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AVIF to WebP — Convert AVIF Images to WebP in Your Browser

Convert AVIF images to WebP. Smaller than PNG, broader support than AVIF, runs entirely in your browser. No uploads, no accounts, no limits.

● LOCAL · EXIF NEVER UPLOADED0 network requests since page load

Drop your AVIF image here

or click to browse (max 50MB)

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Open the converter

AVIF and WebP are both modern image formats designed to replace the JPEG/PNG pair, and they have been competing on the same problem for years. The reason both exist is that neither format is a clean superset of the other: AVIF compresses photos about 20% smaller than WebP, but WebP has been in the wild for five years longer and is supported by every browser since 2020. Converting from AVIF to WebP is the move that buys you broader compatibility for a small size penalty, and the conversion is worth doing in the browser because the source AVIFs often come from a designer’s working folder or a recent export pipeline, not from a server you control.

The non-obvious decision is lossy versus lossless mode. Both options produce a valid WebP file, but the trade-offs are different in ways that matter. Lossy WebP at quality 80 is indistinguishable from the source AVIF on most photos and is roughly 60% smaller than lossless. Lossless WebP preserves every pixel exactly and is the right pick when the image will be edited further or when pixel-perfect comparison is part of a QA workflow. For a final hand-off that is read but not edited — a website hero, a product photo, a screenshot in a README — lossy is the right default.

For a final hand-off: if the audience is mixed (some old iOS, some old Windows), route the same source through AVIF-to-JPG instead — JPG is the only format that is universally supported across every browser since the late 1990s. If the file is going into a CMS that already optimizes images server-side, the conversion may be redundant; check the upload pipeline before adding a step. And if the source AVIF is animated, neither WebP nor JPG keeps the motion — use the GIF converter for that case.

How to use

Drop one or many AVIF files
Drag .avif files into the drop zone, or paste from clipboard. Batch conversion works; each file is processed independently and the queue shows progress per item.
Choose lossy or lossless WebP
Lossy (default) is smaller and indistinguishable from the source for most photos at quality 80. Lossless preserves every pixel for editing; the file is roughly twice the size of lossy.
Download the WebPs
Each file converts in under a second on a modern device. Downloads are individual by default; switch to zip mode for batches above a dozen files.

Frequently asked

Why convert from AVIF to WebP if AVIF is newer?

AVIF is newer and compresses 20% better than WebP on average, but WebP support is five years older. If the destination is a CMS, an email client, or a chat app, WebP is the safer pick — it has been widely supported since 2020.

Does WebP keep transparency?

Yes — WebP has an 8-bit alpha channel, same as PNG and AVIF. Transparent pixels in the source round-trip without recompression when lossless mode is selected.

Is the output visually identical to the AVIF?

At lossy quality 80, the difference is below the threshold of perceptual diff tools on most photographs. Lossless mode is bit-exact for the pixels but the file is much larger.

Will older Safari versions open the WebP?

Safari 14+ on macOS Big Sur and iOS 14+ open WebP inline. Versions 12 and 13 cannot. If the audience includes those versions, fall back to JPG instead.

Does WebP support animation?

WebP supports animation, but this converter exports static WebP only. If the source AVIF is animated, only the first frame is saved and the motion is dropped.

Limitations

Static output onlyAnimated AVIFs export as a static WebP of the first frame. There is no animated WebP output and no way to keep motion in this tool. Use the GIF converter for moving images.
Slightly larger than AVIF sourceWebP is roughly 20% larger than AVIF at the same perceptual quality. The output is always larger than the input — the gain is compatibility, not compression ratio.
iOS 12/13 cannot decodeWebP requires Safari 14 or later on Apple platforms. Older iPhones and iPads will see a broken-image icon. For maximum reach, route the same source through the JPG converter.

Platform notes

macOS: Quick Look and Preview on macOS Big Sur (11) and later open WebP natively. Earlier versions need a Quick Look plugin. Safari 14+ renders them in browsers.
Windows: Microsoft Edge and Chrome support WebP since 2014. The Windows 11 Photos app opens them; Windows 10's older Photos app may need the Webp Image Extension from the Microsoft Store.
Linux: Most distros include libwebp in their default image stack. If a viewer fails to open the output, install webp-pixbuf-loader or the equivalent plugin for your desktop environment.
iOS: iOS 14+ Safari and Photos accept WebP. The Files app preview shows them correctly. iOS 12/13 users cannot view WebP at all — the JPG path is the only option for those devices.
Android: Chrome on Android has supported WebP since 2014. Stock gallery apps on Samsung (One UI 2+) and Pixel (Android 10+) decode WebP without extra setup; older OEM galleries vary.