54 free SEO tools, no sign-up
Check a page's tags, test a redirect chain, look up DNS and SSL, generate schema and sitemaps, minify code and run the numbers. Every tool does real work and shows the result on the page.
- Tools
- 54
- Groups
- 7
- Cost
- Free
- Sign-up
- None
Page checkers
Broken Links Checker
Test up to 50 links on a page and list the broken, redirected and working ones with their HTTP status.
02 / Live checkCanonical Tag Checker
Find every canonical tag and Link header on a page and check it is absolute, self-referencing and free of conflicts.
03 / Live checkExternal Link Analyzer
List a page's outbound links by domain with anchor text, nofollow, sponsored and ugc values and unsafe target=_blank.
04 / Live checkHreflang Checker
List a page's hreflang tags, validate the codes, check x-default and self-reference, and confirm alternates link back.
05 / Live checkInternal Link Analyzer
List every internal link on a page with its anchor text, nofollow flag, duplicates, self-links and generic anchors.
06 / Live checkKeyword Density Checker
Count words and the top one-, two- and three-word phrases on a page or in pasted text, with the density of a target keyword.
07 / Live checkMeta Tag Analyzer
Check a page's title, meta description, canonical, robots, viewport, Open Graph and Twitter tags with a 0-100 score.
08 / Live checkOn-Page SEO Checker
Audit a page's title, headings, word count, image alt text, canonical, links, schema and speed with a 0-100 score.
09 / Live checkRedirect Checker
Trace a URL's redirect chain hop by hop, spot loops, meta refresh and JS redirects, and compare the http, https and www variants.
10 / Live checkRobots.txt Tester
Fetch a site's robots.txt and test whether a path is allowed or blocked for Googlebot or any user agent, with the matching rule.
11 / Live checkSchema Markup Validator
Extract and check a page's JSON-LD: types found, syntax errors with line and column, and missing required or recommended fields.
12 / Live checkXML Sitemap Validator
Validate an XML sitemap or index: well-formed XML, URL count, loc, lastmod, priority and changefreq, limits and live URL checks.
Search
Bing SERP Checker
Fetch Bing's results for a keyword in a chosen market and see where your domain ranks among them.
02 / In browserGoogle Allintitle Checker
Open the allintitle, intitle and plain Google searches for a keyword from any location and read how many titles compete.
03 / In browserGoogle Index Checker
Build the site: and exact-URL Google searches for up to ten pages and open them in your browser to see what is indexed.
04 / In browserGoogle Location SERP Viewer
Open Google as a searcher in any city or country (uule) with personalisation off, and check where a page really ranks.
05 / Live checkWebsite Down Checker
Check from our server whether a website is up: status code, response time, redirects, server header and DNS.
06 / Live checkYahoo SERP Checker
Fetch Yahoo Search results for a keyword in a chosen region and see where your domain ranks among them.
YouTube and names
Bulk URL Opener
Paste a list of links and open them all in new tabs with one click, cleaned and deduplicated, in your browser.
02 / Live checkUsername Checker
Check a username on Instagram, X, TikTok, GitHub, Reddit, Pinterest, YouTube, Twitch and more in one go.
03 / Live checkYouTube Handle Checker
Check whether a YouTube @handle is available or already taken, and see which channel owns it.
04 / Live checkYouTube Tag Generator
Generate YouTube tags from real autocomplete suggestions for your keyword, ranked and ready for the 500-character tag box.
05 / Live checkYouTube Video Tags Extractor
See the hidden tags of any YouTube video, with its title, channel, thumbnail and description, from a link or ID.
Domain and email
Blacklist Checker
Check whether an IP or mail server is listed on Spamhaus, SpamCop, Barracuda, SORBS and ten more DNS blacklists.
02 / Live checkDKIM Checker
Find and validate a domain's DKIM record by selector: tags, key type and size, test mode, or try the common selectors.
03 / Live checkDMARC Checker
Validate a domain's DMARC record: policy, subdomain policy, pct, reporting addresses, alignment and common mistakes.
