Why browser-based file tools are safer than upload sites

Bank statements, Aadhaar and PAN scans, contracts, medical reports — these are exactly the documents people run through online converters. Most such sites upload the file to their servers, process it, and keep it for “a few hours”. You're trusting their security, their staff and their retention promises.

How in-browser processing is different

When you open a tool here, your browser downloads the program code — not the other way around. The file you pick is read locally, processed by that code on your CPU, and the result is handed back as a download that never touched the network. There's nothing to leak because nothing was sent.

How to verify any tool

1. Open developer tools (F12) and select the Network tab.
2. Run the tool on a file.
3. Look for large outgoing requests (POST or PUT) around the size of your file. On an in-browser tool you won't find any.

Another simple test: load the page, switch on airplane mode, and try the tool. If it still works, it's processing locally.

Hidden data inside files

Privacy isn't only about uploads. Photos carry GPS coordinates; Office files carry author names and edit history. Before sharing, try Remove EXIF or Remove Office Metadata.