Compress PDF to 100KB
Many job portals, government forms and university application systems cap PDF uploads at 100KB. That is a tight target: a single scanned page is often larger than that on its own.
Haven PDF compresses your file entirely in your browser — it is never uploaded to a server, which matters when the document is a CV, an ID scan or a signed form. Drop the file in, choose the strongest compression level, and download the result. If the first pass is not small enough, the steps below show what actually moves the needle.
How to
- Open the Compress tool. Click the button above — no sign-up, no install.
- Add your PDF. Drag and drop the file or pick it from your device. It stays local.
- Set the target to 100 KB. Use “Compress to target size” and pick 100 KB — the tool automatically finds the highest quality that fits.
- Download and check the size. If it is still over 100KB, delete unneeded pages or convert to grayscale and compress again.
What makes a PDF hit 100KB
Text-only PDFs (exported from Word or Google Docs) compress to under 100KB easily — text is tiny. What blows up file size is images: scans, photos and logos. Compression works by re-encoding those images at a lower quality and resolution, so a 2MB scan can often land near 100KB with readable results.
If one pass is not enough
Three tactics, in order of impact: (1) remove pages you do not need before compressing — the Delete pages tool takes seconds; (2) if the PDF is a scan, re-scan or re-export at 150 DPI in grayscale instead of 300 DPI color; (3) run compression again on the already-compressed file with the strongest setting. Converting color scans to grayscale alone often halves the size.
Why compress in the browser
The documents people compress to 100KB are usually sensitive: CVs, transcripts, ID scans, signed contracts. Haven PDF processes the file on your device — nothing is uploaded, stored or logged. Close the tab and no copy exists anywhere but your disk.
Frequently asked questions
- Can every PDF be compressed to 100KB?
- Not always in one pass. Text-based PDFs almost always can. Long or high-resolution scanned documents may need extra steps: fewer pages, grayscale conversion, or a second compression pass.
- Will my file be uploaded to a server?
- No. Compression runs entirely in your browser on your own device. The file is never uploaded, stored or shared.
- Will the PDF still be readable?
- Yes — compression reduces image quality gradually. Text stays sharp because it is not an image (except in scans, where you control the trade-off by choosing the level).
- Is there a file size or page limit?
- No limits, and it is completely free. No sign-up or payment required.