Every developer keeps a tab open with the essentials. Here are ten that earn their place in your bookmarks bar.
The shortlist
- JSON Formatter - beautify and validate JSON instantly.
- Regex Tester - build and debug patterns in real time.
- Base64 Encoder - encode/decode without a terminal.
- JWT Decoder - inspect token claims at a glance.
- Hash Generator - MD5, SHA-1 and SHA-256.
- Diff Checker - compare two blobs of text side by side.
- URL Shortener - clean links for docs and demos.
- QR Generator - quick codes for mobile testing.
- Color Converter - HEX ↔ RGB ↔ HSL in one box.
- Lorem Ipsum - placeholder copy on demand.
Why bundle them
Context-switching between a dozen random sites is friction. Toolknot puts the essentials behind one fast, private interface so you stop hunting and start shipping.
{
"tip": "Bookmark /tools and pin the tab.",
"saved_clicks_per_day": 42
}
Keep them one keystroke away and your future self will thank you.
Frequently asked questions
Start with a JSON formatter, regex tester, base64 encoder, JWT decoder and hash generator - they cover the most common day-to-day tasks for engineers.
Yes. All of these tools are free to use on Toolknot, and most run instantly in your browser with no account needed.