Free SEO Tools Portal
Fast
Free
No sign-ups
320+ tools
Free SEO Tools to Boost Your Rankings
Satisfy your craving for traffic. Fix SEO issues, optimize content, and grow organic traffic—fast—with 320+ free content, technical, and on-page SEO tools.
Browse by category
Find tools organized by type.
Backlinks & Links Tools
23 tools available
→
CSS & Design Generators Tools
13 tools available
→
Content & Writing Tools
38 tools available
→
Developer & Utilities Tools
91 tools available
→
Domain, DNS & IP Tools
38 tools available
→
SEO & On-Page Tools
59 tools available
→
Security & Privacy Tools
25 tools available
→
Website & Performance Tools
34 tools available
→
Most popular tools
Trending now — sorted by views. Tools update automatically based on usage.
Robots.txt Exposure Checker
Find sensitive paths exposed in robots.txt like admin panels, backups, and databases.
Cookie Security Checker
Analyze cookies for Secure, HttpOnly, and SameSite flags. GDPR compliance checker.
Upside Down Text Generator
Flip text upside down using Unicode. Perfect for social media.
Word & Character Counter
Count words, characters, sentences, and paragraphs in text.
Topical Authority Map Generator
Generate complete topical authority maps with pillar pages, clusters, and supporting articles. Build content strategy for SEO.
PageSpeed Insights Checker
Check Google PageSpeed Insights score.
Content Freshness Checker
Detect publish/updated dates and estimate how fresh a page is for SEO.
Question Sentence Extractor
Extract all question sentences from content for FAQ creation. Smart detection finds ? and question keywords. Multiple output formats.
Trailing Slash Consistency Checker
Check whether URLs behave consistently with or without trailing slashes and detect SEO risks.
Paragraph Length Analyzer
Analyze paragraph lengths and flag overly long paragraphs.
View Source Code
View HTML source code of any webpage.
UTM Builder
Build UTM tracking URLs easily.
YouTube Title Score Checker
Analyze and score YouTube video titles. Get optimization tips based on proven best practices. 85-95% accuracy without API.
Duplicate Title Detector
Detect duplicate title tags across multiple URLs.
HTML Payload Analyzer
Check raw HTML size and compression to improve speed and SEO.
Link Attribute Consistency Checker
Detect inconsistent rel attributes like nofollow, sponsored, and ugc on page links.
Text Similarity Checker
Compare two texts and calculate similarity percentage to detect duplication or overlap.
Text to Speech
Convert text to speech using Web Speech API. Multiple voices, speed/pitch control, free & private. Perfect for accessibility and content.
XML-RPC Exposure Checker
Check if WordPress XML-RPC is exposed and assess attack surface risks.
Keyword Stuffing Risk Checker
Check content for keyword stuffing before publishing. Accurate density calculation and pattern detection to avoid Google penalties.
What is My Browser
Detect your browser information.
Hashtag Generator
Generate trending hashtags for social media. 12 categories, keyword generation, popularity indicators. Copy all at once. Perfect for Instagram, Twitter, TikTok.
IP Country Guess
Find geographic location, country, city, ISP, and network info for any IP address.
Text to HTML Ratio Calculator
Calculate text to code ratio. Get grade and optimization tips.
Whois Lookup
Get WHOIS information for domain.
Google Index Checker
Check if page is indexed by Google.
Internal Keyword Usage Checker
Analyze how a keyword is used across titles, headings, content, and internal links.
Text to Clean HTML Paragraphs
Convert plain text into clean <p> paragraphs and HTML-friendly output.
WWW Redirect Checker
Check if domain redirects www to non-www.
Duplicate Parameter URL Finder
Find duplicate URLs caused by reordered or repeated query parameters.
Paragraph Rewriter Lite
Shuffle sentence order and clean up spacing—no AI, no synonyms.
URL SEO Score Checker
Analyze URL structure and get SEO score from 0-100. Check HTTPS, length, keywords, and more with actionable recommendations.
Hreflang Tag Generator
Generate hreflang tags for international SEO and multilingual sites.
Readability Score Calculator
Calculate Flesch Reading Ease score for content.
