7 formats · Alpha preserved · Secure
Convert your image to AVIF
AVIF is the most efficient modern format: the same frame weighs noticeably less than in WebP or JPEG. Convert images to AVIF for the fastest possible page loads.
Upload up to 20 images at once with a total size up to 30 MB, completely free and without signing up. Create an account or to convert up to 30 images with a total size up to 50 MB.
Drop files here
individual images or a ZIP archive with images
JPGPNGWebPAVIFHEICGIFTIFF
All formats are processed on the server and deleted automatically after conversion. JPG, PNG, WebP, AVIF, TIFF, GIF, HEIC and HEIF are supported.
Choose format
applies to all files
Files are deleted automatically after 1 hourSecure processingNo registration required
How it works
- 1
Upload your images or a ZIP archive.
- 2
Pick the target format — Sevio suggests the best one.
- 3
Download the result file by file or as a single ZIP.
Frequently asked questions
For the web — WebP (best balance of size and quality) or AVIF (maximum compression). JPEG — universal compatibility for photos. PNG — when you need transparency or a lossless format. Each format has a short hint right in the picker.
Input: JPG (JPEG), PNG, WebP, AVIF, HEIC, HEIF, GIF and TIFF. Output: WebP, AVIF, JPEG, PNG, TIFF and GIF. HEIC/HEIF are handy to convert to JPEG for compatibility with all devices.
WebP, AVIF and PNG keep transparency (alpha channel); when converting to JPEG, transparent areas are filled with a background since JPEG doesn't support it. Quality stays close to the original, but conversion can't restore detail already lost in the source.