Will colour stamps still be clear?

Yes. 150 KB is enough for a full-colour A4 scan where seals and signatures remain distinct.

How long does this take on an older phone?

A second or two. Work is sized to your device's available memory and cores, so older hardware simply uses a gentler pipeline instead of crashing.

Resize an image to 150 KB

150 KB keeps a high-resolution scan crisp while staying light enough for slow uploads. Drop your photo in below — the target is already set to 150 KB, and everything runs inside this browser tab, so the image never leaves your device.

Target file size

Dimensions

Output format

How to get a photo under 150 KB without it turning to mush

Crop before you compress

Empty background costs bytes. Cropping tight on the subject leaves more of the size budget for the detail that matters.

Match the required dimensions

Most forms cap both KB and pixels. Set the dimension preset here as well so a 150 KB file is not rejected for being the wrong shape.

Use JPG for photos

PNG stores photos far less efficiently. Choosing JPG output often reaches the target with visibly better quality.

Who asks for 150 KB?

150 KB is common on property, legal and medical portals where a scan must stay readable after a reviewer zooms in.

Settings that actually reach 150 KB

Keep 1800–2200 px on the long edge for an A4 page. At this budget you can also retain colour, which matters for stamps, seals and highlighted sections.

The mistake that gets uploads rejected

Over-sharpening before compressing. Sharpening halos are high-frequency detail and cost real bytes; compress from a clean, correctly exposed original instead.

Questions about 150 KB uploads

Will colour stamps still be clear?: Yes. 150 KB is enough for a full-colour A4 scan where seals and signatures remain distinct.
How long does this take on an older phone?: A second or two. Work is sized to your device's available memory and cores, so older hardware simply uses a gentler pipeline instead of crashing.