Styled Text Generator
Generate bold, italic, strikethrough, underline text. 6 variations.
Content Depth Estimator
Analyze how deep, comprehensive, and well-structured a page is for SEO and user intent.
FAQ Schema Builder
Convert Q/A text into FAQPage JSON-LD schema and HTML.
Hyphen & Number Domain Checker
Evaluate the trust impact of hyphens and numbers in a domain name and get improvement tips.
Passive Voice Detector
Detect passive voice usage in your content to improve clarity, readability, and SEO performance.
CTR Title Optimizer
Optimize title tags for higher click-through rates. Analyzes power words, numbers, emotional triggers based on proven research.
Heading Structure Analyzer
Analyze H1-H6 heading structure.
Plagiarism Checker
Check content for plagiarism and duplicate text.
TTFB Estimator
Estimate server Time To First Byte (TTFB) and analyze backend response speed.
Emoji Density Analyzer
Analyze emoji usage density in text to avoid overuse and improve readability and SEO balance.
Internal Page Ratio Checker
Analyze the ratio of internal pages, discover crawl depth, and detect structural SEO issues.
Noindex Conflict Detector
Detect conflicts between noindex directives, HTTP headers, and canonical signals.
Page Authority Checker
Check the Page Authority (PA) of any URL free — a 0-100 score estimating how well a single page can rank, with domain authority shown for context.
SEO Content Brief Generator
Generate professional SEO content briefs with structure, keywords, and writer guidelines. Perfect for content teams.
Canonical Pagination Conflict Checker
Detect SEO conflicts between canonical tags and paginated pages.
Domain Language Detection Tool
Detect the dominant language of a website by analyzing visible page content and language signals.
Duplicate Paragraph Finder
Find repeated or near-duplicate paragraphs within a page that can harm content quality and SEO.
IP Abuse Signal Checker
Detect blacklist hints without querying lists - heuristic abuse detection.
Lorem Ipsum Generator
Generate placeholder text for designs and mockups.
Sentence Length Analyzer
Analyze sentence lengths (words/chars), spot long sentences, and improve readability.
URL Slug Generator
Generate SEO-friendly URL slugs.
Website Screenshot Generator
Generate screenshots of websites.
Keyword Density Checker
Check keyword frequency and density in your content.
Mixed Content Checker
Detect insecure HTTP resources loaded on HTTPS pages that break browser security.
SPF / DKIM / DMARC Checker
Check SPF, DKIM, and DMARC records using DNS TXT lookup.
Social Media Post Templates
Create professional social media graphics. 6 templates, 4 platform sizes, full customization. Instagram, Facebook, Twitter. Download ready-to-post images.
Exposed Admin Path Detector
Detect common admin URLs that may expose login panels or sensitive areas.
IP Header Leak Checker
Scan HTTP response headers to detect potential IP exposure or origin leaks.
Keyword Mapping Tool
Map keywords to URLs, detect cannibalization, assign primary/secondary keywords, and group by search intent. Export to CSV.
Reading Time Calculator
Estimate reading time from word count and reading speed.
Article Rewriter
Rewrite articles and content for uniqueness.
Directory Listing Checker
Detect if directories expose file listings revealing sensitive documents and structure.
Domain Authority Checker
Check the Domain Authority (DA) of any website free — get a 0-100 authority score to benchmark competitors and track your own ranking strength.
IP CDN Detection Tool
Detect CDN usage using DNS, IP ranges, and HTTP header heuristics.
Intro Paragraph Optimizer
Analyze and optimize the first paragraph of your content for engagement, clarity, and SEO impact.
URL Parameter Analyzer
Analyze URL parameters to detect duplicate content and SEO risks.
CSS File Weight Checker
Analyze CSS load size by checking file weight, compression, and estimated load impact.
Google SERP Preview Tool
Preview how your page appears in Google search results. Test meta titles and descriptions with desktop/mobile views.
Headline Capitalization Checker
Check and convert headlines to title case with common rules.
Remove Duplicate Sentences
Remove repeated sentences while keeping original order.
Robots.txt Security Analyzer
Analyze robots.txt to detect exposed admin, login, and sensitive paths.
