Compress PDF to 500KB
Job application portals, university systems and assignment uploads often cap files at 500KB. The target size is preset to 500KB here — upload and compress. Everything runs locally in your browser; your file is never uploaded.
Drop your file here
or choose from your device — no sign-up needed
Choose filesFiles are processed locally in your browser — never uploaded to any server
Details
Full-release pricing preview: $6.9/mo or $49/yr · 30-day email notice before billing starts · nothing is charged during the beta
How it works (3 steps)
Upload a PDF
The target size is preset to 500KB; change it if your portal allows a different limit.
Automatic compression
Images are re-encoded page by page with a binary search on quality until the output fits under 500KB.
Download the result
Before/after sizes are shown. If 500KB is unreachable we report the minimum achievable size instead of outputting an oversized file.
Popular searches
- compress resume PDF to 500KB
- application portal file size limit
- compress PDF to 300KB
FAQ
Which systems commonly cap at 500KB?
University applications, job portals expecting resume attachments, online assignment submissions and some banking/insurance uploads — looser than 200KB, but scans still overshoot it easily.
Try it ↑Will a scanned resume stay readable at 500KB?
A 1–3 page resume or certificate scan is usually fine; for long transcripts, split out only the pages you need first.
Try it ↑What if 500KB is impossible?
We clearly report the minimum achievable size rather than silently producing an oversized file; use the Split tool to reduce page count first.
Try it ↑Does a digital signature survive processing?
No. Any change to a signed PDF (merging, compressing, watermarking…) invalidates the existing digital signature — that is the tamper-proof design of PDF signatures, not a limit of this site. Process first, then sign.
Try it ↑Can I trust the processing engine?
Yes — and you can verify it: the tool runs on open-source in-browser engines (pdf-lib, pdf.js, Tesseract OCR…) on your own device. Open DevTools → Network while processing and you will see no file upload requests.
Try it ↑