Resize Image to 100KB Online
Free, private, browser-based image resizer — also 20KB, 50KB, 200KB, custom and width × height.
50% smaller
More options
Used for Make Smaller and Width & Height. Exact KB sets quality automatically.
Resize to another size
How to resize an image to 100KB
- 1
Select your image
Click Select Images or drag and drop a JPG, PNG or WebP. Nothing is uploaded to a server.
- 2
Keep 100KB selected
The Exact KB mode is set to 100KB. You can switch to 20KB, 50KB, 200KB, a custom size, or resize by width and height.
- 3
Resize and download
Click Resize, then download your image at or just under 100KB.
Private
Image stays in your browser.
Fast
No upload required.
Free
No signup or watermark.
Flexible
Smaller, exact KB, or dimensions.
Resize an image to 100KB in seconds
Many forms, job portals and websites ask for an image under 100KB, but a normal phone photo is several megabytes — far too large. This free tool resizes your image to 100KB right in your browser: select a photo, keep 100KB selected, click Resize, and download a file that fits the limit while still looking clear.
To hit 100KB, the tool lowers the JPG quality step by step and only reduces the dimensions if it has to, so you always get the sharpest result that still fits. It is not limited to 100KB either — switch the mode to choose 20KB, 50KB, 200KB or a custom size, set an exact width and height, or simply make the image a percentage smaller. Nothing is uploaded, so your images stay private on your device.
Frequently asked questions
How do I resize an image to 100KB online?
Click Select Images and choose your photo, keep the target on 100KB (it is selected by default), then click Resize and Download. The tool lowers the quality — and the dimensions only if needed — until the file is at or just under 100KB. Everything happens in your browser.
Can I resize a JPG or JPEG image to 100KB?
Yes. JPG and JPEG are the easiest formats to bring to 100KB. The tool finds the highest quality that still fits under 100KB, so your photo stays as clear as possible at that size.
How do I resize an image below 100KB?
Select the 100KB option and resize — the result is normally at or just under 100KB, which is exactly what "maximum 100KB" forms want. If you need it well below 100KB, pick a smaller target such as 50KB, or reduce the width and height in More options.
Can I resize a PNG image to 100KB?
Yes. PNG is supported. PNGs are larger by nature, so for a small target like 100KB it usually helps to keep the output format as JPG (the default) or WebP, which compress photos much more efficiently than PNG.
How do I resize an image to 100KB without Paint?
You do not need Paint or any installed software. This tool runs entirely in your browser — select your image, keep 100KB selected, click Resize and download. It works on Windows, Mac, Android and iPhone.
How do I resize an image to 100KB in Paint?
In Microsoft Paint you can use Resize to lower the dimensions and Save As JPEG, then check the file size and repeat until it is near 100KB. Paint cannot target an exact file size, so it is trial and error — this tool is simpler because it aims for 100KB directly.
Is my image uploaded to a server?
No. Your image is processed locally in your browser using the HTML5 Canvas API. It is never uploaded, stored or sent anywhere, and no account is required.
Why is my image not reaching exactly 100KB?
File size depends on the image, so an exact figure is not always possible. The tool gets as close to 100KB as it can without making the picture look bad, and it will land at or just under the limit. Very large images may be scaled down slightly to fit.
Can I resize multiple images to 100KB?
Yes. You can add up to 10 images at once, resize them together, and download each result — or download them all as a ZIP.
What image formats are supported?
You can upload JPG/JPEG, PNG and WebP images, and choose JPG, PNG or WebP as the output format. JPG is the default because it gives the smallest file size for photos.