Compress Image to Exact KB Online

Use this preset when a form, application or upload asks for an image no larger than 100KB. The target is already selected.

add_photo_alternateChoose or drop a file hereJPG, PNG or WebP · up to 25 MBChoose file

Target size

lockProcessed privately in your browser

How it works

1
Choose a JPG, PNG or WebP image.
2
Enter the exact KB or MB limit you need.
3
Compress and download the result.

Frequently asked questions

Can I compress an image to exactly 100 KB?add

Yes. Enter 100 KB and SmallMB aims to create a file at or just below that limit.

Are my photos uploaded?add

No. Image compression runs locally inside your browser.

Will the image lose quality?add

Some quality reduction is necessary for a much smaller file, but SmallMB preserves as much detail as the target allows.

PRACTICAL SIZE GUIDE

What a KB / MB target means

target

Best used for

Choose any KB or MB ceiling for forms, profile photos, email attachments and document uploads.

tune

How SmallMB reduces the file

SmallMB tests JPEG quality and, when necessary, image dimensions until the result fits at or below your target. Very small targets need stronger visual reduction.

fact_check

Before you upload

Open the downloaded image and check faces, signatures and small text.
Confirm the portal asks for a maximum size, not an exact byte count.
Keep the original file until the upload is accepted.

verifiedTool guidance maintained by Naman Labs · Reviewed September 2026 · SmallMB