Tools that explain what they found
Free DNS, email, server and business tools. Every result comes with the reasoning, because a number you cannot interpret is not an answer.
- Popular:
- DNS Checker
- WHOIS Checker
- .htaccess Generator
- Nothing storedInput is processed and discarded
- Live, not cachedQueried from authoritative servers
What people reach for first
Ranked by real usage, not by what we would like you to click.
- DNS & Domain Tools DNS Checker Query A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records straight from the authoritative nameservers.
- DNS & Domain Tools WHOIS Checker See whether a domain is registered, who holds it, when it expires and which registrar manages it.
- Developer Tools .htaccess Generator Build Apache rules for HTTPS, www canonicalisation, WordPress permalinks, security and caching — with the traps flagged before you deploy.
- SEO Tools On-Page SEO Checker Audit any page against 14 on-page factors and get a graded report explaining what each one means.
- DNS & Domain Tools SSL Certificate Checker Connect to any site over TLS and read its certificate: who issued it, when it expires and which hostnames it covers.
- SEO Tools Redirect Checker Follow every hop between a URL and its destination, with the status code and timing for each one.
DNS & Domain Tools 4 tools
Look up what the internet already knows about a domain.
- DNS Checker Query A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records straight from the authoritative nameservers.
- WHOIS Checker See whether a domain is registered, who holds it, when it expires and which registrar manages it.
- SSL Certificate Checker Connect to any site over TLS and read its certificate: who issued it, when it expires and which hostnames it covers.
- HTTP Header Checker Fetch any site's response headers, check the six security headers that matter, and see how fast the server replied.
Email Deliverability 1 tool
Find out why your mail lands in spam.
Developer Tools 10 tools
Generators and converters that save you looking up syntax.
- .htaccess Generator Build Apache rules for HTTPS, www canonicalisation, WordPress permalinks, security and caching — with the traps flagged before you deploy.
- robots.txt Generator Build a robots.txt for WordPress, an online store or a general site, with sitemap declaration and optional AI crawler blocking.
- Meta Tag Generator Generate the full head block for a page, with live character counts against the limits that actually apply.
- JSON Formatter & Validator Format JSON for reading, minify it for shipping, and get a specific explanation when it fails to parse.
- Password Generator Generate passwords using the operating system random source, with look-alike characters excluded.
- Hash Generator Generate checksums in six algorithms, with a clear note on which are safe for what.
- Base64 & URL Encoder Convert text between Base64, percent-encoding and HTML entities in both directions.
- UUID Generator Generate random UUIDs, with a note on what they cost as database keys.
- URL Slug Generator Convert a title into a URL-safe slug, with optional stop-word removal.
- .htpasswd Generator Generate a bcrypt-hashed user line plus the matching .htaccess block.
Business Calculators 7 tools
The numbers behind pricing, margin and capacity decisions.
- Profit Margin Calculator Enter cost and selling price to get margin, markup and cost ratio, with the difference made explicit.
- Loan & EMI Calculator Monthly payment, total interest and a first-year schedule showing how little early payments touch the principal.
- Break-even Calculator Work out how many units you must sell before the business stops losing money.
- Sales Tax / VAT / GST Calculator Add tax to a net figure or extract it from a gross one, with both directions shown.
- Percentage Calculator X% of Y, X as a percentage of Y, and percentage change from X to Y.
- ROI Calculator Compare investments on return, payback and annualised terms rather than headline percentage alone.
- Freelance Hourly Rate Calculator Work backwards from target income, expenses, tax and billable hours to the minimum rate that supports them.
Hosting & Server Tools 3 tools
Capacity, uptime and cost maths for people who run servers.
- Uptime & SLA Calculator Convert an uptime percentage into the downtime it allows per day, week, month, quarter and year.
- Bandwidth Calculator Estimate monthly data transfer from visits, pages per visit and page weight, with headroom and growth projection.
- Server Cost Per Account Calculator Work out what each hosting account really costs once licences and overhead are counted, plus lifetime value.
SEO Tools 8 tools
Audit what your pages actually publish — titles, headings, redirects, sitemaps and robots rules.
- On-Page SEO Checker Audit any page against 14 on-page factors and get a graded report explaining what each one means.
- Keyword Density Checker See which words and phrases a page actually emphasises, and whether that matches what you intended.
- Redirect Checker Follow every hop between a URL and its destination, with the status code and timing for each one.
- Sitemap Checker Fetch and validate an XML sitemap, count its URLs and flag the limits that make search engines ignore it.
- Robots.txt Tester Fetch a live robots.txt and test whether a specific crawler is allowed to reach a specific path.
- SERP Snippet Preview See how a title and description will look in search results, measured in pixels rather than characters.
- Broken Link Checker Test every link on a page and see which ones return errors, with the status code for each.
- Meta Tag Generator from Keywords Turn a keyword and a benefit into title options, a meta description and a full head block, sized to fit.
Everything people ask before they trust a free tool
Fair questions, all of them. Free tools have a habit of being free for a reason, so here is exactly how this one works, what happens to what you type, and where the numbers come from.
- Nothing is stored. Values you enter are processed and discarded — no database row, no log line.
- Live queries, never cached. Lookups hit authoritative servers, so you see changes before your own machine does.
- No account, no quota. Every tool works on the first visit and the thousandth.
Are these tools really free?
Yes. Every tool works without an account, without a query quota and without a paid tier. The site is funded by advertising, which has no influence on what any tool reports — results come from your input and from what live servers return.
Do you store what I type into the tools?
No. Values you enter are processed to produce a result and then discarded. Nothing is written to a database and nothing appears in any report. The only thing recorded is a counter of how many times each tool has run, which holds no information about who ran it or what they entered.
Why do your DNS results differ from what I see locally?
Your computer and your ISP cache DNS answers and keep serving them until the TTL expires. These tools query authoritative nameservers directly, so they see a change before you do. During the first hours after an edit, the difference is expected rather than an error.
Can I use the generated configuration commercially?
Yes. Generated output — .htaccess files, robots.txt, meta tags, hashes, calculator results — is yours to use freely, with no attribution required. It was produced from your input for your use.
How accurate are the results?
Lookups query live third-party systems, which can be slow, rate limited or temporarily inconsistent. Treat results as a strong indication rather than a certified fact, and verify anything consequential — a domain purchase especially — against a second source.
Do I need to know what I am doing to use these?
No, and that is deliberate. Each tool page includes a worked example with real input and output, an explanation of how to read the result, and the mistakes that are easy to make. The tool is the starting point; the page around it is the actual help.
Who runs Free SEO, DNS & Email Tools — Web Tool Bench?
A single developer, not a company with a content team. The [about page](https://www.webtoolbench.com/about) has the details, and the [contact page](https://www.webtoolbench.com/contact) is the way to reach us. Corrections and tool suggestions are genuinely welcome.