Compress PDF to 500KB
Preconfigured to compress PDFs to ~500 KB (512,000 bytes), a common upload cap for strict government and enterprise portals.
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Accepted: .pdf,application/pdf · Max 24 MB
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About this tool
Many government portals and enterprise upload forms cap PDF attachments at 500 KB, which is tight for anything more than a couple of scanned pages. This landing takes your PDF, re-encodes each page as a compact image, and iterates the quality until the total lands close to 500 KB. Because the tool works page-by-page as images, the visual layout is preserved, but selectable text and vector artwork are flattened. Everything happens in the browser.
FAQ
Pages are rendered as images to fit tight size budgets — that trade-off makes 500 KB achievable.
Yes. Scan-heavy PDFs usually compress especially well.
Split it into two files and compress each to keep quality reasonable.
No — it stays on your device.
It matches the most common cap. Verify the specific portal's rule before submitting.
More about this tool
How it works
- Add one PDF (unlocked) that should land near about 500 KB.
- Compression re-encodes pages as images toward about 500 KB for portals that reject larger PDFs.
- Confirm the new size, knowing selectable text may be reduced, then download.
Tips
- 500 KB target preset — Aims slightly below 500 KB to safely clear portal validators.
- Layout preserved — Every page keeps its original appearance and page order.
- Local processing — PDFs are not uploaded anywhere.
- Preview page — Inspect a rendered page before locking in the settings.
- Fits form-portal rules — Ideal for tender, licence, and application uploads.
Supported formats
Input: PDF (unencrypted, ~40 pages max). Output: PDF at approximately 500 KB.
Input
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PDF pdf
Output
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PDF pdf
Common uses
- Tender document uploads
- Government service form attachments
- Court and legal e-filing systems
- Enterprise vendor onboarding portals
- University submission portals
Limitations
- Text becomes non-selectable because pages are re-encoded as images.
- Long PDFs beyond ~40 pages must be split first.
- Password-protected files are not supported.
- 500 KB is a target, not a guaranteed byte count.
- Digital signatures are typically invalidated by re-encoding.
- About 25 MB per file, processed one at a time.