Robots.txt Tester
Test if URLs are allowed or blocked by robots.txt. Check user-agent rules, wildcards, and crawl permissions instantly.
SSL Certificate Checker
Check SSL certificate validity, issuer, expiry date, and SAN coverage.
Domain Brandability Score
Score domain memorability heuristics for brand-friendly naming.
Image Alt Text Generator
Generate SEO-optimized alt text for images. 6 suggestions with copy/download.
Link Placement Analyzer
Analyze links by placement: header vs body vs footer.
Moz Rank Checker
Check the MozRank link authority of any domain free — a simple 0-10 score showing how strong a website's backlink profile is.
URL Rewriting Tool
Generate URL rewrite rules for .htaccess.
Keyword CPC Calculator
Calculate estimated cost per click for keywords.
Markdown to HTML Converter
Convert basic Markdown into clean HTML.
Meta Description Checker
Check meta description length and quality.
OpenGraph Completeness Checker
Validate Open Graph meta tags and ensure complete social sharing previews.
Readability Heatmap Tool
Visualize text readability and sentence complexity using a color-coded heatmap.
Reverse IP Domain Grouper
Find and group domains hosted on the same IP address using DNS-based techniques.
Reverse IP Lookup
Find domain from IP address.
Schema Markup Generator
Generate JSON-LD schema markup.
Search Engine Spider Simulator
See page as search engine sees it.
XML Sitemap Generator
Create XML sitemap for your website.
Above-the-Fold Content Checker
Detect above-the-fold content delay issues and render-blocking problems.
Directory Indexing Checker
Detect open directories and exposed file listings on websites.
Domain Typo Generator
Generate typo variations for brand protection and lookalike domain monitoring.
Link Velocity Estimator
Compare internal link growth between two versions of a page.
Unicode Cleaner Tool
Remove invisible Unicode characters, zero-width spaces, BOMs, and normalize text safely.
YouTube Thumbnail Tester
Preview thumbnails in real YouTube contexts. Test desktop search, sidebar, mobile, and grid layouts. Check dimensions and file size instantly.
Bold Text Generator
Convert text to bold Unicode. Stand out on social media.
Keyword Highlight Tool
Highlight keywords inside text to analyze SEO usage, placement, and density.
Meta Tags Generator
Generate meta tags for HTML pages.
Sitemap vs Robots Conflict Checker
Detect URLs listed in XML sitemaps that are blocked by robots.txt directives.
Unicode Normalizer
Normalize Unicode and remove problematic hidden characters.
YouTube Thumbnail Downloader
Download YouTube video thumbnails in various sizes.
Broken Image Link Checker
Detect broken image URLs on a page.
Broken Resource Analyzer
Scan a webpage to detect broken CSS, JS, image, and other linked resources.
Domain Length Analyzer
Analyze SEO friendliness based on domain length, structure, hyphens, numbers, and readability signals.
Domain Name Ideas
Generate domain name ideas based on keywords (suggestions only).
Fancy Font Generator
Generate 20+ stylish fancy fonts for social media, WhatsApp, Instagram - copy & paste instantly.
HTTP Methods Checker
Test which HTTP methods are allowed - find PUT, DELETE, TRACE vulnerabilities.
LSI Keyword Extractor
Extract semantically related (LSI) keywords from any webpage to improve topical relevance and SEO.
Meta Title Length Checker
Check meta title length, pixel width, and SEO quality. Real-time analysis with Google SERP preview.
Online Notepad
Simple notepad with auto-save. Write notes with real-time word count.
AI SEO Meta Title Generator
Generate optimized meta titles with AI.
Bio Link Generator
Create link in bio pages like Linktree. Unlimited links, custom themes, social media icons. Export HTML. No monthly fees. Own your links!
Bulk GEO IP Locator
Find geographic location of multiple IPs.
Clickjacking Protection Checker
Check if website is protected against clickjacking with X-Frame-Options and CSP.
Domain Age Checker
Check how old a domain is.
JS Execution Order Analyzer
Detect render-blocking JavaScript and analyze script execution order.
Keyword Position Checker
Check keyword ranking position in search results.
Schema Presence Detector
Detect which schema.org structured data types are used on a page.
