AVIF Converter
Convert your images to and from the modern, highly efficient AVIF format, with quality control
Drag and drop your image here
or click to choose an image from your device (JPG/PNG/WEBP/AVIF)
Supported formats: JPG, PNG, WEBP, AVIF — up to 50MB.
About this tool
Fastols' AVIF Converter lets you convert your images (JPG, PNG, WEBP) to the modern AVIF format, which delivers high quality at a much smaller file size — ideal for faster website loading. You can also convert existing AVIF images back to regular JPG or PNG.
Choose the conversion direction you need, adjust the quality with the slider, and download the result right away.
How to use it
- 1 Upload your image (JPG/PNG/WEBP/AVIF)
- 2 Choose the conversion direction and adjust quality if converting to AVIF
- 3 Click "Convert & Download" to save the result
Frequently asked questions
Is AVIF Converter completely free?
Yes, the AVIF Converter tool on Fastols is 100% free with no usage limits, and you don't need to create an account.
Is my data and files safe?
Your privacy matters to us — all processing happens entirely inside your browser, no data is shared with any third party, and your images are never uploaded to a server.
Do I need to install anything?
No, the AVIF Converter tool is ready to use instantly and works on any device — computer, phone, or tablet — with nothing to install.
Does it work on mobile?
Yes, the tool is fully responsive and works smoothly on phones, tablets, and computers alike.