Compress Image to KB
Make a photo smaller than 20 KB, 50 KB, 100 KB, 200 KB or any size you need. Free, no sign-up, and your images never leave your device.
How to compress an image to a specific size in KB
Add one or more photos, then choose the size you need: 20 KB, 50 KB, 100 KB, 200 KB, 500 KB, or any number you type. The tool tries different quality levels and finds the best-looking version that is still under your limit. When it finishes, each image shows its old and new size, and you can download it. Everything happens in your browser, so your photos are not uploaded.
When you need a small image
- Online applications and forms: exam, university, visa and job portals often ask for a photo or signature below a set size such as 20 KB or 50 KB.
- Email and messaging: smaller attachments send faster and avoid mailbox limits.
- Websites and blogs: lighter images make pages load faster, especially on mobile data.
- Storage: shrink a folder of photos before backing it up or sharing it.
How the target size is reached
A JPG file gets smaller when its quality setting goes down or when it has fewer pixels. The tool first looks for the highest quality that fits. If the target is too small for the image at a decent quality, it reduces the width and height step by step, then searches for the best quality again. This keeps the result looking as good as possible for the size you asked for. If you must keep the original dimensions, switch on Keep original dimensions, and expect lower quality.
Tips for the best result
- Start from the original photo rather than one that was already compressed or screenshotted.
- For passport-style photos and signatures, crop to the needed area first, so no file size is wasted on empty background.
- Choose JPG when a website asks for JPG or JPEG. Use WebP only when the site accepts it.
- If the result looks too soft, try the next size up, for example 100 KB instead of 50 KB.
- Check the width, height and file type the form requires. This tool controls file size, not exact pixel dimensions.
Privacy
The photos you add stay in your browser. They are not uploaded, saved, or shared, and they disappear when you close or refresh the page.
Frequently asked questions
How do I compress an image to 50 KB?
Open the tool, add your photo, and tap 50 KB. The tool tests different quality levels and, if needed, reduces the pixel size slightly until the file is just under 50 KB. Then press Download.
Will the file be exactly the size I choose?
It will be at or under the target, usually within a few percent of it. The tool picks the highest quality that still fits, so it does not make the file smaller than necessary.
Is my photo uploaded to a server?
No. The compression happens inside your browser on your own device, so the photo is never sent anywhere.
Why did the image get smaller in pixels too?
A very small target on a large photo cannot be reached by lowering quality alone without the picture falling apart. The tool reduces the dimensions a little first and keeps the quality reasonable. If you must keep the original dimensions, tick Keep original dimensions, but then the quality may drop a lot or the target may not be reachable.
What is the difference between JPG and WebP output?
JPG works everywhere, including most upload forms. WebP is usually smaller at the same quality, but some older sites and programs do not accept it. If a form asks for JPG, choose JPG.
Can I compress a PNG or a photo from my phone?
Yes. PNG, JPG, WebP and similar images work. A PNG with a see-through background is saved on a white background when you choose JPG. iPhone HEIC photos need to be converted first with the HEIC to JPG tool.
Can I compress many images at once?
Yes, up to 30 at a time. Each one is reduced to the same target, and you can download them one by one or all together as a ZIP file.
What if the tool says it could not reach the target?
The image was too detailed for that size even after resizing, or you chose to keep the original dimensions. Try a slightly larger target, switch off Keep original dimensions, or use the image resizer first.
Why do forms ask for a photo under 20 KB or 100 KB?
Many online applications, exam portals and government or job sites limit upload size to save storage and speed. Check the exact limit and the accepted format on the form you are filling in, as they differ between sites.
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