Convert an image
Change format and quality without uploading the picture to anyone.
Your file
Drop a file here, or click to choose
It stays on this device. Nothing is sent anywhere.
Settings
Which format
- JPEG: photographs. Small files, no transparency, and quality degrades a little every time it is re-saved.
- PNG: screenshots, logos, anything with sharp edges, text or transparency. Lossless, so it never degrades.
- WebP: the web. Roughly 25 to 35% smaller than JPEG at matching quality, with transparency support. Every current browser reads it.
- BMP: uncompressed. Only when some old software demands it.
- TIFF: print and archival workflows.
Transparency and JPEG
JPEG cannot store transparency. Converting a transparent PNG to JPEG has to put something behind it, so the tool composites onto white by default. Untick that and transparent areas come out black instead.
Common questions
Does converting JPEG to PNG improve quality?
No. It stops any further loss from re-saving, but the compression artefacts already in the file stay exactly as they are, in a much larger file.
Can it read HEIC photos from my iPhone?
No. HEIC is not in this build. On the iPhone, set Camera to Most Compatible to get JPEGs instead.
Can I convert a batch at once?
Not yet, one image per run in this tool.