How to Verify That a File Really Stays in Your Browser
“Runs locally” is a useful privacy promise, but it should be something a user can verify—not just a line in a feature list. A browser-based tool can process a file on your device, send it to a server,
Written by
Founder of ZANCTA - privacy-first PDF and image tools that run entirely in your browser. No uploads, no server-side processing.
Founder of ZANCTA (zancta.tech) - PDF and image tools that run entirely in the browser, with no uploads and no server-side processing. I write about what client-only processing actually costs: model size budgets against user patience, WebAssembly memory ceilings on input size, and why a privacy guarantee needs engineering behind it, not just a claim on a landing page. Full-stack: Next.js, TypeScript, Node.js, PostgreSQL.
Responses
Markdown supported · ⌘↵ to post
No responses yet.