Optimize a JPG: smaller with no visible change
Re-encoded with a sharper encoder at quality 85, typically 20 to 30 percent lighter, same look.
Runs in your browser. Your file never leaves your computer.
- Typical saving20 to 30 percent
- Visible changeNone at viewing size
- StaysA JPG, same dimensions
- Quality85, adjustable
Most JPGs carry avoidable weight: encoded hastily by cameras and export tools that favoured speed over economy. Optimizing re-encodes with a meticulous encoder at quality 85, typically saving 20 to 30 percent with no difference at viewing size, same dimensions, same format, just packed properly. Technically a re-encode, so already heavily-crunched files gain less and archival masters deserve their originals kept. Web images, listings and email photos are the sweet spot. Local, as always.
Questions
Where do the savings come from?
Careful entropy coding and progressive encoding that quick exporters skip; the encoder spends more effort finding a tighter representation of the same picture.
Will optimizing repeatedly keep shrinking files?
No, one pass takes the slack; further passes trade real quality for little. Optimize once from the best source you have.
Batch a folder?
Drop multiple files; batch conversion is a Pro feature.
Related conversions
- JPG to WebPThe standard web upgrade: same visible picture, meaningfully smaller file, supported by every current browser.
- JPG to PNGA lossless container for further editing. Fair warning: photos get big, and no JPG artifacts are healed.
- JPG to AVIFRoughly half the bytes of the JPG at matching visible quality. Worth it where load time is money.
- JPG to PDFPortals, expense systems and clerks ask for documents, not images. One page per photo, assembled locally.
Part of convert images in your browser. Every other conversion is on the conversions index.