Free tools
Free tools to keep your website healthy
Website, email, domain, security, accessibility, privacy law: quick checks and utilities, no sign-up.
Analyze a website
One address is enough: security, speed, accessibility, SEO, privacy law.
Security
SSL certificate
Issuer, expiry, chain and HTTPS redirects.
Try it →Redirects & HTTPS
http, https, with or without www: does it all lead to one address? Redirect chains and mixed content.
Try it →Security headers
An A to F grade for the protections your site sends.
Try it →Flagged as dangerous?
Has Google flagged your site for phishing or malware? Chrome's red screen, checked.
Try it →Down or just me?
We try the site from Montreal: DNS, connection, response time, certificate, and a plain verdict.
Try it →Who hosts this site?
A site's host, CDN, CMS and server at a glance.
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Speed
Accessibility
Page accessibility
Images without alt text, unlabelled fields, empty links, headings out of order, zoom blocked.
Try it →Listen like a screen reader
Your page read aloud, item by item, the way a blind person hears it, with the problems flagged.
Try it →Keyboard navigation
Every Tab stop, in order: unreachable elements, skip link, removed focus outline.
Try it →Your page, seen differently
Colour blindness, low vision, cataracts, a screen in the sun: your page next to the normal view.
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SEO and presentation
On-page SEO check
Title, description, headings, image alt text: what Google reads on your page.
Try it →Your site as a bot sees it
The text Google and AI tools read, without styles or JavaScript: hidden content, script-only pages, AI bots allowed.
Try it →AI crawlers: what do you let through?
GPTBot, ClaudeBot, Google-Extended and more: what your robots.txt allows, plus a generator to choose.
Try it →Share preview
Your link on Facebook, LinkedIn, iMessage and Google.
Try it →Favicon & icons
Are all expected icon sizes there?
Try it →Does your 404 page tell the truth?
A real 404 or a “soft 404” that fools Google? And does your error page help visitors move on?
Try it →Does your site look abandoned?
Old ©, frozen news, past events, COVID notices: an A to F grade.
Try it →Broken links
We crawl your site and list the links and images that no longer lead anywhere.
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Privacy law and language
Domain and email
Does your email get delivered? Is your domain in good shape, and who holds the keys?
SPF, DKIM & DMARC checker
Emails landing in spam? We read your domain's setup and explain what to fix.
Try it →Live email test
Send us an email and see how it landed: SPF, DKIM, DMARC, spam score.
Try it →Blacklist check
Is your mail server listed on Spamhaus, Barracuda, SpamCop and others?
Try it →Incoming mail check
Do your MX servers accept an encrypted connection with a valid certificate? MTA-STS and TLS-RPT too.
Try it →BIMI: your logo in Gmail
What's missing to show your logo next to your emails.
Try it →Email signature generator
A clean signature that displays well in Gmail, Outlook and Apple Mail: real text, a tappable number, your logo.
Try it →Your email in dark mode
Paste your signature or newsletter: see it the way Gmail, Outlook and Apple Mail show it in dark mode.
Try it →Email list cleaner
Duplicates, malformed addresses, typos like gmial.com: drop your CSV, download it clean. Nothing leaves your computer.
Try it →SPF & DMARC generator
Tick the services that send on your behalf: your SPF and DMARC records, ready to copy.
Try it →DMARC report reader
Drop the XML report from Google or Microsoft: who sends as you, in plain words.
Try it →Email header analyzer
Paste a suspicious email's headers: real sender, SPF, DKIM, DMARC, route and misleading links.
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Domain
Domain health check
Expiry, name servers, DNSSEC, CAA: is the domain in good shape?
Try it →Who holds the keys to your website?
Registrar, DNS, hosting, email, sending services: a map of the accounts your domain depends on, plus a sheet to print.
Try it →Certificates issued for your domain
Subdomains, issuers and recent certificates from the public logs; subdomains open to takeover flagged.
Try it →DNS propagation
Is your DNS change visible around the world?
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Utilities
Files and text to prepare or repair. Almost everything runs in your browser: nothing is sent.
Documents and text
Is this PDF accessible?
Tags, title, language, real text or scan, alt text: your PDF checked in your browser.
Try it →Fix broken accents
Text full of “é” and “’”? Paste it and get the right characters back.
Try it →Clean up text pasted from Word
Paste from Word or Google Docs, get clean HTML ready for WordPress.
Try it →Excel to accessible HTML table
Paste cells from Excel or Google Sheets: a real HTML table with headers, caption and properly formatted numbers.
Try it →Remove photo metadata
GPS location, camera, date: see what a photo reveals and download a clean copy.
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Design and embedding
Colour contrast
Two colours, a WCAG ratio, a verdict.
Try it →Palette contrast
Your whole palette at once: the pairs that work for text, headings and buttons.
Try it →Privacy-friendly YouTube and Vimeo embed
Paste a YouTube or Vimeo link: an embed code that loads nothing until the visitor clicks.
Try it →Organization card for Google
Name, address, opening hours: the JSON-LD code to paste into your site.
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Before you click
Lookalike characters
Disguised Cyrillic letters, invisible characters, punycode: does a link imitate a brand?
Try it →Read a QR code safely
Camera or photo: where the code leads, before opening it. Against fake parking-meter codes.
Try it →Pwned password?
Check whether it leaked, without ever sending it anywhere.
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My connection
Your IP address, your device's clock, your VPN.
My connection
My IP address
Your public IP address, its internet provider, its country, and whether it is blacklisted. Nothing is kept.
Try it →Is your device's clock right?
Your clock compared with the official time, to the tenth of a second: the hidden cause of refused two-step codes.
Try it →Is your VPN leaking your address?
The address our server sees compared with the one WebRTC reveals: the classic VPN leak, checked.
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Explain it to me
An error message or a file to make sense of, in plain words.
Error messages
Email bounce translator
550 5.7.26, 4.7.0, 5.1.1: what the bounce message says, and who needs to act.
Try it →Explain this browser warning
“Not private”, ERR_…, 403, red screen: what it means, for the visitor and for the site.
Try it →Explain this .htaccess
Every line explained in plain words, with lines typical of a hack flagged.
Try it →
