Nookbyte Compress an image to 100 KB, 50 KB or any size
Pick the size a form or site allows, drop your images, and get each one back under it as a JPG or WebP, with as much quality as fits. Your images never leave your device.
Drop images here
You can also paste images with Ctrl+V. Works with JPG, PNG, WebP, GIF and AVIF, one image or up to 200 at a time.
How to compress an image to 100 KB
- Under Target size, choose the size you need, such as 100 KB or 50 KB, or type your own.
- Drop your images on the page, choose them from your device, or paste one.
- Download each image, or all of them in one .zip file. Each one is saved as
name-compressed.jpg.
How it works
Each image is saved at the highest quality that still fits under your size. If even a low quality is too big, the image is made smaller in pixels, a step at a time, until it fits. Every result shows its final size in pixels, its file size and the quality used. Change the target at any time and every image is done again.
Questions
How do I compress a JPG to 100 KB?
Leave the target at 100 KB, drop your JPG on the page and download the result. The tool finds the highest quality that keeps the file under 100 KB, so the image looks as good as that size allows.
How do I compress an image to 50 KB or 20 KB?
Pick 50 KB or 20 KB under Target size, then drop your image. Small targets often mean the image also has to get smaller in pixels. Each result shows its final size in pixels, so you can check it still meets the form's rules.
Why did my image get smaller in pixels?
Lowering the quality alone could not reach your target. Below quality 50, JPG images start to look blocky, so instead the tool shrinks the image step by step until it fits. A larger target keeps more pixels.
Is 100 KB counted as 100,000 or 102,400 bytes?
The tool uses 1 KB = 1,000 bytes, the stricter of the two, so 100 KB means at most 100,000 bytes. The file then fits whichever way a site counts.
What happens to a PNG with a transparent background?
JPG cannot be see-through, so transparent areas are filled with white. Choose WebP to keep them see-through, but check first that the site accepts WebP files.
Is my image uploaded?
No. Your browser compresses the image on your own device. It is never sent to Nookbyte or anyone else, and the tool keeps working if you go offline after the page loads.
Does it remove location data?
Compressed images are saved as new files, so the location, camera model and other details stored in the original are left out. An image that is already under your target is kept exactly as it was, details included.
Which files can I open?
JPG, PNG, WebP, GIF and AVIF work in every modern browser. Safari can usually open HEIC photos from an iPhone too, but other browsers cannot, so save those as JPG first.
Is it free?
Yes. There is no account and no watermark. You can compress up to 200 images at a time, as often as you like.