Compress PDF Locally on Windows — No Upload
Reduce PDF file size on Windows without sending your files to any server.
Compressing a PDF on Windows usually means uploading it to a cloud service like iLovePDF or Smallpdf — but that exposes your document to a third-party server. FixIt Localy runs the entire compression process inside your Windows browser using WebAssembly, which means your file never leaves your device. Whether you're reducing a 50MB scanned contract or shrinking a presentation for email, the result is instant and completely private.
How It Works
Open the PDF Compressor
Click the button below to open the tool. No download, no installation — it runs directly in Chrome, Edge, or Firefox on Windows.
Drop or select your PDF
Drag your PDF onto the upload area or click to browse. Files stay in your browser memory — nothing is uploaded.
Compress and download
Choose your quality level and click Compress. Download the smaller PDF instantly. The original is never modified.
Why No File Upload?
Zero Data Exposure
Your files are processed using WebAssembly inside your browser tab. They are never transmitted to any server.
Instant Deletion
When you close the browser tab, all processed data is immediately destroyed. Nothing is cached or logged.
PDPL & GDPR Safe
No third-party data processor is involved. Fully compliant with Saudi Arabia's PDPL and the EU's GDPR by design.
Frequently Asked Questions
Does compressing a PDF on Windows require an internet connection?
Only to load the tool for the first time. After that, the compression runs entirely offline using WebAssembly inside your browser. You can even disconnect from the internet after the page loads.
Is it safe to compress confidential PDFs on Windows?
Yes. Unlike cloud tools, this compressor processes your file inside your browser tab using local memory. The PDF data is never transmitted to any server, making it safe for legal documents, contracts, and medical records.
How much can I reduce the PDF file size?
Compression results depend on the PDF content. Scanned PDFs with large images typically compress by 60-90%. PDFs with mostly text compress by 10-40%. You can adjust the quality slider to control the size-quality trade-off.
Does this work in all Windows browsers?
Yes — Chrome, Edge, Firefox, and Brave on Windows all support the WebAssembly compression. Microsoft Edge is pre-installed on Windows 10 and 11 and works perfectly.
Are there any file size limits?
No server-imposed file size limits because nothing is uploaded. The only limit is your device RAM. PDFs up to several hundred MB work fine on most Windows computers.