Security isn't an afterthought at ToolBox — it's the foundation. Our architecture is designed so that we physically cannot access your data.
Every tool runs entirely in your browser. When you upload a file, it never leaves your device. We use WebAssembly (WASM) to run powerful libraries like PDF-lib, Tesseract OCR, and FFmpeg directly in your browser at near-native speed.
Traditional online tools upload your files to their servers for processing. We don't have upload endpoints because we don't need them. Your files are processed using the FileReader API and Blob URLs locally.
ToolBox is served exclusively over HTTPS. This ensures that the code you receive is authentic and cannot be tampered with in transit.
We do not use tracking cookies. Any cookies we set are purely functional (like remembering your recently used tools in localStorage, which stays on your device).
We build on trusted open-source libraries: PDF-lib, PDF.js, Tesseract.js, jsPDF, html2canvas, Chart.js, and more. These libraries are widely audited and trusted by millions of developers.