Many online forms, portals and email systems limit how large an uploaded image can be. This free tool shrinks a photo or signature to a maximum size in KB that you choose. It tries different JPEG quality levels, keeps the highest one that fits, and scales the picture down only when quality alone is not enough.
Everything happens in your browser, so your pictures are never uploaded. Check your form's instructions for the exact size, format and dimensions it asks for.
Choose your image above, type the maximum size you need in the Target size box and press Compress. The tool finds the highest JPEG quality that stays under that limit and only shrinks the picture itself if quality alone is not enough.
Yes. Type a width and a height in the optional boxes and the picture is cropped to fill that size without stretching. If you fill in only one box, the other side follows the original proportions.
No. Compression runs in your browser, and the file never leaves your device.
PNG, JPG, WEBP and GIF images open in every modern browser. iPhone HEIC photos depend on your browser, so convert them to JPG first if one will not open. The output is always a JPG.
If you typed both a width and a height, the picture keeps that size, so a very small limit may not be reachable. The tool then shows the best result it could get. Clear the width and height boxes or raise the limit and try again.