Image Format Converter
Image Format Converter is a free image tool that runs directly in your browser with no account required.
About this tool
This converter changes an image from one format to another, such as PNG to WebP or AVIF to JPG, without installing software or sending the file anywhere. You can resize during conversion and control what happens to transparent areas, which JPG cannot represent. The result panel reports dimensions, file size change, and how transparency was handled.
How to use
- Choose your source file under Image file; PNG, JPG, WebP, and AVIF are accepted.
- Pick the target Format, and set the Quality for lossy formats.
- Optionally enter an Output width or Output height, keeping Keep original ratio checked to preserve proportions.
- If converting to JPG, set the JPG background color used to fill transparent areas, then download the converted file.
Frequently asked questions
Is the conversion done locally?
Yes. The file is decoded and re-encoded in your browser with the canvas API and is never uploaded to a server.
What happens to transparency when converting to JPG?
JPG does not support transparency, so transparent pixels are flattened onto the JPG background color you specify (white by default). Converting to PNG, WebP, or AVIF preserves transparency when the source has it.
Does converting to PNG lose quality?
No. PNG is lossless, and the result panel marks its quality as Lossless. For JPG, WebP, and AVIF, the Quality value controls the compression level, with 90 as the default.
Can I convert AVIF images?
You can open AVIF files in any modern browser that decodes them. Exporting to AVIF depends on your browser's encoder; if it is not supported, choose WebP for similar compression.
Can I resize while converting?
Yes. Enter an Output width or Output height and the other dimension is calculated automatically while Keep original ratio is checked. Leave both blank to keep the original dimensions.
Is metadata preserved in the converted file?
No. Canvas re-encoding produces a clean file without the source's EXIF metadata, which is often preferable when sharing images publicly.