Small Text Generator
Convert normal text into stylish small Unicode text instantly.
AI Keyword Cluster Ideas
Generate keyword cluster ideas with AI.
Indexability Signal Checker
Check meta robots and HTTP header signals that affect page indexability.
Link Depth Analyzer
Analyze internal links and measure click depth from the homepage.
Open All URLs
Open multiple URLs at once in browser tabs.
Password Strength Checker
Test password strength with real-time feedback. 100% private - runs in your browser.
QR Code Generator
Generate QR codes from text or URL.
Sort Lines Tool
Sort lines A→Z or Z→A with optional uniqueness.
Text Diff Checker
Compare two texts and highlight added/removed lines.
Website Structure Visualizer
Visualize internal link structure and page depth of a website.
Canonical Conflict Checker
Compare page URL with canonical tag to detect SEO conflicts.
Content Cannibalization Checker
Detect keyword overlap and SEO cannibalization between multiple pages on the same site.
Domain Keyword Extractor
Extract top keywords and phrases from a domain homepage for quick SEO insights.
Emoji Usage Analyzer (SEO Safe)
Analyze emoji usage in titles and check whether it is SEO-safe and user-friendly.
Find & Replace Tool
Find and replace text with useful options.
Image Placeholder Generator
Create custom placeholder images for web development. Choose size, colors, and format. Download as PNG, JPEG, or WebP.
Online Text Editor
Write, format, and export text with auto-save.
Reverse Text Generator
Reverse text in 7 ways: flip characters, words, upside down, mirror, lines, sentences.
Security Headers Checker
Check if website implements essential security headers like CSP, HSTS, X-Frame-Options.
Alt Attribute Quality Checker
Analyze the quality and descriptiveness of image alt attributes for SEO and accessibility.
CIDR Calculator
Calculate subnet mask, network, broadcast, and host range for IPv4 CIDR blocks.
CSV ⇄ JSON Converter
Convert CSV to JSON and JSON to CSV.
Content Gap Checker
Find content opportunities by analyzing gaps in your coverage. Get prioritized recommendations and build a strategic content calendar.
Email Harvest Protection Checker
Detect exposed email addresses on web pages and reduce spam risks.
Internal vs External Links Counter
Count internal and external links on a page.
Meta Tags Analyzer
Extract and analyze meta tags from web pages.
Open Port Checker
Scan common ports to find security risks like exposed databases, SSH, and RDP.
Site Depth Distribution Tool
Analyze how many clicks it takes to reach pages from the homepage and identify deep or buried content.
AI SEO Meta Description Generator
Create compelling meta descriptions with AI.
Canonical Link Checker
Check canonical URL implementation.
HTML Tag Distribution Analyzer
Analyze a webpage and count HTML tags (headings, links, images, lists, tables) for quick structure insights.
Image Link Analyzer
Detect images used as links and analyze alt text, destination URLs, and SEO impact.
Blacklist Lookup
Check if domain is blacklisted.
Image Compressor
Compress JPG, PNG, WebP images by up to 90% while maintaining quality. Client-side, instant, and private.
Mobile-Friendliness Heuristic Checker
Analyze mobile usability signals like viewport, responsive CSS, and layout flexibility.
Privacy Policy Generator
Generate privacy policy for your website.
Terms & Conditions Generator
Create terms and conditions for your website.
Word Combiner
Merge words in 12 methods: camelCase, snake_case, kebab-case, and more.
DOM Size Analyzer
Analyze DOM size and detect excessive HTML elements that can slow down your website.
HTML Validation Heuristic Tool
Detect invalid HTML nesting patterns and common markup mistakes.
Homepage SEO Signal Scanner
Scan and analyze critical SEO signals on a website homepage.
Markdown Editor + Preview
Write Markdown with live preview, copy, and export.
Meta Tag Length Optimizer
Optimize meta title and description length with pixel-based SERP preview.
Robots.txt Generator
Generate robots.txt file for search engines.
Text Case Normalizer
Normalize text into lowercase, UPPERCASE, Sentence case, Title Case, or toggle case instantly.
What is My IP
Show your current IP address.
