Help & FAQ

Every tool runs 100% in your browser. When you type, paste or load a file, the processing (parsing, hashing, encoding, diffing…) happens in your browser's JavaScript engine. Nothing is uploaded, transmitted, logged or stored on any server.

You never need an account. The only things saved on your device are a few localStorage preferences: your theme, a short list of recently used tools, a demo plan flag, and your cookie choice. All of it can be cleared from your browser settings at any time.

Open the Tools menu in the header and pick a utility — or browse by category. Each tool page has the same shape:

• An input area on the left where you type, paste or pick a file.
• Options and presets for the format you want (e.g. uppercase vs. lowercase).
• A live-result area on the right — most tools compute as you type.
• Copy and download buttons on every result block.
• A short guide and FAQ beneath the tool to explain the output.

Many tools keep their state in the URL, so you can bookmark or share a link that reopens the tool pre-filled — for example /base64?mode=encode.

Handy offline-reference tables and cheat sheets, grouped for quick lookup:

• HTTP status codes
• ASCII table
• Regex cheat sheet
• Markdown cheat sheet

• Copy isn't working. Your browser may be blocking clipboard access. Use the buttons, or select and copy manually. On Safari (macOS/iOS) copying can require an explicit user gesture.
• Huge inputs feel slow. Very large files are processed locally, so performance depends on your device. Try a smaller sample to verify output first.
• An older browser behaves oddly. We support current versions of Chrome, Edge, Firefox and Safari. Enable automatic JavaScript if it is disabled.
• Results disappeared. Closing the tab clears everything — nothing is persisted server-side by design. Use the download button to keep results you need.