Don't trust our words. Trust your device network panel logs.
How to Verify DocTijori Personally
Open any tool page on DocTijori (e.g., PDF Compressor).
Let the page finish loading.
Physically disconnect your Wi-Fi or enable Flight Mode.
Drop your confidential document and run the process.
The tool will process your file instantly while entirely disconnected from the internet. This is mathematically impossible if your data was being uploaded to an external server.