dig +short buildtoolforge.com
Small, fast tools for the everyday networking and security questions.
Each tool comes with a plain-language tutorial underneath it, so you leave understanding the answer — not just copying it.
Tools
View allDNS & Networking
DNS Lookup
Look up A, AAAA, MX, TXT, and NS records for any domain.
Security
SSL Certificate Checker
Inspect a site's certificate, expiry date, and chain.
In progress
Security
Security Headers Scanner
Check for HSTS, CSP, X-Frame-Options, and other key headers.
In progress
HTTP
HTTP Status & Header Viewer
See the status code, response headers, and redirect chain for a URL.
In progress
Security
Rate Limit Calculator
Work out a sensible requests-per-second threshold for your traffic.
In progress
Browse by category
View allWhy BuildToolForge
Fast
Most tools run right in your browser — no server round-trip, no loading spinner.
Private by default
What you type stays on your device for any tool that doesn't need a lookup service.
Free
No paywalls, no premium tier, no account required to use anything here.
Frequently asked questions
Are these tools actually free?+
Yes — every tool on BuildToolForge is free to use, with no account, subscription, or usage cap.
Do I need to sign up?+
No. Every tool works the moment you open it — no account, email, or login required.
Is my data safe?+
Most tools run entirely in your browser, so what you type or upload never reaches our servers. A few tools (like DNS or certificate lookups) send only the specific query you enter to a lookup service to return a result — see the Privacy Policy for details.
Do the tools work on mobile?+
Yes, every tool is built to be fully usable on phones and tablets, not just desktop.
How often are new tools added?+
Regularly — new tools and categories are added based on what people are searching for and asking about.