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13 free tools · no sign-up

Free tools

Small, exact tools for people who fetch the web for a living. Six run entirely in your browser and never upload what you paste; five fetch through our scraping API from a residential IP, with a free daily quota and no account; one looks up an IP address on our servers. Each page says which it is.

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Free key, $2 of usage credit every month, no credit card.

By , founder of QuanticData · Published · Updated

Check a website

What crawlers, AI assistants and firewalls see when they reach a site, read live.

5 tools

Convert to clean text and code

Pages, PDFs, curl commands and obfuscated addresses turned into something you can use.

4 tools

Check an IP, a proxy or your browser

The address, the proxy and the browser a target sees before it decides anything.

4 tools

The thirteen free tools split by where they work: six run entirely in your browser tab with zero requests, five call one demo endpoint and two look an IP address up on our servers; the same jobs from code cost $0.0015 a page or $0.003 an audit.
The split the tools page describes, drawn: six tools whose work is a function chain in your own tab, five that have to fetch something you do not have locally (free per visitor here, $0.0015 a page or $0.003 an audit from the API) and two that look an IP address up on our servers.

Why these tools have no sign-up

The robots.txt tester and generator, the user agent page, the cURL converter, the proxy tester and the Cloudflare email decoder are JavaScript that runs on the page you are reading. There is no upload step and no account, because there is no server involved in the work: you can paste a robots.txt that is not published yet, or a curl command containing a live API key, without it leaving your machine. They keep working if our API is down, and we cannot rate-limit them.

The website and PDF converters, the WAF detector, the AI crawler checker and the AI visibility audit have to fetch something you do not have locally, so they call the same scraping API our customers use, through a residential IP with a real browser TLS identity. Those have a free daily quota per visitor, still no account, and the page you submit or the PDF you drop is processed and discarded, not stored.

What we build the rest of the time

QuanticData runs proxy networks and pay-per-success web data APIs — the infrastructure these tools describe from the outside. If a tool here answers your question, use it and go. If the answer turns out to be “this needs to run across ten thousand pages”, that is the other half of what we do:

  • Web scraping API — any page as clean Markdown, HTML or structured JSON.
  • SERP API — Google, Bing and DuckDuckGo results as structured data.
  • Crawl & map — discover every URL a site exposes, then fetch them.
  • SEO audit API — crawlability and on-page checks at site scale.
  • MCP server — the same APIs exposed as tools an AI agent can call itself.

About these tools

Are these tools really free?
Yes, and there is no account. The browser-only tools cost us nothing per use. The five that fetch through our API have a free daily quota per visitor, shown on the page, so they stay free without becoming somebody's scraping backend.

Is anything I paste uploaded?
For the robots.txt tester and generator, the user agent page, the cURL converter, the proxy tester and the Cloudflare email decoder: no, parsing, generation and decoding happen on the page, and the Network tab shows no requests. The website and PDF converters, the WAF detector, the AI crawler checker and the visibility audit send the URL or the PDF to our API, process it and discard it. The IP fraud score check sends the address you enter to our servers, which look it up.

Can I use them at work or in a commercial project?
Yes. Use the output however you like; no attribution is required, though a link is always welcome.

Do the tools work offline?
The six browser-only tools do: once a page has loaded, the logic is already there. The five that fetch a page or a robots.txt for you need the API, and so a connection.

Need the same thing across ten thousand pages?

That is what the APIs are for. Free key, $2 of usage credit every month, and you pay only for calls that return a usable result.

Get my free API key

Free key, $2 of usage credit every month, no credit card.