Compress image to 100KB, exactly
Job portals, exam forms, and email attachments love one specific demand: "photo must be under 100KB." Guessing quality sliders until the file fits is tedious — so this page does it for you. Drop any image and the tool automatically hunts for the highest quality that lands under 100KB, then shows the exact byte count before you download. No uploads, no accounts, no watermarks.
How to get under 100KB
- 1Drop your image on the tool above. The 100KB target is already filled in and compression starts automatically.
- 2Check the result. You'll see the exact output size and the quality the tool settled on. Preview it at full size — if it looks clean, you're done.
- 3Download and submit. The filename keeps your original name with a -compressed suffix.
When 100KB won't cooperate
Switch to WebP
WebP reaches 100KB at noticeably higher quality than JPG. The tool switches automatically when JPG can't make it.
Shrink dimensions first
A 12MP phone photo rarely needs full resolution for a form. Halving dimensions quarters the pixels — try our 50% resizer.
Avoid PNG for photos
PNG is lossless and huge for photos. Never use it when a strict KB target is involved.
Frequently asked questions
How do I compress an image to exactly 100KB?
Drop your image above — the 100KB target is pre-set. The tool binary-searches qualities and keeps the highest one that fits under 100KB.
Will my photo still look good?
For typical phone photos, yes — expect quality 70–85%, clean at normal viewing sizes. Very detailed or enormous images lose more.
What if it can't reach 100KB?
The tool tells you the smallest it achieved. Next steps: switch to WebP, or shrink dimensions first with our image resizer.
Which format is best for 100KB?
WebP reaches the target at higher quality than JPG. PNG is the worst choice for tight targets — the tool auto-switches away from it.
Is it safe for ID photos and documents?
You upload nothing — compression runs 100% in your browser, so sensitive documents never leave your device.