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2xKit

SEO & Web Tools

Generate meta tags, sitemaps, robots.txt files, structured data and other on-page SEO essentials, all built and previewed instantly in your browser, no crawler, no account, no server round-trip.

26 tools

Alt Text Bulk Checker

Scan pasted HTML for images missing alt text.

Anchor Text Analyzer

Paste HTML and classify every link's anchor text as branded, exact-match, generic or a naked URL.

Aspect Ratio Calculator

Simplify an aspect ratio and scale dimensions to a target width or height.

New

Blog Post Outline Generator

Turn a topic into a structured H2/H3 blog post outline template.

Canonical URL Checker

Check a page's HTML for a missing, duplicate, or mismatched canonical tag.

Duplicate Content Checker

Compare two blocks of text and see how similar they are.

Heading Structure Analyzer

Paste HTML and see its H1-H6 heading outline, flagging missing or skipped levels.

Hreflang Tag Generator

Generate hreflang link tags for multi-language and multi-region pages.

JSON-LD Validator

Check JSON-LD structured data for common errors.

Keyword Combination Generator

Combine seed keywords with modifiers to generate long-tail keyword ideas.

Keyword Density Checker

Find how often each word appears in your content, as a percentage.

Keyword Gap Finder

Compare two texts to find keywords one uses that the other doesn't.

New

Meta Robots Tag Generator

Generate a page-level meta robots tag from index/follow options.

Meta Tag Generator

Generate title, description, Open Graph and Twitter Card meta tags.

Meta Title & Description Checker

Check whether your title and meta description fit Google's recommended length.

Open Graph & Twitter Card Preview

Preview how a link will look when shared on Facebook, LinkedIn and X.

Readability Score Checker

Check your text's Flesch reading ease and grade level.

Rich Snippet Preview Generator

Preview how a page might appear as a rich result in search, from its structured data fields.

Robots.txt Generator

Generate a robots.txt file to control search engine crawling.

Robots.txt Tester

Paste a robots.txt file and test whether a path is allowed for a given user agent.

Schema Markup Generator

Generate JSON-LD structured data for FAQs, products, articles and more.

SERP Preview

Preview how your page will look in Google search results.

Sitemap Generator

Generate an XML sitemap from a list of page URLs.

Title Tag Pixel Width Checker

See whether your title tag fits within Google's search result pixel width.

URL SEO-Friendliness Checker

Check a URL for length, hyphens, stop words and other SEO-friendliness signals.

Web Manifest Generator

Generate a web app manifest.webmanifest file.

Privacy

Every SEO tool runs entirely in your browser. The URLs, page titles and content you enter to generate meta tags, sitemaps or schema markup are processed locally and never sent to a server.

Frequently asked questions