AVIF to WebP Converter
Convert AVIF images to WebP format free, in your browser — no upload, no sign-up.
Image Converter
Convert images between PNG, JPEG, WebP, AVIF, TIFF, GIF, and SVG formats
What is this?
Image Converter is a free, browser-based tool that converts image files between popular formats — PNG, JPEG, WebP, AVIF, TIFF, and GIF. SVG files can also be rasterised to any of those formats. No software to install and no sign-up required.
How to use
- Upload: Click the file picker and select your image (up to 3 MB).
- Choose formats: Select the source format and your desired output format, then adjust quality if needed.
- Convert & download: Click Run. A preview appears immediately and you can download the converted file.
FAQ
- What is the maximum file size?
- 3 MB. This is set by the Vercel free tier request body limit. For larger images, clone the repo and run locally — there is no size cap when self-hosted.
- Does conversion affect image quality?
- Lossless formats (PNG, TIFF) preserve every pixel. Lossy formats (JPEG, WebP, AVIF) use the quality slider — 80 is a good default that balances file size and visual fidelity.
- Why convert to WebP or AVIF?
- WebP is 25–35% smaller than JPEG/PNG at equivalent quality and is supported by all modern browsers. AVIF is 50% smaller still but takes longer to encode. Both are great for web delivery.
Why convert AVIF to WebP?
Converting AVIF to WebP lets you use the image in contexts that require the WebP format, whether for compatibility, file-size, or workflow reasons.
- –Web optimisation — replace AVIF assets on your website with WebP to improve page load speed and Core Web Vitals scores.
- –Batch conversion of AVIF files in a CI pipeline using the REST API: POST /api/image-converter.
- –Quick one-off conversion without installing software — everything runs in your browser.
About AVIF and WebP
AVIF is based on the AV1 video codec and achieves up to 50% better compression than JPEG. It is supported by Chrome, Firefox, and Safari.
WebP is a modern format developed by Google. It is 25–35% smaller than JPEG or PNG at equivalent quality and is supported by all modern browsers.
Quality note: Both formats use lossy compression. Converting between them introduces a second round of compression, which can slightly reduce quality. Where possible, convert from the original lossless source rather than from a previously compressed file.
How to convert AVIF to WebP
- 1.Drag your AVIF file (or files) onto the converter above, or click to browse.
- 2.Confirm the output format is set to WebP. Adjust quality or size options if needed.
- 3.Click Convert. The conversion runs in your browser — your images are never uploaded.
- 4.Download the WebP file. For multiple files, a ZIP is downloaded automatically.
Frequently asked questions
- Is it safe to convert AVIF to WebP in the browser?
- Yes. The conversion runs entirely in your browser using the Canvas API — your images are not uploaded to any server. No data leaves your device.
- Does converting AVIF to WebP reduce quality?
- Converting to WebP uses lossy compression, so some quality reduction is possible. The tool uses high-quality settings by default. For archival use, keep the original AVIF file.
- Can I convert multiple files at once?
- The web UI supports multiple files at once — drag and drop a batch of AVIF images and download them all as WebP. The REST API also accepts individual files for automated batch workflows.
- How do I convert AVIF to WebP without software?
- Use this tool — no installation required. Drag your AVIF file onto the converter, select WebP as the output format, and click Convert. The result downloads automatically.