Compress to size
Increase Image Size in KB
Grow a photo past a minimum KB requirement using real upscaling and fine dithering — not junk padding.
How to increase image size in kb
Add your image
Drag in or tap to choose a JPG, PNG or WebP.
Set a minimum size
Enter the KB size your form requires as a minimum — a common but less obvious requirement than a maximum.
Download
We grow the file toward your target using genuine upscaling and, if needed, fine dithering, then hand it back.
About this tool
Most upload limits are a maximum, but some scholarship, government and scanning portals reject files that are too small too — a heavily compressed or tiny photo can look "suspicious" or fail an automated quality check. This tool goes the other direction: it grows your image toward a minimum KB size instead of shrinking it.
The size increase comes from real image processing — upscaling the pixel dimensions and, for very simple or flat images that don't gain enough from that alone, adding fine per-pixel dithering — never from appending meaningless bytes to the file. That matters because some validators reject files with non-standard padding; this approach produces a normal, valid image at every step, so it holds up to strict portal checks.
Questions
Does my image get uploaded?
No. Everything runs locally in your browser — the file never leaves your device.
Will this pass a strict file validator?
Yes — the extra size comes from genuinely re-rendering the image at a larger scale (and occasionally fine dithering), producing a normal, standards-compliant file rather than padded or junk data.
Will the photo look bigger or different?
The pixel dimensions increase, which is what actually adds the file weight. Very simple, flat-color images may show subtle fine grain from dithering if upscaling alone can't reach your target.
What if I can't reach my exact target?
Extremely simple images (e.g. plain graphics) have a real ceiling to how much genuine detail can be added — we'll get as close as legitimately possible and tell you if we hit that limit.