Remove pages you don't need
Fewer pages means every remaining page keeps more of the size budget — split the document first if the portal only wants one section.
Compress a PDF to 500 KB
500 KB keeps a detailed scan readable while staying light enough for email and upload limits. The target below is already set to 500 KB, and the whole job runs inside this browser tab — no account, no upload, no watermark.
Compress a PDF
Shrink heavy, image-rich or scanned PDFs so they fit inside upload and email limits.
Drop a PDF here
Works best on scans and image-heavy documents
Getting a PDF under 500 KB without wrecking it
Scans compress hardest
A photographed or scanned page is an image, so it costs far more than typed text. Scanning in grayscale at 200–300 DPI helps a lot.
Check the real final size
The tool reports the exact bytes it produced, so you can confirm it is truly under 500 KB before uploading anywhere.