Enter the portal's limit
The exact maximum from the upload page — 200 KB is the most common for certificates.
PDF below the portal limit
PDF compressor
Set the KB limit the portal enforces. Structure-preserving optimisation keeps selectable text; maximum compression converts pages to images and is guaranteed to shrink further — the tool tells you honestly which one your target needs.
Common limits
Processed temporarily
How it works
Let the tool pick quality
It searches resolution and image quality until the file genuinely fits, instead of applying a blind percentage.
Upload the verified file
What downloads is what was measured — no surprises at the portal.
Common questions
The portal says 200 KB but my scan is 4 MB — will it work?
Almost always. Scanned pages compress heavily as JPEG-backed pages. Multi-page documents may need the maximum-compression method.
What if the target truly cannot be met?
The tool stops and explains, suggesting a higher limit or fewer pages, rather than silently producing a file over the limit or an unreadable one.
Why not just re-save at lower quality myself?
Fixed quality settings overshoot or undershoot. Searching against the actual byte limit lands just under it with the best possible quality.