JFIF – JPEG File Interchange Format
JFIF is a JPEG image with a .jfif extension, often produced when saving pictures from a browser. The image data is ordinary JPEG, so it converts to any other image format without extra loss.
More JFIF conversionsDrop your JFIF files here
or click to choose JFIF files · up to 95MB each
How to convert JFIF to AVIF
- Choose your files. Click Select File or drag your JFIF files into the upload box. You can add many at once.
- Pick the settings. AVIF is already selected as the output format. Adjust Quality and Max dimension if you want smaller files.
- Download. Each file appears in the list when it is ready. Download them one by one, or all together with Download all.
AVIF – AV1 Image File Format
AVIF is a modern image format built on the AV1 video codec. It supports transparency and high dynamic range, and it often produces the smallest files of any web image format at a given quality. Encoding is slower than for JPG or WebP, and older browsers and some apps cannot open it.
More AVIF conversionsJFIF vs AVIF
| Feature | JFIF | AVIF |
|---|---|---|
| Full name | JPEG File Interchange Format | AV1 Image File Format |
| Compression | Lossy | Lossy and lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Introduced | 1992 | 2019 |
| Developed by | Joint Photographic Experts Group | Alliance for Open Media |
| Best for | Photographs (same data as JPG) | The smallest web images in modern browsers |
Converting JFIF to AVIF
- AVIF files are usually smaller than JFIF files at similar visual quality, so converting JFIF to AVIF typically saves storage and speeds up page loads.
- AVIF often gives the smallest files, but older browsers and some apps cannot open it, and it takes longer to create.
- JFIF files contain ordinary JPEG data, so they are read directly without any extra loss.
Frequently asked questions
How do I convert JFIF to AVIF?
Click Select File or drop your JFIF file onto the upload box. Pick the quality and maximum size, and the converted AVIF appears in the list below with a download button. You can add many files at once and download them together as a ZIP.
Is it really free?
Yes. There is no sign-up and no watermark. To keep the service available for everyone there is a 95MB limit per file and a cap on how many files one connection can process in a short period.
Are my files stored?
Your upload is used only to make the converted file. Images are processed in memory; other files are written to a private temporary folder that is deleted as soon as the conversion finishes. Nothing is kept after the result has been sent back.
Will quality drop?
For images, a little, by design: the image is re-encoded at the Quality you choose (default 75%). Audio and video are re-encoded with high-quality settings; documents keep their text and layout as far as the target format allows. Converting never restores detail that is already missing from the original.
How this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.