Convert TIFF to AVIF

Converting TIFF to AVIF is worth doing when the destination matters more than the source. TIFF is built for scanning and print workflows, often multi-page and very large. AVIF is built for the smallest modern web images, at the cost of slower encoding. Which one you want depends entirely on where the image is going next.

Maximum compression for archival scans headed somewhere modern. The size reduction from TIFF to AVIF is dramatic, though narrow support means this is not the format to hand to a print shop or a records system.

TIFF files frequently contain more than one page, which is common with scans. Since AVIF holds a single image, each page becomes its own file rather than being combined.

AVIF compresses by discarding detail, so this conversion trades some fidelity for a much smaller file. At high quality settings the difference is invisible in photographs, though flat colour and sharp text can show artefacts. Keep the TIFF original as your master copy.

AVIF compresses harder than anything else here, so coming from a lossless source the reduction can be dramatic. The cost is encoding time and narrow support. Use it for web delivery, and keep the lossless original as your master rather than treating the AVIF as an archive copy.

TIFF can hold several images in one file and can use any of a number of internal compression schemes. Each is unpacked in turn, so a multi-page scan produces one output per page rather than a single merged image.

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