benchmark · WebP AVIF benchmark
This benchmark page gives a transparent reference model for comparing WebP and AVIF. Treat the numbers as guidance, not a guarantee for every image.
What the data suggests
| Sample type | JPEG baseline | WebP estimate | AVIF estimate | Best first test |
|---|---|---|---|---|
| Photo | 1.00 MB | 0.42-0.65 MB | 0.30-0.55 MB | WebP quality 78 |
| Screenshot | 1.00 MB | 0.35-0.70 MB | 0.32-0.68 MB | WebP or PNG depending on text sharpness |
| Illustration | 1.00 MB | 0.30-0.60 MB | 0.25-0.55 MB | WebP with transparency check |
The table is a reference model for planning tests, not a fixed promise. Real results depend on source dimensions, texture, noise, transparency, browser encoder and quality settings.
Use it to choose which output format to try first, then compress the actual image and compare visual quality.
If the publishing system accepts WebP, test it before JPEG for web pages. If the page is extremely performance-sensitive and AVIF is supported, compare AVIF next.
For forms, marketplaces or email clients, check accepted formats before choosing the smallest output.
They are benchmark-style reference ranges for content planning. Exact results should be tested with your actual images and browser.
A smaller file is useful only if the target browser, CMS, app or platform accepts the format and displays it correctly.
Updated September 4, 2026 · Source checked: 2026-09-04
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