04 / Live checkDNS Lookup
Look up the A, AAAA, CNAME, MX, NS, TXT, SOA, SRV and CAA records of any domain with their TTLs in one query.
05 / Live checkDomain to IP
Find the IPv4 and IPv6 addresses behind a domain, the reverse DNS name of each and a hint at the hosting provider.
06 / In browserEmail Header Analyzer
Paste raw email headers to see the delivery path hop by hop with delays, SPF, DKIM and DMARC results and spoofing warnings.
07 / Live checkReverse DNS Lookup
Find the PTR host name of an IPv4 or IPv6 address and check that it resolves back to the same address.
08 / Live checkSPF Checker
Validate a domain's SPF record: mechanisms, the include tree, the 10 DNS lookup limit, +all and syntax mistakes.
09 / Live checkSSL Certificate Checker
Check a site's TLS certificate: issuer, expiry and days left, SANs, chain, protocol and whether the host name matches.
10 / Live checkSubdomain Finder
List the subdomains of a domain found in certificate transparency logs, deduplicated, with the first 25 resolved to IPs.
11 / In browserUser Agent Parser
Decode a User-Agent string into browser and version, engine, operating system, device type and known crawler.
12 / Live checkWHOIS Lookup
Registrar, creation and expiry dates, name servers, status and DNSSEC for a domain, or the network owner of an IP.
Generators
Open Graph Tag Generator
Fill in a title, image, URL and description and get the Open Graph meta tags plus a preview of the share card.
02 / In browserRobots.txt Generator
Build a robots.txt with per-bot allow and disallow rules, crawl-delay and sitemap lines, from presets or by hand.
03 / In browserSchema Markup Generator
Create JSON-LD for Article, Organization, LocalBusiness, Product, FAQ, Breadcrumb, Event, Recipe, Video and more.
04 / In browserSlug Generator
Turn a page title into a clean, lowercase URL slug with stop words removed and a length you choose.
05 / In browserTwitter Card Generator
Generate twitter:card meta tags for summary, large image, player and app cards and see the card before you publish.
06 / In browserXML Sitemap Generator
Paste a list of URLs and get a valid sitemap.xml with lastmod, changefreq and priority, deduplicated and escaped.
Performance
CSS Minifier
Minify a stylesheet in your browser: comments, whitespace and trailing semicolons out, strings and url() kept intact.
02 / In browserHTML Minifier
Strip comments and collapse whitespace in HTML without touching pre, textarea, script or style blocks.
03 / In browserImage Compressor
Compress and resize JPEG, PNG and WebP images in your browser; nothing is uploaded, download them one by one or all.
04 / In browserImage Lazy Load Generator
Add loading="lazy" and decoding="async" to your img tags, keep the first ones eager, with an IntersectionObserver fallback.
05 / In browserJavaScript Minifier
Remove comments and blank space from JavaScript while leaving strings, templates and regexes untouched.
06 / In browserResponsive Image Generator
Build img srcset and sizes attributes, or a picture element with WebP and AVIF sources, from a file name and widths.
07 / In browserSVG Optimizer
Clean an SVG in your browser: editor metadata, comments, empty groups and long decimals out, preview before and after.
Content and metrics
Bounce Rate Calculator
Calculate bounce rate from sessions and single-page visits, or from GA4 engaged sessions, and compare with typical ranges.
02 / In browserCTR Calculator
Work out click-through rate from impressions and clicks, the clicks needed for a target CTR, and compare with Google averages.
03 / In browserConversion Rate Calculator
Calculate conversion rate, the visitors needed for a conversion target, and revenue per visitor from average order value.
04 / In browserHTML to Markdown Converter
Turn HTML into clean Markdown in your browser: headings, lists, links, images, tables and code, scripts and styles removed.
05 / In browserMarkdown to HTML Converter
Convert Markdown to clean HTML in your browser: headings, lists, tables, code blocks, links and images, with a preview.
06 / In browserWord Counter
Count words, characters, sentences and paragraphs, with reading time, speaking time and the top keywords by density.
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