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Free SEO Tools
Professional, privacy-friendly utilities for meta tags, schema, keyword analysis, robots.txt, SERP previews, and viral developer helpers—optimized for classic search, AEO, and GEO workflows.
Featured tools
High-intent SEO and viral utilities teams open every week—built for speed and clear answers.
Google SERP Preview
Preview how title tags and meta descriptions may appear in search results and check character limits.
Meta Tag Generator
Generate optimized meta tags including title, description, keywords, and social media tags.
Keyword Density Checker
Analyze keyword density and phrase frequency in your content to optimize for search engines.
Robots.txt Generator
Generate robots.txt files to control how search engine crawlers access your website.
JSON-LD Validator
Validate JSON-LD structured data syntax in the browser.
UTM Link Builder
Build campaign URLs with utm_source, utm_medium, and utm_campaign for trackable organic and paid traffic.
Password Generator
Generate strong, secure passwords with customizable length and character types.
Word Counter
Count words, characters, sentences, and paragraphs instantly with detailed statistics.
Trending & popular
Word Counter
Count words, characters, sentences, and paragraphs instantly with detailed statistics.
Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more formats instantly.
URL Slug Generator
Generate SEO-friendly URL slugs from titles or text. Convert to lowercase with hyphens automatically.
Reverse Text
Reverse text characters, words, or lines instantly.
JSON Formatter & Validator
Format, beautify, validate, and minify JSON data. Detect errors and view structured JSON instantly.
XML Formatter & Validator
Format, beautify, and validate XML documents. Detect errors and view structured XML with proper indentation.
Text
Writing and analysis helpers for word counts, readability, case conversion, and text cleanup—useful for content teams and editors.
Word Counter
Count words, characters, sentences, and paragraphs instantly with detailed statistics.
Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more formats instantly.
URL Slug Generator
Generate SEO-friendly URL slugs from titles or text. Convert to lowercase with hyphens automatically.
Reverse Text
Reverse text characters, words, or lines instantly.
Line Counter
Count the number of lines in your text instantly.
Remove Duplicate Lines
Remove duplicate lines from text while preserving original order.
Alphabetical Sort
Sort lines alphabetically in ascending or descending order.
Character Counter
Count characters with and without spaces for social media and meta tags.
Sentence Counter
Count sentences in your text for readability analysis and content structure.
Paragraph Counter
Count paragraphs in your text for content structure analysis.
Reading Time Calculator
Calculate estimated reading time based on word count and reading speed.
Word Frequency Analyzer
Analyze word frequency and identify most common words in your text.
Text Statistics
Get comprehensive text statistics including word frequency and character distribution.
Code
Lightweight formatters and validators for JSON, HTML, CSS, and related developer workflows.
JSON Formatter & Validator
Format, beautify, validate, and minify JSON data. Detect errors and view structured JSON instantly.
XML Formatter & Validator
Format, beautify, and validate XML documents. Detect errors and view structured XML with proper indentation.
HTML Minifier
Minify HTML code by removing whitespace, comments, and unnecessary characters to reduce file size.
CSS Minifier
Minify CSS code by removing whitespace, comments, and unnecessary characters to improve performance.
JavaScript Minifier
Minify JavaScript code by removing whitespace, comments, and shortening variable names.
SEO
On-page and technical SEO utilities for titles, meta, schema, robots, links, and content signals used in Google Search optimization.
Meta Tag Generator
Generate optimized meta tags including title, description, keywords, and social media tags.
Open Graph Generator
Generate Open Graph meta tags for optimized social media sharing on Facebook and LinkedIn.
Twitter Card Generator
Generate Twitter Card meta tags for optimized sharing on Twitter and X.
Readability Checker
Check readability scores including Flesch-Kincaid, Gunning Fog, and other metrics.
Keyword Research Tool
Discover profitable keywords with search volume, competition, and difficulty metrics.
