Yes, every tool is free with no account, no sign-up, and no usage limits.
No. Every tool runs entirely in your browser using native browser APIs and JavaScript — nothing you type, paste, or upload is ever transmitted to a server. You can verify this yourself: open your browser's network tab while using any tool and you'll see no outgoing requests carrying your input.
No account, login, or email is required for any tool.
The site uses Vercel Web Analytics for anonymous, aggregate page-view counts (which pages get visited, roughly how often) — it does not see or record anything you type into a tool. This is separate from tool functionality, which stays 100% client-side regardless.
Any modern browser — Chrome, Firefox, Safari, Edge. The tools rely on standard browser APIs (crypto.subtle for hashing, the native JSON parser, FileReader for file uploads) that have been broadly supported for years.
Once a page has loaded, most tools keep working without a network connection, since all processing happens locally. A few tools (Markdown Previewer, Diff Viewer, Data Format Converter) load a small parsing library from a CDN on first visit, so those specifically need network access at least once.
Yes — the tool list grows over time. Check the sidebar or homepage for the current full list.
There's no in-app feedback form yet. For now, the most reliable path is reaching out through the site's social/contact links if listed, or checking back as fixes get shipped.
Most of the individual tools (a JSON formatter, a Base64 encoder, a JWT debugger) have single-purpose competitors that do roughly the same job. The difference here is having all of them in one place with a consistent interface and a Ctrl/Cmd+K command palette to jump between them, plus every tool sharing the same client-side-only privacy guarantee rather than it varying tool to tool.