How do I compress a document to 400 KB?

Upload the scan above. We resize it to 1000×1300 px and compress the JPEG to just under 400 KB.

Is 400 KB enough for a readable scan?

Yes for a single flat page. Avoid shadows and keep the page square to the camera and the text stays crisp.

No. ShantiTools compresses the image entirely inside your browser — the file never leaves your device.

Image resizer

400 KB gives you room for a scanned document, not just a photo. Text, stamps and signatures stay readable after compression.

Target size

280–400 KB

Dimensions

1000×1300 px

Format

JPEG

1000×1300px · 280–400 KB

Choose imageJPG or PNG · Runs on your device

Upload any JPG or PNG from your phone or computer.
We fit it to 1000×1300 px and tune JPEG quality until the file lands between 280 and 400 KB.
Download and upload it straight to the form.

Everything runs on your device — your image is never sent to a server.

•Scan at around 200 DPI first — printed text survives compression far better than a phone snap of the same page.
•At 400 KB the file size is rarely the blocker. If the portal still rejects it, check the pixel dimension limit.

How do I compress a document to 400 KB?: Upload the scan above. We resize it to 1000×1300 px and compress the JPEG to just under 400 KB.
Is 400 KB enough for a readable scan?: Yes for a single flat page. Avoid shadows and keep the page square to the camera and the text stays crisp.
Is my image uploaded to a server?: No. ShantiTools compresses the image entirely inside your browser — the file never leaves your device.