Word Frequency Analyzer
Analyze word frequency in text. Interactive charts, stop words filter, export CSV. Perfect for SEO, content analysis, and research.
Content Update Suggestion Tool
Analyze pages and get actionable suggestions on what to update, improve, or refresh for better SEO and user value.
Footer Link Analyzer
Analyze SEO risk of footer links.
JSON Formatter + Validator
Validate and format JSON (pretty or minified).
Mobile Friendly Test
Test if website is mobile-friendly.
Nofollow / Sponsored / UGC Link Checker
Scan page links for rel attributes.
Page Speed Checker
Measure website loading speed.
Text Summarizer
Summarize long text automatically. Smart algorithm, adjustable length (25-75%), paragraph or bullet points. Perfect for articles and reports.
Title Tag Analyzer
Analyze title tag length and SEO optimization.
Code to Text Ratio Checker
Calculate code vs text ratio on web pages.
Image Format Converter
Convert images between JPG, PNG, and WebP formats. Batch convert multiple images with adjustable quality. Client-side and private.
Keywords Suggestion Tool
Get keyword suggestions for SEO.
Page Size Checker
Check total page weight and size.
Redirect Chain Checker
Check URL redirects and redirect chains.
Schema Validator
Validate JSON-LD schema markup. Check syntax, required fields, data types, and Google rich results eligibility instantly.
Suspicious Domain Checker
Check if domain is suspicious.
Backlink Checker
Check any website's backlinks free — see its Domain Authority, referring domains, and estimated total backlinks to size up any link profile in seconds.
Broken External JS Link Checker
Detect broken or unreachable external JavaScript files included on a web page.
H-Tag Hierarchy Validator
Validate heading structure and detect SEO hierarchy issues.
IFSC Code to Bank Details
Get bank details from IFSC code.
IP Response Time Analyzer
Measure IP and server response latency without using any external APIs.
IP Type Checker
Check if an IP is public, private, reserved, loopback, or link-local.
Links Count Checker
Count total links on a webpage.
Orphan Page Finder
Find pages that have no internal links pointing to them.
Preload / Prefetch Checker
Detect missing preload, prefetch, and preconnect hints to improve page loading performance.
QR Code Decoder
Decode QR codes and read contents.
UPI QR Code Generator
Generate UPI payment QR codes.
Anchor Text Analyzer
Analyze inbound and outbound anchor texts on a page.
IP PTR Record Checker
Reverse DNS validation - check PTR records for email deliverability.
IP Port Exposure Heuristic
Detect risky exposed service hints like SSH, FTP, databases, and admin ports using safe heuristics.
IPv4 / IPv6 Validator
Validate IPv4 and IPv6 addresses.
Pagination SEO Checker
Check rel="next" and rel="prev" pagination tags and identify SEO pagination issues.
Unused Asset Finder
Detect CSS, JavaScript, and image assets that may not be required on a webpage.
Accessibility Quick Audit
Quickly detect common accessibility issues like missing alt text, labels, and heading problems.
Case Converter (camelCase, snake_case, kebab-case)
Convert text and code between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case. Free, in your browser.
Character Visual Counter
Visually count characters, spaces, emojis, symbols, and line breaks in real time.
Domain Redirect Chain Checker
Follow redirect hops and display status codes and final destination.
Email Privacy Checker
Find exposed email addresses in HTML.
Gzip Compression Test
Test if website uses Gzip compression.
HTTP Status Code Mapper
Map HTTP status codes across redirects and final URLs to identify SEO and technical issues.
HTTPS Redirect Enforcer Checker
Detect weak HTTPS enforcement and improper HTTP to HTTPS redirects.
IP ASN Guess Tool
Estimate the ASN (Autonomous System Number) of an IP using routing hints.
Screen Resolution Simulator
Simulate different screen resolutions.
Subheading Quality Checker
Analyze H2/H3 headings for keyword usage, length, power words, and engagement. Get quality scores and improvement suggestions.
Bank to IFSC Code
Find IFSC code from bank and branch.
Font Load Analyzer
Detect render-blocking fonts and font loading issues affecting page speed.
HTML Entity Encoder
Encode and decode HTML entities.
