SEO tools

Inspect a public page’s title, headings, canonical, image descriptions and crawl directives.

Compare two pages using the same on-page markup checks, with the differences side by side.

Read page titles, descriptions, robots directives and social metadata from HTML or a public URL.

Check the response status of links found on a public page. Separate missing links from blocked or timed-out requests.

Check image URLs found in a page and identify missing files, blocked requests and empty image sources.

Trace HTTP redirects and inspect each status, destination and HTTPS downgrade.

Inspect canonical declarations and compare them with the final page address.

Check certificate trust, validity dates, issuer and host names for a public HTTPS website.

Read registration and expiry dates from the domain registry’s RDAP service.

Find missing, empty or repeated H1 elements in page source.

Map H1–H6 headings and spot skipped levels and empty headings.

Inspect the document language declaration and check its language-tag syntax.

List images with missing, empty or supplied alt text so you can review their purpose.

Read viewport metadata and check for device-width support and restrictions on zoom.

Inspect meta robots and response-header directives that can prevent indexing.

Inspect Open Graph and Twitter card fields without loading third-party preview images.

Extract links, anchor text and rel values, with internal and external destinations separated.

Extract email addresses published in visible text and mailto links on a page or a bounded site scan.

Measure the HTML response size and timing, excluding images, scripts and other page resources.

Measure readable text against the HTML source size. Treat the ratio as a diagnostic, not a ranking target.

Fetch and inspect crawler groups, path rules and sitemap declarations in robots.txt.

Look for sitemap declarations in robots.txt and check common sitemap locations.

Read tags exposed in a public YouTube page’s metadata, or inspect a pasted page source.

Count single words and two- or three-word phrases in text, with an optional common-word filter.

Count words, characters, sentences, paragraphs and estimated reading time.

Estimate reading and speaking duration using adjustable words-per-minute rates.

Build crawler groups, allow and disallow rules, and sitemap declarations from explicit inputs.

Create an escaped XML sitemap from a URL list or the pages found by a bounded same-host scan.

Create an image sitemap from page/image pairs or image URLs discovered on scanned pages.

Build a video sitemap with page, thumbnail, title, description and video or player URLs.

Prepare JSON-LD for common content types and validate its JSON structure before exporting.

Create reciprocal HTML, XML and HTTP-header language alternatives from matching page versions.

Create escaped Open Graph and social card tags with a text preview.

Create Twitter/X card metadata with title, description, image and optional account handles.

Generate title, description, canonical, robots and social metadata from page details.

Preview an approximate search-result title, description and display URL before publishing.

Review title and description lengths with an illustrative search snippet.

Turn a title into a Unicode-aware URL slug with configurable case and separators.

Create correctly encoded UTM links while preserving existing query parameters.

Draft a Markdown overview and link directory for an llms.txt file.

Generate Apache or Nginx redirects for explicit source paths and destination URLs.

Estimate the number of additional five-star reviews needed to reach a target average.