150 free tools in 13 categories
One check. One answer. One fix.
Checkers that read what a domain publishes right now, generators that build the record or config you need, and PDF and image tools that run in your browser.
Showing 150 tools in for “”
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Popular tools
Broken Link Checker
Find dead links, 404s and broken images on a page and up to 10 pages it links to. See redirects, timeouts and anchor text, then export a CSV.
Website health & speed Open CheckerRedirect Checker
Test the 301 redirects on http, https, www and non-www. See every hop with its status, Location and time, plus 302s, chains, loops and a one-hop verdict.
Website health & speed Open ToolPassword Generator
Generate a strong password from a word you choose, a random-word passphrase or a random password. Shows entropy in bits. Runs in your browser; nothing is sent.
Security & SSL Open CheckerSPF Record Checker
Free SPF record check and lookup tool: see the full record, every mechanism explained, DNS lookups against the limit of 10, errors and a fixed record.
Email & deliverability Open CheckerDMARC Record Checker
Free DMARC record check and lookup: test any domain's DMARC policy, see every tag explained, verify report addresses and get the next record to publish.
Email & deliverability Open New CheckerAI Content Visibility Checker
Check whether ChatGPT search, Google AI Overviews, Copilot and Perplexity can read and quote a page: crawler access, text in HTML, direct answer, author, date, schema.
AI search OpenJust added
New tools
- AI Shopping Agent Readiness Checker AI search New
- Missed Call Revenue Calculator Business & calculators New
- Mixed Content Checker Security & SSL New
- Color Contrast Checker Images & design New
- Subdomain Finder Domain & DNS New
- MTA-STS, TLS-RPT & BIMI Checker Email & deliverability New
- Website Technology Checker Website health & speed New
- llms.txt Checker & Generator AI search New
- WHOIS Lookup Domain & DNS New
- Website Safety Checker (Is This Site Legit?) Security & SSL New
- SSL Certificate & CSR Decoder Security & SSL New
- Subnet Calculator Domain & DNS New
- Email Verifier Email & deliverability New
- WhatsApp Link Generator Local business & reviews New
- Privacy Policy Generator Business & calculators New
- Spin the Wheel – Random Name Picker Business & calculators New
- Color Palette Generator Images & design New
- XML to JSON Converter Developer New
- Google Review Link Generator Local business & reviews New
- Local Business Schema Generator Local business & reviews New
- NAP Consistency Checker Local business & reviews New
- Keyword Grouping Tool SEO New
- Bulk Redirect Checker Website health & speed New
- Google Maps Embed Generator Local business & reviews New
- AI Content Visibility Checker AI search New
- Invoice Generator Business & calculators New
- What Is My IP Address Domain & DNS New
SEO 18
Meta tags, schema, sitemaps, robots.txt, hreflang and on-page checks.
AI search 4
See whether ChatGPT, Perplexity and other AI crawlers can read and cite your site.
Local business & reviews 5
Review links, local business schema, NAP consistency and map embeds.
Email & deliverability 13
SPF, DKIM, DMARC, MX, blacklists and header analysis.
Security & SSL 9
SSL certificates, TLS, security headers, CSP and site safety.
Domain & DNS 7
DNS records, propagation, WHOIS, domain age and IP tools.
Website health & speed 8
Page speed, uptime, status codes, redirects and broken links.
Images & design 17
Compress, resize, convert and crop images, plus QR codes and colours.
PDF 10
Merge, split, compress, rotate and convert PDFs in your browser.
Writing & text 11
Word counts, readability, case conversion and text clean-up.
Developer 22
Formatters, encoders, converters, regex, cron and CSS helpers.
Business & calculators 22
Tax, pay, loans, margins, invoices and everyday calculators.
Audio & video 4
Convert, trim and extract audio, and turn clips into GIFs.
No tools match “”these filters
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Free website audit
See how your site scores, free
Speed, SEO, DNS, email (SPF/DKIM/DMARC) and security in one scan, with a prioritised fix list.