Compress PDF to 100KB
Compress a PDF to under 100 KB right in your browser. Automatic quality adjustment hits your target size — no uploads, no signup.
Drop a PDF here or click to browse
Compressed to ≤ 100 KB automatically — nothing is uploaded
Original
Compressed
Pages
Saved
Pages are re-encoded as images to reach the smallest size — text in the compressed PDF is no longer selectable.
How to use Compress PDF to 100KB.
- 1
Drop a PDF into the tool or click to choose a file
- 2
The tool automatically compresses it to 100 KB or less, page by page
- 3
Compare the original and compressed sizes
- 4
Click Download to save the compressed PDF
Why use this tool.
Meet hard 100 KB upload limits on forms and portals in one click
No trial-and-error with export settings
Documents never leave your device — safe for contracts and IDs
No signup, no watermark, no file limit
About Compress PDF to 100KB.
This tool compresses a PDF to 100 KB or less automatically. The most common upload cap for job applications, online forms, and document portals. Instead of guessing at export settings, it walks through progressively smaller quality and resolution combinations until the file fits your target, rebuilding the PDF at its original page size so it still prints correctly. Everything runs in your browser — the document is never uploaded, so contracts, ID scans, and statements stay private. The result downloads instantly as a compressed PDF that passes 100 KB upload validation.
Frequently asked questions.
How does the tool get the PDF under 100 KB?
It re-renders each page as a JPEG and rebuilds the PDF, walking through progressively more aggressive quality and resolution settings until the file fits under 100 KB.
Will text still be selectable?
No — pages are re-encoded as images to reach small sizes, so text can no longer be selected or searched in the compressed file. Keep the original if you need that.
Is my document uploaded to a server?
No. Everything runs in your browser via JavaScript. Contracts, IDs, and statements are never transmitted anywhere.
What if my PDF cannot reach this size?
Very long or image-heavy PDFs sometimes cannot reach small targets even at the lowest quality. The tool shows you the smallest size it could achieve and still lets you download it.