If you’ve ever tried to compress a bank statement or merge sensitive PDF documents online, you’ve probably noticed the process: you upload the file, wait for a progress bar, and then download the result.
But what happens to that file on the server?
Most free PDF tools (like ILovePDF or Smallpdf) upload your highly sensitive documents to remote servers to process them. This is a massive privacy risk for documents containing PAN cards, Aadhaar numbers, and financial statements.
To solve this, I built PDF Pro.
Why WebAssembly (WASM)?
Instead of sending your files to a server, I used WebAssembly to compile a heavy C++ PDF processing library directly into Javascript.
This means the entire PDF engine runs locally inside your browser.
- Zero Uploads: Your file literally never leaves your computer.
- Instant Speed: Because there is no network latency, compressing a 10MB file happens in milliseconds instead of minutes.
- 100% Free: No servers means no cloud computing costs. I can afford to offer this tool completely free with zero daily limits.
Built for the Indian Web
I specifically optimized PDF Pro to target government portal limits. The Staff Selection Commission (SSC) and UPSC require documents to be strictly under 200KB.
Instead of arbitrarily dropping quality and making your scanned certificates blurry, the WebAssembly engine strips embedded fonts and intelligently down-samples resolution to exactly 150 DPI—maintaining crystal clear vector text while satisfying the portal sizes.
If you are a developer, CA, or student tired of uploading your personal data to random websites, try it out: PDF Pro - Free & Private PDF Tools.
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