 4401 px · 274.4 KB | 8.6× smaller | — |
| App icon as TIFF (transparent) | TIFF · 2048 × 2048 px · 850.2 KB | AVIF · 2048 × 2048 px · 10.9 KB | 78.3× smaller | Kept transparent |
Measured 2026-10-07 in Chromium 145.0.7632.6 by running this page's converter with its default setting (AVIF) on each file. The photos and scans are CC0 or public-domain files from Wikimedia Commons; the TIFF photo is the phone photo halved and saved as an LZW TIFF; the grayscale TIFF is the memo scan saved the way a document scanner writes one (8-bit gray, LZW); the transparent TIFF is the measuring script's app icon saved as an RGBA TIFF. Sizes are shown as the tool shows them (1 KB = 1,024 bytes).