Free SEO tools

Titles, descriptions, headings, indexing signals and structured data of a single page.

• Title Tag CheckerCheck the title tag of any page – is it there, is it unique on the page and is its length right for search results?
• Meta Description CheckerCheck the meta description of a page – present, unique and of a length that fits search results.
• Meta Tags CheckerSee every meta tag of a web page in one list – name, property and content, evaluated and ready to compare.
• Heading Structure CheckerCheck the H1 and the heading structure of a page – one clear main heading and a logical order of H2 to H6.
• Canonical Tag CheckerCheck the canonical tag of a page – is it set, is it a valid absolute URL and does it point where you expect?
• Noindex CheckerFind out whether a page may appear in search results – meta robots, X-Robots-Tag header and robots.txt in one check.
• Robots.txt CheckerCheck the robots.txt of a website – is it reachable, which rules does it contain and does it block the page you entered?
• XML Sitemap CheckerCheck an XML sitemap – reachable, well-formed, how many URLs it lists and whether it is a sitemap index.
• Schema Markup CheckerFind the structured data of a page – JSON-LD, microdata and the schema.org types it declares.
• Open Graph CheckerCheck the Open Graph tags of a page – title, description, image and URL used when the page is shared.
• Image Alt Text CheckerFind images without alt text on a page – important for accessibility and for image search.
• SEO-Friendly URL CheckerCheck whether a URL is easy to read and share – length, characters, parameters and word separators.
• 404 Page CheckerCheck whether a site answers missing pages with a real 404 status instead of a soft 404 or a redirect.
• Language Attribute CheckerCheck the lang attribute of a page – set on the html element and a valid language code?
• Favicon CheckerCheck whether a website has a favicon – declared in the HTML or at the default location, and reachable.
• Social Links CheckerFind the links to social network profiles on a page – which networks are linked and where they point.

How much text a page has, which words it repeats and what readers and crawlers actually see.

• Word Count CheckerCount the words of any web page – the visible text only, without navigation code, scripts and styles.
• Keyword Density CheckerSee which words a page uses most often and how often – a quick look at the focus of its text.
• Text to HTML Ratio CheckerCompare the visible text of a page with the size of its HTML – a rough sign of thin content or bloated markup.
• Website Text ExtractorGet the visible text of a web page as plain text – without HTML, scripts and styles, ready to read or copy.
• Plain-Text Email CheckerFind email addresses written as plain text on a page – an easy target for spam harvesters.

Internal and external links, risky link targets and the path a URL takes through redirects.

• Internal Links CheckerList the internal links of a page – how many there are and where they lead within the same website.
• External Links CheckerList the outgoing links of a page – how many there are, which domains they lead to and how they are marked.
• Unsafe External Links CheckerFind links that open in a new tab without rel="noopener" – they let the other page control yours.
• URL Redirect CheckerFollow the redirects of a URL hop by hop – status codes, targets and the final address.

Response time, page weight, compression, protocol and the resources that slow a page down.

• TTFB CheckerMeasure the time to first byte of a page – how quickly the server starts to answer.
• Page Size CheckerCheck how large the HTML of a page is – transfer size and uncompressed size, with a rating.
• DOM Size CheckerCount the HTML elements of a page – a large DOM makes rendering and interaction slower.
• HTTP/2 CheckerCheck whether a website is served over HTTP/2 – faster loading of many files over one connection.
• Compression CheckerCheck whether a server compresses its pages – Gzip, Brotli or Zstandard, or none at all.
• Brotli CheckerCheck whether a server supports Brotli compression – usually smaller than Gzip for text files.
• HTTP Requests CheckerCount the scripts, stylesheets, images and other files a page loads – fewer requests load faster.
• JavaScript Defer CheckerFind scripts that block rendering – external scripts without defer or async in the HTML of a page.
• Image Format CheckerCheck whether the images of a page use modern formats such as WebP or AVIF instead of large JPEG and PNG files.
• Lazy Loading CheckerCheck whether the images of a page are lazy loaded – images further down only load when they are needed.

Certificate, security headers, mixed content and other signals that browsers and visitors trust.

