AVIF to WEBP Converter
Convert AVIF files (released 2019 (AOMedia), Lossless + Lossy (AV1-based)) to WebP (Lossless + Lossy (your pick), typically 25–35% smaller than equivalent JPEG/PNG). Runs in your browser — no upload, no signup.
Based on 12,431+ conversions delivered
Teams convert AVIF to WEBP mostly for compatibility: WebP fits Web production where every kilobyte counts and runs on All modern browsers (95%+ since 2020), while AVIF earns its place for Bandwidth-critical pages with modern audiences. Standardising on WebP across a pipeline — uploads, a CMS, a design system — removes the friction of mixed formats downstream. In our sample set, WEBP files ran about 36% larger than the AVIF source. This converter handles a single file or a large batch the same way, entirely in your browser with no upload. The sections below lay out the format trade-offs, the settings that matter, and the situations where a different target would serve you better.
Looking to programmatically convert AVIF to WEBP?
Same engine, available as a JSON API. Drop a file or URL via REST and get the converted output back — no browser, no UI, no rate limits on paid tiers.
Sub-second response on common pairs
Webhook delivery for batch jobs
100+ format pairs supported
AVIF vs WEBP — side-by-side
The numbers and capabilities at a glance, so you know what you're trading.
AVIF
- Year released
- 2019 (AOMedia)
- Compression
- Lossless + Lossy (AV1-based)
- Transparency
- Yes
- Animation
- Yes
- Browser support
- Modern browsers (~90% since 2023)
- Best for
- Bandwidth-critical pages with modern audiences
WebP
- Year released
- 2010 (Google)
- Compression
- Lossless + Lossy (your pick)
- Transparency
- Yes (alpha in both modes)
- Animation
- Yes
- Browser support
- All modern browsers (95%+ since 2020)
- Best for
- Web production where every kilobyte counts
Real AVIF → WEBP file sizes
We ran a fixed set of sample images through this exact converter so you can see the typical size impact before converting your own files.
| Sample image | AVIF size | WEBP size | Change |
|---|---|---|---|
| Photo | 17.4 KB | 22.3 KB | +28% larger |
| Screenshot / UI | 746 B | 722 B | -3% smaller |
| Logo / transparency | 2.2 KB | 4.7 KB | +112% larger |
Measured on a 256×256 sample set with this converter on 2026-05-28. Real-world files vary with resolution, colour and content.
Heads up before converting AVIF → WEBP
What changes — and what your conversion will cost — based on how AVIF and WebP differ.
Higher bit depth gets clipped
AVIF stores image data at a higher bit depth per channel than WebP encodes by default. Subtle gradients, HDR highlights, and 16-bit print sources collapse into the narrower 8-bit range — the difference is invisible in most photos, but banding shows up in skies, soft skin tones, and low-key shadows. If you need the precision (retouching, print, raw archive), keep the AVIF source and convert a copy.
Best practices for AVIF → WEBP
Concrete settings to pick before you convert AVIF to WebP.
- Always preview the WebP output before bulk-downloading — colour shifts, transparency surprises, and quality artifacts show up in the preview before they ship.
- Strip EXIF metadata if file size or privacy matters — camera GPS coordinates, timestamps, and serial numbers travel inside the image bytes by default.
- For photographic content, target a WebP quality between 80 and 85 — that's the sweet spot where most encoders stop showing visible artifacts and the file size curve flattens.
- Verify the alpha channel rendered as expected — premultiplied vs straight alpha and edge halos around antialiased pixels are the most common surprises when going to WebP.
- When converting to WebP (animated), confirm the frame timing matches your source — some encoders default to a fixed 100ms delay per frame instead of preserving the original timing.
- For web WebP delivery, encode in sRGB — wider colour spaces (Display P3, ProPhoto) render unpredictably across browsers and email clients.
When NOT to convert AVIF → WEBP
Honest cases where this conversion is the wrong call — pick a different format or keep your AVIF source.
Skip if your audience uses legacy browsers
WebP doesn't render on every old browser, email client, or built-in OS viewer. If your traffic includes IE11, legacy Outlook, or older Android WebViews, stay on AVIF (or a universal format like JPEG/PNG) — or ship WebP alongside a fallback via the HTML <picture> element.
Skip if the file is bound for print
WebP is a delivery-grade web format. Print pipelines (offset, large-format, packaging) expect TIFF, PDF, or high-bit-depth PNG with embedded ICC profiles and a CMYK option. Converting AVIF to WebP for a print job will likely fail prepress checks — keep the original or convert to a print-friendly format instead.
The importance of a good image conversion
Why getting AVIF → WEBP right matters more than you think.
Frequently asked
The basics everyone asks before dropping a file.
Convert AVIF to other formats