Load an image to begin.
This converter changes an image between JPG, PNG and WebP without installing anything. The source format is detected from the file and shown along with its dimensions and size, then you pick a target. JPG and WebP get a quality slider because both are lossy; PNG does not, since PNG compression is lossless and browsers ignore any quality value passed to it. The result appears with a size comparison so you can see exactly what the change costs or saves.
Format choice matters more than most settings. WebP is usually 25 to 35 percent smaller than JPG at similar visual quality and it supports transparency, which makes it the strongest option for web pages. PNG suits logos, screenshots and flat graphics with sharp edges. JPG has no alpha channel, so transparent sources need a background colour; the white fill option handles that. The tool also checks whether your browser can encode WebP at all.
How to use the Image Format Converter
- Choose an image or drag one onto the drop area. The detected source format, dimensions and file size appear straight away.
- Pick JPG, PNG or WebP as the target. A sensible target is preselected based on the source.
- Set the quality slider for JPG or WebP, and leave the white fill option on if a transparent image is heading to JPG.
- Press Convert image, review the size comparison, then press Download converted to save the file.
Frequently asked questions
Does converting go through a server?
No. The image is decoded and re-encoded by your own browser using canvas. Nothing is uploaded, nothing is cached remotely and no account is needed. The page works offline once it has loaded, which is why there is a 20 MB size limit on very large files.
Why does my browser say it cannot encode WebP?
The tool tests canvas.toDataURL with the WebP type and checks what comes back. A few older browsers can display WebP but not write it. When that test fails the WebP target is flagged, and you should convert to JPG or PNG instead.
Will converting PNG to JPG lose quality?
Yes. JPG uses lossy compression, so fine detail and sharp edges soften, and text or line art can pick up visible halos. Transparency is lost too and becomes a solid colour. For logos, screenshots and flat graphics, keep PNG or use WebP.
Is metadata such as EXIF preserved?
No. Canvas works with decoded pixel data only, so the converted file contains no EXIF at all. Camera model, capture date, GPS coordinates and the orientation flag are all removed. That protects privacy, but check that phone photos are still the right way up.