Compress PDF to 100 KB
The target is already set to 100 KB. Drop your PDF and pdfy finds the sharpest version that fits.
A fresh start for your PDFs.
Drag a PDF file here and let’s make something happen.
Only on your device. Always in your control.
How to compress PDF to 100 KB
- 1
Drop the PDF you need to upload somewhere.
- 2
Leave the target at 100 KB, or adjust it if your portal's limit is different.
- 3
Press Compress PDF and download a file that fits the limit.
About this tool
A 100 KB limit is common for exam registrations, scholarship forms, government portals and ID proof uploads. As a rough guide, a scanned document at a readable quality fits around one to three pages in 100 KB. Text-only PDFs exported from Word can hold far more.
If your file has more pages than will fit, split it first and upload the parts separately, or convert pages to grayscale to save extra space before compressing to 100 KB.
Target 100 KB
pdfy optimizes toward your target. If preserving text prevents reaching it, you see the actual size and can choose image-based compression.
Readable first
It never shrinks further than needed, so your document stays as clear as possible.
Private documents stay private
IDs and certificates are processed on your device, not uploaded.
Compress PDF to 100 KB FAQ
How do I reduce PDF size to 100 KB?
Drop your file above and press Compress PDF. The target is pre-set to 100 KB, and pdfy optimizes toward your target; the actual result size is shown before download.
What if my PDF can't get under 100 KB?
Very long documents may not fit while staying readable. pdfy shows the actual output size and suggests splitting the file or choosing image-based compression.
Will the portal accept the compressed file?
The output is a standard PDF, but acceptance depends on the portal. Check the actual output size and all portal requirements before uploading.
Are my files uploaded to a server?
No. pdfy processes your files inside your browser using your own device. Local tools do not upload documents. If you choose Save draft, that draft is stored only in this browser. You can confirm it in your browser's network panel: no file is ever sent.
Is it really free? Are there limits?
Yes, it is free with no sign up, no watermark on your output and no daily task limit. Because your device does the work, the only practical limit is your device's memory.