Image Color Extractor
Extract color palettes from images. Get HEX/RGB codes, percentages, and export as CSS or JSON. Perfect for designers.
Image Resizer
Resize images by width, height, or percentage. Maintain aspect ratio or set custom dimensions. Client-side and private.
MD5 Hash Generator
Generate MD5, SHA1, and SHA256 hashes.
SEO Risk Score Generator
Generate an overall SEO risk score by analyzing common technical and on-page SEO issues.
Color Picker Tool
Pick colors and get HEX/RGB values.
Domain to IP
Convert domain name to IP address.
EXIF Data Remover
Remove EXIF metadata from images.
Htaccess Redirect Generator
Generate .htaccess redirect rules.
Inline CSS Detector
Detect inline CSS usage and help optimize styles for speed and maintainability.
Open Graph Image Generator
Create perfect OG images for social sharing. 6 templates, custom text, logo upload, 1200×630px. Perfect for Facebook, Twitter, LinkedIn.
Redirecting Link Detector
Find URLs that redirect unnecessarily and reveal redirect chains.
Remove Duplicate Lines
Remove duplicate lines and keep the first/last occurrence.
Stop-Word Density Analyzer
Analyze stop-word frequency and density to improve content clarity and SEO.
URL Encoder/Decoder
Encode and decode URLs.
YouTube Keywords Extractor
Extract keywords from YouTube videos.
Bulk Image Resizer
Resize multiple images at once. Upload unlimited images, apply same settings to all, download as ZIP. Batch processing for efficiency.
Class C IP Checker
Check if domains share same Class C IP.
Cookie Flag Checker
Check Secure and HttpOnly flags on cookies to identify session security risks.
DNS Records Finder
Find all DNS records for domain.
Domain Redirect Mapper
Show redirect chains for a root domain (http/https, www/non-www) to diagnose SEO and performance issues.
EXIF Data Viewer
View EXIF metadata from images.
Image Cropper
Crop images with visual editor. Preset ratios (1:1, 16:9, 4:3, 9:16) or free crop. Drag and resize crop box. Client-side and private.
Password Generator
Generate strong random passwords. Custom length, bulk generation, strength indicator. 100% secure and private.
Breadcrumb Schema Generator
Generate JSON-LD breadcrumb schema markup for rich results.
DNS Record Viewer
View A, AAAA, CNAME, MX, TXT, and NS DNS records.
Server Status Checker
Check if server is up or down.
Sitemap Validator
Validate XML sitemaps. Check syntax, URL format, protocol compliance, and sitemap.org standards instantly.
Website Ping Tool
Ping website to search engines.
Broken Links Finder
Find broken links on your website.
Domain History Signal Checker
Detect domain age and history signals from the site itself (no APIs).
Form Security Attribute Checker
Analyze HTML forms for CSRF-related security attributes and risks.
Homepage Content Balance Checker
Analyze homepage content balance: text, links, images, headings, and scripts.
RGB to Hex
Convert RGB color values to HEX.
Reverse DNS Lookup (PTR)
Find PTR hostname for an IPv4 or IPv6 address.
Security Header Strength Checker
Grade security headers with detailed scoring, letter grades (A+ to F), and actionable recommendations.
IP Range to CIDR Converter
Convert an IPv4 start/end range into the smallest set of CIDR blocks.
Lazy Load Image Detector
Check whether images on a page use lazy-loading for better performance.
Whitespace Cleaner
Normalize line breaks, remove trailing spaces, and clean whitespace.
Anchor Diversity Checker
Analyze anchor text distribution and detect over-optimized or risky anchor patterns.
IP Version Detector
Detect whether a domain uses IPv4, IPv6, or dual-stack networking.
Emojis Remover
Remove emojis from text.
Link Analyzer
Analyze all links on a webpage.
Google Malware Checker
Check if site has malware.
Google Cache Checker
Check Google cached version of page.
Base64 Encoder/Decoder
Encode and decode Base64 strings.
Multi-Domain Canonical Checker
Detect cross-domain canonical misuse across multiple URLs and domains.
Reverse Text
Reverse any text string.
Link Price Calculator
Calculate estimated link price for domain.
