Security at ChangeThisFile

Your files are yours. Here is how we keep them safe.

Client-Side Processing

Many conversions run entirely in your browser using JavaScript. Your files never leave your device. We use Canvas API, pdf-lib, and other browser-native tools for image, PDF, and data conversions.

Server-Side Processing

Some conversions (video, audio, document) require server processing. Files are uploaded over HTTPS, processed using FFmpeg, LibreOffice, Calibre, or Ghostscript, and automatically deleted immediately after conversion.

No Storage

We don't store your files. Uploaded files exist only in temporary storage during processing and are deleted automatically — typically within seconds.

Encryption

All data in transit is encrypted with TLS 1.3 via Cloudflare.

Infrastructure

Our conversion server runs on dedicated hardware in Europe. No third-party processing services are used.

Open Source Tools

We use open-source, well-audited conversion tools: FFmpeg, LibreOffice, Calibre, Ghostscript, and qpdf.