Marketplace & product listings
Compress JPEG to 500 KB
Preset and ready: drop a file and the output lands under 500 KB as JPEG — processed entirely in your browser.
Drop your image here or browse
JPEG, PNG, WebP — everything stays on your device
Why this exact limit matters
Five hundred kilobytes of JPEG is the workhorse budget of e-commerce photography: platforms that allow it want zoomable, croppable product images, and 500 KB pays for real resolution without hosting camera originals. The interesting tension at this level is pixels versus quality — a 24 MP frame spends the whole budget at quality 12, while a display-sized frame reaches quality 90.
A fixed target turns bulk image preparation into a repeatable step: same ceiling, every file, no per-image editing. 500 KB is a generous limit that still catches full-size phone photos, and this page is preset to exactly that ceiling.
How to compress to 500 KB
- Drop your image into the box above — it stays on your device.
- Confirm the target: under 500 KB as JPEG.
- The MozJPEG encoder searches its quality range so the JPEG output lands just under your limit. Dimensions are left at their original size unless the target demands otherwise.
- Preview the result, compare it with the original if you want, and download — the filename carries its actual size.
Tip: For product photos, fill in the marketplace's recommended pixel dimensions along with the size limit — meeting both at once is what the dual-constraint input is for.
Measured: a camera original at the 500 KB line
A real 3.2 MB, 6000×4000 JPEG against a bare 500 KB ceiling, every pixel kept:
Source file
3.2 MB
6000×4000, 24 MP
Output
469.3 KB
7× smaller
Quality setting
q12
the 24 MP price
Resolution
6000×4000
every pixel kept
Quality 12 over 24 megapixels keeps the file croppable and zoom-deep — soft up close, structurally complete. The same ceiling over a 1067×1280 display frame holds quality 90. Both are "500 KB JPEG"; they are simply different products. Pick based on whether your platform crops or displays.
Frequently asked questions
Marketplace zoom — do I need full resolution for it?
Zoom views magnify to roughly 2× display size, so a 1500–2000 pixel frame covers them. Full 6000-pixel frames matter when the platform re-crops or you expect print reuse, not for zoom alone.
Why does JPEG beat PNG for product photos?
Photographic content is exactly what JPEG’s transform encodes efficiently — PNG’s lossless model typically needs several times the bytes for the same photo. Reserve PNG for logos, screenshots and cut-outs with sharp edges.
Should I upload 500 KB files or let the platform compress?
Compress it yourself. Platform-side recompression is a black box applied on top of whatever you gave it; controlling the encode means the 500 KB version is the best possible 500 KB version, not the second-generation one.
Can I keep a transparent background for my product image?
JPEG has no transparency — for cut-out products use the WebP or PNG output, which preserves the alpha channel. For plain-white studio shots, JPEG reaches the smallest sizes.
Why JPEG and not another format for my upload?
JPEG is the most universally accepted image format on upload forms and gives the smallest files for photographs. If your destination accepts only "images", JPEG is the safe choice.
What happens to my image when I close the tab?
It is discarded from memory. Nothing was transmitted and nothing was stored, so there is nothing to delete.