ASCII Art Generator
Convert text to ASCII art. 20+ fonts including Banner, Block, Graffiti. Perfect for social media, code headers, signatures.
HEX to RGB
Convert HEX color codes to RGB.
Backlink Maker
Create backlinks to your website.
Domain Hosting Checker
Find out where domain is hosted.
Favicon Generator
Generate favicons in all sizes from your image. Get PNG files and HTML code.
Bulk Delete Tweets
Delete all your tweets, replies & X posts in bulk — 100% free, no password, no API fees. Free Chrome extension.
Hreflang Validator
Validate hreflang tags on a live page: language/region codes, x-default, self-reference, absolute URLs, and return-tag reciprocity across alternates.
AI Crawler Access Checker
Check whether AI bots (GPTBot, ClaudeBot, Google-Extended, PerplexityBot, CCBot and more) are allowed or blocked by your robots.txt. Get ready-to-paste rules.
Regex Tester & Builder
Test and debug regular expressions live with match highlighting, capture groups, flags, and a handy cheat sheet. 100% in-browser.
llms.txt Generator
Create an llms.txt file so AI assistants like ChatGPT, Claude, and Perplexity can understand and cite your site. Follows the llmstxt.org standard.
Sitemap vs Robots Coverage Checker
Deep-check how your XML sitemap and robots.txt work together: sitemap declaration, reachability, index expansion, URL counts, and how many URLs are blocked.
Rich Results Eligibility Tester
Fetch a URL (or paste markup), detect JSON-LD structured data, and see which Google rich results it qualifies for — with missing required and recommended fields.
Core Web Vitals Checker (CrUX)
Look up real-user Core Web Vitals field data from the Chrome UX Report — LCP, INP, CLS, FCP and TTFB at the 75th percentile, with pass/fail assessment.
Keyword Difficulty Checker
Estimate how hard a keyword is to rank for using a transparent heuristic. Optionally add Google results and allintitle counts for a sharper score.
UUID / GUID Generator
Generate random UUID v4, time-ordered UUID v7, or the nil UUID in bulk. Copy or download. Uppercase and no-hyphen options.
CSP Header Generator
Build a Content-Security-Policy header visually. Pick directives and sources, then copy the header or meta tag. Reduce XSS risk.
WCAG Color Contrast Checker
Check text/background color contrast against WCAG 2.1 AA and AAA for normal and large text, with a live preview.
Cron Expression Generator
Build and parse cron expressions with a plain-English description and the next scheduled run times. No signup.
JSON ↔ YAML Converter
Convert JSON to YAML and YAML to JSON instantly. Validate, pretty-print, and copy the result. Runs in your browser.
JWT Decoder
Decode JSON Web Tokens to inspect the header and payload, with human-readable expiry, and optional HS256 signature verification.
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and any base 2–36. Big-integer safe.
SRI Hash Generator
Generate Subresource Integrity (SRI) hashes (SHA-256/384/512) for scripts and stylesheets. Paste content or upload a file.
Unix Timestamp Converter
Convert Unix epoch timestamps to human dates and back, in UTC or local time. Supports seconds and milliseconds.
Bulk Domain Authority Checker
Check the Domain Authority of up to 100 websites at once — get DA, referring domains, and global rank in a sortable table with CSV export. Free.
CSS Box-Shadow Generator
Design CSS box-shadows visually with live preview — control offset, blur, spread, opacity, color, and inset, then copy production-ready CSS. Free.
CSS Loader & Spinner Generator
Create pure-CSS loading spinners and animations — spinner, dual-ring, pulse, and dots styles with adjustable size, speed, and color. Copy the CSS. Free.
JavaScript Minifier & Beautifier
Safely minify JavaScript (comments + whitespace) or beautify messy code — preserves strings, regex, and template literals. Runs in your browser. Free.
CSS Flexbox Generator
Build flexbox layouts visually — set direction, justify, align, wrap, and gap with a live preview, then copy ready-to-use flexbox CSS. Free, no sign-up.
CSS Gradient Generator
Create CSS gradients visually and copy the code in one click — linear, radial, and conic gradients with unlimited color stops and a live preview. Free.