• SSL Certificate CheckerCheck the SSL/TLS certificate of a domain – issuer, validity, expiry date and the names it covers.
• HSTS CheckerCheck the Strict-Transport-Security header of a site – set, how long it applies and whether subdomains are included.
• Content Security Policy CheckerCheck the Content Security Policy of a page – is the header set and which sources does it allow?
• Referrer Policy CheckerCheck the Referrer-Policy of a page – how much of its address is passed on when visitors follow a link.
• Server Signature CheckerCheck whether a server reveals its software and version in the Server header – useful information for attackers.
• Mixed Content CheckerFind resources loaded over plain HTTP on an HTTPS page – browsers block or flag them.
• Unsafe Forms CheckerFind forms on a page that send data over plain HTTP – passwords and personal data must travel encrypted.
• Safe URL CheckerCheck whether a URL is listed for malware, phishing or unwanted software by Google Web Risk.

Response headers, HTML basics and the markup details that browsers and crawlers depend on.

• HTTP Headers LookupSee the HTTP response headers of any URL – status, caching, security headers and server details.
• Doctype CheckerCheck whether a page declares a doctype – without it, browsers render in quirks mode.
• Meta Charset CheckerCheck the character encoding of a page – declared in the HTML and set to UTF-8?
• Meta Viewport CheckerCheck the viewport meta tag of a page – required for a proper layout on phones and tablets.
• Meta Refresh CheckerFind meta refresh tags on a page – automatic reloads and redirects that confuse visitors and crawlers.
• Deprecated HTML Tags CheckerFind outdated HTML elements such as center, font or marquee on a page.
• Inline CSS CheckerCount inline style attributes on a page – they make the HTML heavier and harder to maintain.
• Website Reachability TestTest whether a website answers right now – status, connection time, TLS handshake and time to first byte.

DNS records, mail sender rules, domain registration data and who operates an address.

• DNS LookupLook up the DNS records of a domain – A, AAAA, CNAME, MX, NS, TXT and more in one list.
• SPF CheckerCheck the SPF record of a domain – present, unique and which servers may send mail for it.
• Domain WHOIS LookupLook up the registration data of a domain – registrar, creation and expiry date, status and name servers.
• IP Address LookupLook up an IP address – the network it belongs to, the owner, the country and its reverse DNS name.
• Reverse DNS LookupFind the host name of an IP address through its PTR record – the reverse of a DNS lookup.
• Website Hosting CheckerFind out who hosts a website – the IP addresses of the domain and the networks they belong to.

How a page could appear as a result in different search engines, based on its title and description.

• Google Search PreviewPreview how a page could look in Google results – title and description from the page, shortened like a result.
• Bing Search PreviewPreview how a page could look in Bing results – title and description from the page, shortened like a result.
• Yandex Search PreviewPreview how a page could look in Yandex results – title and description from the page, shortened like a result.
• Yahoo Search PreviewPreview how a page could look in Yahoo results – title and description from the page, shortened like a result.

Minifiers, counters and generators that run entirely in your browser; your input never leaves it.

• HTML MinifierMinify HTML in your browser – remove comments and extra whitespace. Your code never leaves your device.
• CSS MinifierMinify CSS in your browser – remove comments, whitespace and the last semicolons. Nothing is uploaded.
• JavaScript MinifierMinify JavaScript in your browser – remove comments and whitespace. Your code is never uploaded.
• Word CounterCount words, characters, sentences and paragraphs of any text – directly in your browser, nothing is uploaded.
• URL Encoder and DecoderEncode text for use in a URL or decode percent-encoded addresses – instantly in your browser.
• Slug GeneratorTurn a title into a clean URL slug – lowercase, hyphens, no special characters. Runs in your browser.
• Meta Tag GeneratorGenerate the meta tags for a page – title, description, robots, canonical and Open Graph – ready to copy.
• Robots.txt GeneratorCreate a robots.txt file – rules per crawler, blocked paths and the sitemap address, ready to download.
• UTM BuilderBuild campaign links with UTM parameters – source, medium, campaign, term and content – in your browser.