Why You Should Never Upload Confidential PDFs to Online Tools
An deep dive into the privacy risks of cloud-based PDF tools and how local browser processing solves the problem.
The Cloud Risk
When you Google "merge PDF", the top results are massive cloud platforms. While convenient, using them means your document is uploaded to their servers. If you are uploading a non-disclosure agreement (NDA), a patient's medical record, or corporate financial data, you are potentially violating data privacy laws like GDPR or PDPA.
Data Retention & Breaches
Even if a site claims to "delete your file after 1 hour", you have no technical guarantee this actually happens. Furthermore, if their server is hacked during that 1-hour window, your unencrypted document is compromised.
The Client-Side Revolution
Tuko uses WebAssembly and modern browser APIs (like pdf-lib and PDF.js) to do the heavy lifting directly on your laptop's CPU. Your file never touches a network cable. You can even disconnect your Wi-Fi after the site loads, and Tuko will continue to function perfectly.
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