Convert AVIF to WebP — Reach More Devices Instantly

Will the WebP file be smaller than the AVIF?

Usually not — AVIF is generally the more space-efficient of the two, often producing smaller files than WebP at equivalent visual quality. Converting AVIF to WebP typically means the file stays roughly the same size or grows slightly, especially since the source AVIF is usually already lossy-compressed and WebP's re-encoding is a second pass on top of that. The reason to make this conversion isn't to save space — it's compatibility with platforms and tools that support WebP but not AVIF.

• AVIF is generally more space-efficient than WebP at equal quality
• Expect a similar or slightly larger file after converting to WebP
• Re-encoding an already-lossy AVIF adds a small second pass of compression
• The benefit of converting is compatibility, not smaller files

Why convert to WebP if AVIF is the more efficient format?

Because WebP has had broader, longer-established support across browsers, CMS platforms, image editors, and plugins, while AVIF support — though growing fast — is still newer and occasionally inconsistent in older software, some email clients, and certain CMS image pipelines. If a platform's upload system, plugin, or theme doesn't recognize AVIF but does handle WebP, converting is the practical fix, even though you're moving from a more efficient format to a slightly less efficient one.

• WebP has a longer track record of support across browsers and CMS tools
• Some plugins, themes, and email clients still don't recognize AVIF
• Convert when a specific platform requires WebP rather than AVIF
• For new projects with full control over delivery, AVIF remains the more efficient choice

Should I serve WebP or AVIF on my website?

If you can, serve AVIF to browsers that support it and WebP as the fallback — not the other way around — since AVIF is typically the smaller file. Use the HTML <picture> element with an AVIF <source> first, a WebP <source> second, and a JPG/PNG <img> as the final fallback for very old browsers. This gives every visitor the smallest file their browser can handle without you maintaining separate sets of images manually.

• <picture> with AVIF first, WebP second, JPG/PNG last covers nearly all browsers
• AVIF source first means modern browsers get the smallest file
• WebP fallback covers browsers/tools that don't yet support AVIF
• CDNs like Cloudflare can often auto-negotiate this without manual conversion

Will transparency and animation survive converting AVIF to WebP?

Yes — WebP supports both a full alpha channel for transparency and animated frames, so logos with transparent backgrounds and animated AVIF sequences both convert cleanly. The visual result should match your AVIF closely; just double-check semi-transparent edges (like soft shadows) after conversion, as different encoders can handle partial transparency slightly differently.

• WebP supports full alpha transparency, including semi-transparent pixels
• Animated AVIF converts to animated WebP, both well-supported formats
• Check soft/semi-transparent edges after conversion for any encoder differences
• Logos and icons with transparent backgrounds typically convert without issues