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.
Free online tool
Compress Image to 100KB 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 MB
lockProcessed privately in your browser
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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.
Will the result be exactly 100 KB?add
SmallMB targets 100 KB or slightly below it. Most portals enforce a maximum size, so a result under the limit is normally accepted.
What a 100 KB target means
Best used for
A 100 KB image is a common balance for application photos: small enough for strict uploads while usually remaining clear on screen.
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.
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