JPEG Converter
Convert any image to JPEG in bulk, with a live before/after file size comparison, entirely inside your browser.
Why convert to JPEG?
JPEG remains the most universally supported image format and typically produces the smallest files for photos among widely-supported formats. Converting to JPEG is useful when a platform requires it specifically, or when file size for a photo matters more than transparency or perfect pixel accuracy.
JPEG doesn't support transparency, so transparent areas in the source image are filled with white in the output.
GuideHow to use it
Features & benefits
Why this runs entirely in your browser
The conversion uses the browser's own Canvas API to redraw and re-encode the image locally, so the original file never leaves the device — no upload, no server-side processing.
Common uses
Meeting a platform's requirement for JPEG uploads, shrinking a WebP or PNG image for compatibility with older software, or preparing a photo for print or email.
Frequently asked questions
A few things people usually want to know before trusting the numbers.
JPEG doesn't support transparency, so any transparent pixels in the source image are filled with white in the converted file.
No, this tool captures a single static frame — animated output isn't supported.
Nothing — they're the same format. JPG is just the three-letter file extension used on some older systems.
85-95% quality is a good default that keeps files small while staying visually close to the original.
No. All conversion happens locally in your browser. Nothing uploaded here is sent to a server, stored, or shared.