Does the converter process every TIFF page?
No. For a multi-page TIFF, only the first image page is decoded and converted.
Batch TIFF raster conversion
TIFF to AVIF Converter
Convert the first image page from one or more TIFF files to quality-controlled AVIF output.
Last updated: August 2026
Batch
TIFF files
85
Default quality
60–95
Quality range
Private
No uploads
Balanced
Drop TIFF files here or click to browse
Supports .tif and .tiff, all processing stays in your browser
How to convert TIFF to AVIF
01
Set AVIF quality
Choose a value from 60 to 95 before adding files; the default is 85.
02
Add TIFF or TIF files
Select one or more files. Conversion starts immediately for each accepted file.
03
Wait for local processing
The first TIFF page is decoded and encoded as AVIF in your browser.
04
Download the results
Save one AVIF at a time or package multiple completed results in a ZIP.
What the converter actually does
First page only
Additional pages in a multi-page TIFF are not included.
Immediate conversion
Files start decoding and encoding as soon as they are added.
Quality 60–95
The default value is 85 and applies when a file begins conversion.
Batch processing
Every accepted TIFF is tracked and converted as its own AVIF result.
Individual or ZIP
Multiple completed files are bundled only when Download all is used.
Two local codecs
A JavaScript TIFF decoder produces RGBA pixels, then a WebAssembly encoder creates AVIF.
Common TIFF-to-AVIF mistakes
Expecting all TIFF pages
Only the first page of each source file is converted.
Changing quality after adding files
Finished conversions are not automatically re-encoded.
Assuming AVIF must be smaller
Output size depends on the source pixels, dimensions and chosen quality.
Adding too many large scans
Batch decoding and AVIF encoding can exhaust browser memory.
Assuming every TIFF variant works
Some compressions or unusual TIFF structures may not decode.
Expecting source metadata
The AVIF is encoded from decoded pixels; TIFF metadata is not transferred.
Why use ImgTweak?
✓TIFF and TIF input
✓Batch conversion
✓Adjustable AVIF quality
✓Individual result downloads
✓ZIP for multiple results
✓No uploads or account required
Frequently asked questions
What quality settings are available?
AVIF quality ranges from 60 through 95 and starts at 85. Set it before adding files because conversion begins immediately.
Does changing quality re-encode completed files?
No. The slider value is read when each conversion starts. Previously completed results remain unchanged.
Can I convert multiple TIFF files?
Yes. Accepted TIFF and TIF files are added as a batch and processed separately.
How are multiple results downloaded?
One completed result downloads directly. When multiple results are ready, Download all creates a ZIP named converted-images.zip.
Is transparency preserved?
The decoder produces RGBA pixels and passes them to the AVIF encoder, but exact alpha behavior can depend on the source TIFF variant and encoder.
Why can a TIFF fail?
Corrupt files, unsupported TIFF variants or compression methods, very large dimensions and limited browser memory can prevent decoding or encoding.
Are my files uploaded?
No. The TIFF decoder and AVIF WebAssembly encoder run locally in your browser.
Ready to convert your TIFF files?
Set quality first, add the TIFF files above and download each completed AVIF or one ZIP.