AVIF (AV1 Image File Format) and JPG (Joint Photographic Experts Group (JPEG)) are built for different jobs. AVIF is typically used for modern web delivery, while JPG is best for photos, social media, email attachments. Converting lets you open, share or upload your files wherever JPG is expected.
How to use the AVIF to JPG converter
- Add your AVIF filesClick “Choose Files” or drag and drop them into the box. You can add many files at once — or paste a file with Ctrl+V.
- Choose JPG and adjust settingsJPG is selected automatically. Optionally open Settings to change quality, size or background.
- Convert and downloadPress “Convert”. Your JPG files appear instantly — download them one by one or all together as a ZIP.
AVIF vs JPG
AVIF AV1 Image File Format
AVIF is a next-generation format based on the AV1 video codec. It compresses even better than WebP, but support in desktop software, older phones and many upload forms is still limited.
- Compression
- Lossy or lossless
- Features
- Supports transparency and HDR
- Origin
- 2019, Alliance for Open Media
- Best for
- Modern web delivery
JPG Joint Photographic Experts Group (JPEG)
JPG is the most widely supported photo format. It uses lossy compression that discards detail the eye barely notices, producing small files that open on every device, browser and app — ideal for photographs, less so for text or line art.
- Compression
- Lossy
- Features
- No transparency
- Origin
- 1992, JPEG committee
- Best for
- Photos, social media, email attachments
Why use ConvertMathly?
Files are processed on your device and never uploaded. Close the tab and they are gone.
No account, no daily cap, no queue and no watermark — convert as much as you want.
No waiting for uploads or downloads: results are ready as fast as your device can process them.
Windows, Mac, Linux, Chromebook, iPhone and Android — any modern browser, nothing to install.
Frequently asked questions
How do I convert AVIF to JPG?
Add your AVIF files above, make sure JPG is selected and press Convert. The JPG files are ready to download a few seconds later — no installation or account required.
Will converting AVIF to JPG reduce quality?
JPG uses lossy compression, but at the default 90% quality the difference is practically invisible. Raise the quality slider to 100% for maximum fidelity or lower it for smaller files.
What happens to transparent areas?
JPG does not support transparency, so transparent pixels are filled with a background color — white by default. You can choose any color in Settings.
Is there a file size or daily limit?
No. Since everything runs locally, there are no daily caps, queues or file size limits beyond what your device can handle.
Are my AVIF files uploaded to a server?
No. ConvertMathly converts files entirely inside your web browser using JavaScript and WebAssembly. Your files never leave your computer or phone, which makes it safe for private photos and documents.
Can I convert multiple AVIF files at once?
Yes — add as many files as you like. They are converted one after another and you can download everything in a single ZIP.