Why convert TIFF to AVIF?

AVIF can meaningfully shrink images for sites that already serve modern image formats.

Are my files uploaded?

No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.

What is validated before conversion?

The file must actually be a TIFF — the tool checks the byte-order header (little-endian ‘II*’ or big-endian ‘MM*’), not just the filename or extension, before decoding.

Diagram showing a TIFF file converting into a AVIF file inside a browser window

Image guides

How to Convert TIFF to AVIF in Your Browser

Converting a TIFF image to AVIF produces a modern AVIF file with adjustable quality, encoded with the browser canvas API and verified as a real image/avif download. This guide covers the steps, quality control, and transparency behavior.

Ready to try the tool this guide describes?

Open TIFF to AVIF →

Step-by-step conversion

Open /tools/tiff-to-avif.
Choose a TIFF or TIF file — the content is validated before conversion.
Adjust AVIF quality if needed.
Select Convert & download.
Save the .avif file from your browser downloads.

Transparency and quality

Transparent pixels from the source stay transparent when the browser AVIF encoder supports alpha.

Source-specific behavior

Multi-page TIFF: only the first page is converted. Additional pages are not extracted or included in the download.

Privacy

Conversion runs locally in your browser. The file is not uploaded to Looty Tools servers for this workflow.

Convert TIFF to AVIF FAQ

Why convert TIFF to AVIF?: AVIF can meaningfully shrink images for sites that already serve modern image formats.
Does this convert every page of a multi-page TIFF?: No. Only the first page (IFD) is converted. Additional pages are not extracted or included in the download.
Does AVIF output keep transparency?: Transparent pixels from the source stay transparent when the browser AVIF encoder supports alpha.
Are my files uploaded?: No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.
What is validated before conversion?: The file must actually be a TIFF — the tool checks the byte-order header (little-endian ‘II*’ or big-endian ‘MM*’), not just the filename or extension, before decoding.

Related guides

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Jump into TIFF to AVIF when you are ready to process your files.

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