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.
Who asks for 500 KB PDFs?
500 KB is the common ceiling on email attachments, university submissions and internal document workflows.
What fits inside 500 KB
This budget holds around ten scanned pages, or a colour brochure of a few pages, at readable quality. Colour is affordable here in a way it is not at 100 KB.
The usual reason it fails
Leaving embedded fonts and full-resolution images in an exported design file. Re-rendering through the compressor flattens that overhead without you having to open the source document again.
Questions about 500 KB PDFs
- Is quality noticeably worse at 500 KB?
- For text documents, no. For image-heavy brochures you may see slight softening on photographs, but printed text stays crisp.
- Is the file uploaded to compress it?
- No. The PDF is parsed and re-rendered locally in this browser tab, so confidential documents never leave your device.