JPG to PNG
Convert JPG to PNG and keep a lossless copy.
Never uploadedJPG has no transparency, so pick the colour that replaces it. Usually much smaller for photographs.
PNG to JPG
JPG, PNG or WebP. Nothing is uploaded - this runs in your browser.
Processed in your browser - the file is not uploaded.
Set the JPG quality, and the colour that replaces any transparency.
Typically far smaller than the PNG, especially for photographs.
JPG has no transparency, so transparent pixels must become a solid colour. White is the default; pick any colour if your image will sit on a coloured background.
For photographs, often 80-90% smaller. For screenshots and flat graphics the saving is smaller and the text may soften - PNG is usually the better choice there.
No. JPG is lossy, so converting back to PNG preserves the compressed result, not the original. Keep your PNG if you may need it again.
JPG compresses by discarding fine high-contrast detail, which is exactly what text is made of. Raise the quality, or keep images with text as PNG.
Convert PNG to JPG locally in your browser, choosing both the output quality and the colour that replaces transparency - JPG cannot store an alpha channel, so transparent pixels have to become something, and white is rarely the right answer when the image will sit on a coloured background. For photographs the saving is dramatic, often 80-90%. For screenshots or anything containing text, be careful: JPG compresses away exactly the sharp high-contrast detail that makes text legible.
The last couple are from other categories - there are 81 tools here in total.
Convert JPG to PNG and keep a lossless copy.
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