Format A → Format B

Convert a file format in your browser.

FileConvertMage turns one format into another. Your file is processed in your browser and is not uploaded to FileConvertMage. These first converters cover the JPEG, PNG, and still WebP pairs that native browsers can do honestly.

This is not an image resizer, compressor, or cropper. It is not a universal converter for every format name on the internet. Unsupported files are rejected instead of being promised.

Compatibility

Turn a file your destination rejects into a format it will take.

PNG to JPG
Turn a PNG into a JPEG that forms, printers, and older apps will accept. Transparent pixels cannot survive.
JPG to PNG
Turn a JPEG into a PNG when a tool asks for PNG. This does not restore detail JPEG already discarded.
WebP to JPG
Undo a saved WebP into a JPEG. Animated files are refused so a still frame is not created silently.
WebP to PNG
Undo a still WebP into PNG when you need a widely accepted graphic that can keep alpha.

Web delivery

Create WebP for modern pages without pretending the conversion is lossless.

JPG to WebP
Create a WebP from a JPEG for modern pages. This is a format change, not a same-format compressor.
PNG to WebP
Create a WebP from a PNG graphic. Alpha can be kept. This is not lossless WebP.

6 public converters. Work stays on this device.