Compress PDF to 500 KB
Shrink a PDF to 500 KB while preserving readable detail.
Hit a 500 KB upload limit without killing quality
500 KB is a common middle ground on Indian government and exam portals — strict enough that most untouched PDFs blow past it, but generous enough that quality stays decent after compression. This tool auto-iterates JPEG quality and resolution until your file lands just under 500 KB (≈ 512,000 bytes).
Portals that enforce 500 KB
- Many state PSC and university application forms
- Driving licence and RTO document uploads
- Scholarship portals and some CBSE/NCERT submission forms
- Corporate HR onboarding systems with moderate caps
How it compares to other targets
At 500 KB, a 5–15 page text-heavy PDF stays highly readable. For stricter 100 KB or 200 KB portals, expect heavier quality loss — try Compress PDF to 100 KB or Compress PDF to 200 KB. For multi-page scans and passbooks, Compress PDF to 1 MB gives room for more detail.
How to use this tool
- Upload PDF.
- Click Compress.
- Download the compressed file.
Frequently asked questions
Good for multi-page docs?
Yes — 500 KB handles 5–15 page text-heavy PDFs comfortably. Heavier scans or 20+ page files may need the 1 MB target instead.
Why does my file come out slightly under 500 KB?
Portals typically mean "≤ 500 KB" strictly. The tool aims for 480–500 KB to leave safety margin so the upload never fails.
Will text stay selectable?
No — target compression rasterises pages. If selectable text matters, use the main Compress PDF tool with a high quality setting.
How many iterations does it run?
Usually 3–5 passes — the tool estimates the quality curve and converges quickly even on large scans.
Is anything uploaded?
No — the whole pass runs client-side. Your PDF never leaves your device.