How to Convert TIFF to AVIF: Maximum Compression From Lossless Sources

You have the best possible source: a lossless TIFF file. And you want the best possible output: a tiny AVIF file for the web.

This is the dream conversion. Starting from perfect quality and compressing it with the most advanced format available. The results are stunning. A 30 MB TIFF becomes a 200 KB AVIF that looks nearly identical.

How Much Space Does AVIF Save Over TIFF?

More than any other conversion you can make.

TIFF size	AVIF size (80% quality)	Reduction
10 MB	80-150 KB	98-99%
30 MB	150-300 KB	99%
50 MB	200-400 KB	99%

That's not a typo. A 50 MB TIFF becomes a 300 KB AVIF. You could store 150 AVIF images in the same space as one TIFF.

This matters most for:

• Websites with many high-quality images. Photography portfolios, real estate listings, product catalogs. Every KB saved multiplies across hundreds of images.
• Mobile delivery. Users on cellular connections download images faster. Your page loads in seconds instead of dragging.
• Storage costs. Hosting companies charge by the GB. Storing images as AVIF instead of TIFF cuts your storage bill dramatically.
• Core Web Vitals. Google uses page speed as a ranking factor. Smaller images mean better scores and higher search rankings.

Why Is AVIF Better Than WebP or JPG for This?

When you're starting from a lossless TIFF, you want the best compressor available. That's AVIF.

AVIF vs JPG from TIFF: AVIF files are 40-50% smaller than JPG at the same visual quality. A TIFF photo that becomes a 500 KB JPG would be about 250 KB as AVIF.

AVIF vs WebP from TIFF: AVIF files are 20-30% smaller than WebP. A TIFF that becomes 350 KB as WebP would be about 250 KB as AVIF.

AVIF also handles certain image features better than both alternatives. Smooth gradients compress without banding. Shadow details are preserved. Fine textures stay sharp at lower file sizes.

The only trade-off is encoding speed. AVIF takes longer to create than JPG or WebP. For a batch of 100 TIFF files, AVIF conversion might take 2-3 times longer. But you only convert once. The speed benefit on every page load after that is worth the wait.

How Do You Convert TIFF to AVIF?

ConvertIMG converts TIFF to AVIF right in your browser. Drop your TIFF files in, select AVIF, set your quality level, and download.

The conversion runs locally on your device. No files leave your computer. This is important when working with professional photos or client images.

For quality settings:

85-90% for hero images, portfolio pieces, and product close-ups. These are the images people look at closely. The files are still 98% smaller than the TIFF.

75-80% for blog images, gallery thumbnails, and general web content. Excellent quality at extremely small sizes. This is the sweet spot for most uses.

65-75% for background images, decorative graphics, and small thumbnails. The compression is more aggressive but files are incredibly small.

Since TIFF is lossless, you're giving AVIF the best possible source material. The encoder has clean, uncompressed data to work with. This produces better results than converting from an already-compressed JPG or WebP.

What Features Does TIFF Have That AVIF Preserves?

TIFF is a feature-rich format. Some of those features carry over to AVIF. Others don't.

Preserved:

• High color accuracy (AVIF supports wide color gamut)
• HDR content (AVIF supports HDR natively)
• Transparency (alpha channels transfer cleanly)
• Fine detail and texture

Not preserved:

• CMYK color space (AVIF uses RGB; colors may shift slightly)
• 16-bit depth (AVIF typically outputs 8-bit or 10-bit)
• Multiple layers (AVIF is a single-layer format)
• Multiple pages (each page converts separately)
• Embedded metadata (some may be stripped)

For web delivery, none of the lost features matter. They're all print and archival features that have no effect on how the image appears in a browser.

Should You Keep the TIFF Originals?

Always. The TIFF is your master copy.

If you ever need to create a different version (different size, different format, different quality), start from the TIFF. Converting from AVIF to another format means double compression and quality loss.

Think of it as a simple rule: TIFF is your archive. AVIF is your delivery format. One for storage. One for speed.

For a complete comparison of all image formats, see our image format guide.

Ready to Convert TIFF to AVIF?

Get the smallest possible web images from your professional TIFFs. ConvertIMG converts TIFF to AVIF in seconds. Free, private, works in your browser. Drop your files in and download.