Increase image size in KB
Increase image size in KB without changing pixels: make a photo or JPG at least 20, 50 or 100 KB for forms. Set pixels or cm. Free, no upload.
Use the interactive tool to choose your files and create a download. JavaScript is required for local processing. No account needed.
How to increase image size in KB
- Choose a JPG, PNG or WebP photo or signature.
- Pick the minimum size your form asks for, such as 20 KB or 50 KB, or type your own.
- Keep the pixels, or enter the pixels or centimetres your form asks for.
- Press Increase size, check the preview, then download the JPG.
WaterPDF first saves the picture at a higher quality. If it is still smaller than your size, empty space is added inside the JPG, so the picture looks exactly the same and keeps its pixels. The result is at least the size you chose, counted with 1 KB = 1,024 bytes.
Before you get started
How do I increase a photo size to 50 KB?
Choose the photo above, pick 50 KB and press Increase size. The JPG you download is at least 50 KB.
Can I increase the KB without changing the pixels?
Yes. Keep size is selected by default, so the width and height stay the same. Only the file size grows.
My form wants a photo between 20 KB and 50 KB.
Pick 20 KB here, or use Compress image with the 20–50 KB range, which keeps the photo inside both limits.
Does it make the photo clearer?
No. A bigger file cannot add detail that the photo does not have. It only meets the form’s minimum size.
Photo ka size KB me kaise badhaye?
Upar photo chuniye, jitna KB chahiye (jaise 20 KB ya 50 KB) chuniye aur Increase size dabaiye. Photo waisi hi dikhegi, sirf size badhega.
Are my documents uploaded?
No. Selected file contents are processed in your browser. Normal page requests still reach the hosting provider. Use a trusted device and keep your originals.