Compress JPEG to 500 KB
Reduce a JPEG to 500 KB or less in your browser. Free, private, no sign-up.
How to use
- Add one or more images with the button or by dragging them in.
- Adjust quality, target size, width or format if you need to.
- Press Compress, then download each file or all of them as a ZIP.
Frequently asked questions
Is this tool free?
Yes. There are no limits, watermarks or accounts.
Are my images uploaded?
No. Compression happens in your browser using the Canvas API, so files stay on your device.
Will the image lose quality?
JPEG is lossy, but at quality 70 to 85 most photos look the same to the eye while shrinking a lot.
When you need a file under 500 KB
Upload forms, email limits and page-speed budgets often come with a hard size cap. This page is preset to 500 KB: drop in a photo and the compressor searches for the highest quality that fits, shrinking dimensions only if quality alone is not enough. The result is the best-looking image that still passes the limit.
How big can a 500 KB image be?
File size depends on content as much as pixels. A plain background compresses far better than leaves or gravel. As a rough guide for a 4:3 photo at 500 KB:
| Quality | Approx. width | Use |
|---|---|---|
| 85 | ~1652 px | Sharp detail, larger file |
| 75 | ~2065 px | Balanced default |
| 60 | ~2581 px | Small previews and thumbnails |
These figures are estimates. The tool always reports the exact size of every file it produces.
Tips for hitting 500 KB cleanly
Crop to the subject first, so pixels are spent where they matter. Avoid re-compressing a file that has already been compressed, because artefacts stack. If a portal also lists a pixel range, set the maximum width to match it before compressing. Aim slightly below the limit, since some systems count 1 KB as 1000 bytes and others as 1024.
Guides
- Batch Compressing Photos for YouTube Thumbnails
When you have dozens of images, consistency matters as much as size.
- Why Your Images Are Too Large for SMS and MMS Messages
If an upload keeps failing, the image is usually larger than it needs to be in more ways than one.
- How to Get a JPEG Under 300 KB for Pinterest Pins
Hitting an exact size limit is easier with a target-size compressor.
- Does Compression Affect Image Quality for Discord Chats?
Yes, but how much depends on your settings.
- Fixing Blurry Images After Compressing for iPhone Photos
Blurriness after compression usually comes from resizing too far, not from JPEG itself.
- Choosing Image Dimensions for WhatsApp Sharing
Dimensions decide how sharp an image looks and how heavy it is.
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