Image resizer in KB for forms, uploads and email
Upload forms are picky. The photo has to be under 50 KB, the signature between 10 and 20 KB, and anything else comes back with a vague error. This online image resizer takes your picture and brings it under the number you type, so the form accepts it. It runs in your browser and the file never leaves your phone or computer.
Resize images to a KB limit
Pick the file, type the number from the form and press Resize. There are pages for resize image to 20KB, 50KB and 100KB, and a general image resizer in KB for any other number. The tool lowers the quality, and the pixels when needed, until the file just fits.
Change the size of an image in px, cm or MB
You can set the size in pixels, centimetres or inches. For cm and inches the tool uses 300 DPI, so 3.5 × 4.5 cm comes out at about 413 × 531 px. See the image resizer in px, in cm and in MB pages for each unit.
Image resolution decrease without a blurry result
File size and pixel size are different things. A phone photo is often 4000 × 3000 pixels, far more than a form needs. Cutting the pixels first is the cleanest image resolution decrease. Lowering quality alone is what makes photos blocky, so the tool shrinks the pixels before it touches quality.
Cropping, compressing and bulk resizing
Use cropping image to cut a photo to the right shape first. The pic compressor and image size reducer make files smaller, and the bulk image resizer handles many pictures with one setting.
Frequently asked questions
Is my image uploaded anywhere?
No. The image is resized inside your browser and is never sent to a server.
How do I resize an image to 50KB online?
Upload the image, tap the 50 KB chip, keep the format on JPG and press Resize. Download the result when it shows it is under your limit.
Which format is best for a small KB limit?
JPG or WebP. PNG files stay large, so use them only when you need transparency.
Why could it not reach my KB limit?
Some images cannot get that small without becoming tiny. Try a higher limit or a smaller width and height.
Can I resize many images at once?
Yes. Open the bulk image resizer, select several files and press Resize. Each file gets its own download button.
Can I crop the image here?
Yes, on the cropping image page. Drag a box over the part to keep, press Apply crop and then resize.
Can I change the size of an image in cm?
Yes. Choose centimetres in the unit box and type the width and height. The tool works at 300 DPI.
Will the quality drop?
A little when the limit is very small. The tool keeps the best quality that still fits your limit.
Is it free?
Yes. No sign-up and no watermark.