University forms · the first generous cap
Compress an image to 100 KB.
100 KB is the first limit where quality stops being the problem. University admission forms, older government portals and combined photo-plus-signature sheets usually live here.
- 100% client-side
- Nothing is uploaded
- No account
- Canvas / WebAssembly on your device
Loading compressor…
What fits comfortably in 100 KB
- A 600 × 800 px portrait at high JPEG quality.
- A 413 × 531 px passport photo at 300 DPI — print-grade.
- One A4 greyscale page scanned at 100 DPI, saved as JPG.
- A combined photo + signature sheet with margins cropped.
Expert trap: compressing a file that already fits
If your original is 90 KB, in the right format and inside the portal's range, you do not need a compressor at all — re-encoding it to “make sure” is pure generation loss. Check the real size on disk first; come here only when you are over the cap or in the wrong format.
When 100 KB is still not enough
Colour A4 scans and multi-page documents do not fit — those belong on the 200 KB image page or the PDF pages, which trade colour and DPI against the cap honestly.
Frequently asked questions
Is 100 KB enough for a 300 DPI passport photo?
Yes. A 413 × 531 px JPEG at quality ≈ 85 lands between 60 KB and 90 KB, leaving headroom under the cap.
Which portals cap uploads at 100 KB?
Many university admission forms, older state portals, and RRB signature fields (≤ 100 KB). It is also a common ceiling for combined document sheets.
Does the quality search touch dimensions at 100 KB?
Rarely. At this cap, encoder quality alone almost always fits; pixel dimensions shrink only for very large sources that quality cannot bring under 100 KB.
JPG or PNG at 100 KB?
JPG for photographs. PNG only for flat graphics or transparent signatures — PNG photographs routinely blow past 100 KB with no visual gain.
Can I put photo and signature in one 100 KB file?
Yes, when the portal asks for a single combined upload: lay them out, crop the margins, then compress the sheet as one JPEG.