Paste it. Fix it.Never upload it.
68 free tools for text, code, colors, numbers, and the web. Whether you are a developer, a designer, or just need something converted, it runs instantly in your browser and your data stays on your machine.
Paste your data and it opens the right tool with the result ready, or type a word to search. No account, no install, nothing to learn.
Use it from your agent. No copy-paste.
The network tools, the ones that reach real infrastructure, are available over MCP. Point Claude or any MCP client at toolhq and it can run a DNS, SSL, or IP check on its own. The local tools keep running in your browser.
$ claude mcp add toolhq https://toolhq.io/api/mcp
{
"mcpServers": {
"toolhq": {
"url": "https://toolhq.io/api/mcp"
}
}
}Compatible coding agents
claude mcp add --transport http toolhq https://toolhq.io/api/mcp
Every tool. All free.
68 utilities that load instantly. Search below or browse by category. Most run entirely in your browser; network tools say exactly where your data goes.
Loading tools…
Three steps. Ten seconds.
- 01
Pick a tool
Search or browse 68 tools for text, code, colors, numbers, and the web. Every one loads instantly.
- 02
Paste your data
JSON, a token, a color, a cron expression. It is processed right in your browser, not on a server.
- 03
Copy the result
Live output with one click copy. No account, no install, no waiting, and nothing left behind.
Guides for the things you debug.
Practical, no-fluff writing on JSON, JWTs, DNS, SSL, regex, and more — written alongside the tools that fix them.
How to check how strong a password really is
What password strength actually measures, why length beats symbol checklists, how crack-time estimates work, and why a checker must run locally in your browser.
Convert CSV to JSON: headers to keys, rows to objects
How a CSV file maps to a JSON array of objects, what happens to types along the way, and the quoting, empty cell, and BOM traps that break naive conversions.
HEX, RGB, and HSL: how to convert colors between formats and when to use each
What HEX, RGB, and HSL actually represent, how conversion between them works, how alpha fits in, and the shorthand and rounding gotchas that trip people up.
Your data never leaves
your browser.
Local by default
Formatters, decoders, and generators run as plain JavaScript on your machine. Turn off your wifi and they still work.
No tracking, no accounts
No tracking cookies, no ad pixels, no sign ups. Page views are counted anonymously and that is all. Local storage stays on your device for your theme, language, and recently used tools. The in-browser tools store nothing.
Safe for secrets
JSON, tokens, and unreleased work are safe to paste into the local tools. There is no server on the other end to leak them.
Asked often, answered plainly.
Is toolhq really free?
Yes, every tool is free with no usage limits, no premium tier, and no account to create. The site exists because these tools should just be available.
Is my data uploaded anywhere?
No. The tools run as JavaScript in your browser, so what you paste never leaves your machine. The few tools that need the network (like the API tester and DNS lookup) say exactly where requests go, right on the page.
Do the tools work offline?
Most do. Once a tool page has loaded, formatters, converters, encoders, and generators keep working with no connection at all, because there is no server involved.
Is it safe to paste API keys, tokens, and production data?
For the local tools, yes: there is no server on the other end to log or leak them. Each tool states its privacy behavior in a badge at the top of the page, so you always know before you paste.
How is toolhq different from other online tool sites?
No ads, no popups, no cookie walls, no accounts, and no tracking. Tools load instantly, the privacy promise is real, and the whole site is built to get you back to work as fast as possible.