Internal Link Checker
Analyze internal linking structure to improve site navigation and SEO performance.
External Link Checker
Check external links on your website for broken links and SEO issues.
Broken Link Checker
Find and fix broken links on your website to improve user experience and SEO.
Redirect Checker
Check HTTP redirects and identify redirect chains for better SEO performance.
Domain Age Checker
Check the age and registration details of any domain using WHOIS data.
Meta Tag Analyzer
Analyze meta tags on any webpage for SEO optimization and best practices.
Meta Title & Description Length Checker
Check title and meta description lengths with a live SERP-style preview.
Meta Tag & On-Page HTML Checker
Paste HTML to extract title, meta description, canonical, robots, H1–H6, and image alt issues with prioritized fixes.
On-Page SEO Checker
Analyze pasted HTML for on-page SEO essentials: titles, descriptions, headings, canonical, and alt text.
Keyword Research
Density, SERP previews, and phrase analysis from your own text—no proprietary volume database.
Technical SEO
Robots, sitemaps, canonicals, redirects, and crawl-oriented configuration helpers.
Robots.txt Generator
Generate robots.txt files to control how search engine crawlers access your website.
Canonical URL Generator
Generate canonical URL tags to prevent duplicate content issues and consolidate link equity.
Meta Robots Tag Generator
Generate index/follow meta robots tags for precise crawl directives.
htaccess Redirect Generator
Create Apache 301/302 RewriteRule snippets for SEO-safe redirects.
Hreflang Tag Generator
Generate hreflang alternate link tags for international SEO.
Content SEO
Readability, headings, alt text, and writing-pattern reviews for people-first content.
H1 Tag Checker
Check H1 heading tags on any webpage for proper SEO heading structure.
Heading Structure Checker
Analyze heading hierarchy (H1-H6) for proper document structure and SEO optimization.
Image Alt Text Checker
Find images missing alt attributes in pasted HTML for accessibility and SEO.
Offline Semantic Content Generator
Generate a semantic SEO outline, entity list, FAQs, and draft sections from a topic—offline in your browser with no API.
Writing Pattern Analyzer
Review sentence variation and vocabulary signals for readability. Does not claim AI detection certainty.
Writing Pattern Review (AI Signals)
Heuristic writing-pattern review only—not a definitive AI detector. Explains variation and repetition signals honestly.
Calculators
Quick calculators for everyday planning tasks without leaving the browser.
Generators
Generators for passwords, UUIDs, lorem text, and structured markup snippets.
UUID Generator
Generate universally unique identifiers (UUIDs) for databases and applications.
Password Generator
Generate strong, secure passwords with customizable length and character types.
Hash Generator
Generate various hash values including MD5, SHA-1, SHA-256, and SHA-512.
MD5 Hash Generator
Generate MD5 hash values for any text input.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings back to text.
URL Encoder/Decoder
Encode text for URLs or decode URL-encoded strings.
Lorem Ipsum Generator
Generate placeholder text for designs and mockups.
Utilities
UTM builders, slug cleaners, and everyday SEO utilities.
Link Building
Extractors and helpers that support outreach workflows without fabricating backlink indexes.
Domain Tools
URL and domain utilities using browser-side parsing and public link builders.
Schema Tools
JSON-LD builders and validators for structured data workflows.
What are free SEO tools?
Free SEO tools are browser utilities that check or generate title tags, meta descriptions, headings, keyword usage, robots rules, structured data, and UTM links without installing software—most AuthorityLinks tools run privately on your device.
They prioritize privacy (client-side processing), clear outputs for answer engines, and internal links to services when you need outreach or monthly SEO.
Privacy-first
Most analysis stays in your browser—ideal for unpublished drafts and client content.
Indexation-ready pages
Each tool URL has unique titles, FAQs, and schema so Google can discover and rank them.
AEO & GEO aligned
Definitions, how-to steps, and FAQ schema support classic SERPs and AI answer surfaces.
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