Compress JPG privately, without uploading it
A JPG is rarely just a picture. Phone photos carry the exact place and time they were taken, and the photo itself might show your home, your children or a document. Krisox compresses JPGs inside your browser tab, right in the upload form, so the only place your photo goes is the website you chose.
Why it matters for JPG
Most online compressors and converters work by uploading your file to their servers, processing it there and sending a copy back. While it's there, it's covered by their privacy policy and retention rules, not yours, and it may pass through other companies' storage and networks.
Photos from phones and cameras also contain EXIF data: the GPS location, the time, the device. A compressor site receives all of it along with the photo.
How Krisox compresses JPG
- Choose a JPG in any upload form, as you normally would.
- Krisox shows the size it will be at each level before anything is uploaded.
- Click "Upload compressed", or the download icon to keep a copy.
The three levels
- Extreme: at most 1,600 pixels on the longest side, strong compression. The smallest files.
- Recommended: at most 2,560 pixels, balanced compression. Sharp on any screen.
- Light: at most 4,096 pixels, gentle compression. The most detail, smaller savings.
What changes in the photo
- EXIF data, including GPS location, is removed as the photo is re-encoded.
- Rotation is applied first, so portrait photos stay upright.
- If re-encoding wouldn't make the photo smaller, Krisox keeps the original.
- JPGs under 300 KB are left alone by default; you can change that in Krisox settings.
Convert JPG to another format (Pro)
If a site only accepts one of these, Krisox Pro converts automatically and says so.
- JPG to PNG: lossless from here on, but usually larger. Useful when a site only accepts PNG.
- JPG to WebP: typically smaller than JPG at the same quality.
- JPG to PDF: a one-page PDF with the photo's own proportions, for forms that only take PDFs.
Check it yourself
- Open Chrome's developer tools (Cmd+Option+I on a Mac, Ctrl+Shift+I on Windows) and choose the Network tab.
- Upload a file on any site and let Krisox compress or convert it.
- You'll see the website's own upload, and no request from Krisox carrying your file: Krisox never sends files anywhere.
Without Krisox
- Mac: open the photo in Preview, choose Tools → Adjust Size, and save.
- Windows: in the Photos app, use "Resize image".
- iPhone Mail offers to send large photos at a smaller size.
Questions
Is JPG and JPEG the same thing?
Yes: two spellings of the same format. Krisox handles both.
Will my photo look worse?
At Recommended it stays sharp on any screen; for printing, use Light, which keeps up to 4,096 pixels. Krisox shows each size before you choose, and you can download a copy to check.
Is it free?
Compressing one file at a time is free. Converting between formats, and compressing several files at once, are part of Krisox Pro.
Krisox is a browser extension for Chrome. Compressing one file at a time is free; converting formats and compressing several files at once are part of Krisox Pro.