Compress PDF to 100KB Free Online
Select your PDF document and compress it to 100KB or less. The process runs 100% locally in your browser memory.
🔑 PDF is Password Protected
This file is encrypted. Please enter the password to decrypt and compress it.
Your PDF file has been optimized and compressed to under 100KB.
How to Compress PDF under 100KB in Your Browser
Government job applications, academic document portals, and municipal registries frequently mandate PDF file size limits under 100KB. Since text is naturally small but images embedded inside PDF pages (like scanner headers or signatures) are large, standard compressors often fail. Our tool uses PDFJS and PDF-Lib to render document pages onto a vector-aligned canvas, saving them as compressed JPEG chunks that pack efficiently under the 100KB threshold.
Frequently Asked Questions
Drag and drop your PDF file above. The page will load PDF.js libraries locally, render each page at A4 dimensions, optimize page elements, and export a clean PDF document under 100KB.
To guarantee a strict 100KB limit for image-rich and scanned PDFs, this tool renders pages as high-efficiency raster images. While this guarantees the file size fits the limit, text selection is disabled on the output. It is perfect for scanned certificates and forms.
Yes. If your PDF is encrypted (like e-Aadhaar cards), you will see a local prompt asking for the password. The decryptor runs locally, compresses the file, and lets you download the result.
No. Your files are processed entirely inside your browser's local sandbox memory. No file data is sent to external networks, protecting your privacy.