Htpasswd Generator
Generate .htpasswd entries to password-protect a folder with Apache or nginx — bcrypt (recommended) or SHA-1, ready to paste. Free, no sign-up.
CSS Text-Shadow Generator
Add shadows and glow effects to text visually — adjust offset, blur, opacity, and color with a live preview and presets, then copy the text-shadow CSS. Free.
HTML Minifier & Beautifier
Minify HTML to shrink file size, or beautify messy HTML into clean, readable code — with live byte savings. Runs in your browser, nothing uploaded.
JWT Generator & Encoder
Create and sign JSON Web Tokens (JWT) in your browser — edit header and payload, pick HS256/384/512, and get a signed token. Your secret never leaves your device. Free.
SHA-256 Hash Generator
Generate a SHA-256 hash from any text instantly in your browser — also supports SHA-1, SHA-384, and SHA-512. Private, fast, and free with no sign-up.
ULID Generator
Generate ULIDs — time-sortable unique IDs — in bulk, with monotonic mode and a timestamp decoder. A modern, sortable alternative to UUIDs. Free.
CSS Border-Radius Generator
Round element corners visually and copy the CSS — control each corner, make circles and pill shapes, or generate organic blobs with a live preview. Free.
Markdown Table Generator
Build Markdown tables visually — fill a grid, set column alignment, or paste CSV/Excel data to import — then copy clean Markdown for GitHub and docs. Free.
CSS Minifier & Beautifier
Minify CSS to shrink file size, or beautify minified/messy CSS into clean code — with live byte savings. Runs in your browser, nothing uploaded. Free.
Glassmorphism CSS Generator
Create the frosted-glass (glassmorphism) effect visually — adjust blur, transparency, tint, and border over a live preview, then copy the backdrop-filter CSS. Free.
Text to Binary & Hex Converter
Convert text to binary, hexadecimal, or decimal and back — UTF-8 aware, bidirectional, with one-click copy. Free and runs in your browser.
CSS Grid Generator
Create CSS Grid layouts visually — set columns, rows, gaps, and responsive sizing with a live preview, then copy ready-to-use grid CSS. Free.
HMAC Generator
Generate an HMAC (SHA-256, SHA-1, SHA-384, SHA-512) from a message and secret key, in hex or Base64 — for API signing and webhook verification. Runs in your browser. Free.
JSON Escape / Unescape
Escape text into a safe JSON string, or unescape a JSON string back to plain text — quotes, tabs, and newlines handled both ways. Runs in your browser. Free.
JSON to TypeScript Converter
Turn JSON into TypeScript interfaces instantly — plus Go structs and PHP classes — with nested objects handled automatically. Free, browser-based.
Roman Numeral Converter
Convert numbers to Roman numerals and back, both ways, for 1–3999 — with validation and a quick symbol reference. Free, runs in your browser.
Color Converter (HEX, RGB, HSL)
Convert colors between HEX, RGB, and HSL instantly — type any format (including HSL and RGB), with a live swatch and one-click copy. Free, in your browser.
Cubic-Bezier Easing Generator
Design custom CSS easing curves visually — drag the curve, preview the timing on a moving element, and copy the cubic-bezier() value for any transition. Free.
SQL Formatter & Beautifier
Format and beautify messy SQL queries, or minify them to one line — choose indent and keyword casing, then copy clean SQL. Runs in your browser, free.
URL Parser & Query String Builder
Break any URL into protocol, host, port, path, query, and fragment — then edit, add, or remove query parameters with a live, correctly-encoded rebuild. Free.
Chmod Permissions Calculator
Calculate Linux file permissions — tick read/write/execute to get the octal chmod number, symbolic notation, and a ready-to-run chmod command. Free.
Image to Base64 Encoder
Convert an image (PNG, JPG, GIF, WebP, SVG) to a Base64 data URI — drag and drop, preview, and copy as a data URI, CSS background, or HTML img. Encoded in your browser. Free.
PX to REM Converter
Convert between px, rem, and em instantly with a custom root font size — two-way, with an em option and a handy reference table. Free, runs in your browser.
.gitignore Generator
Build a .gitignore file in seconds — pick your languages, frameworks, editors, and OS (Node, Python, PHP, macOS, VS Code and more) and copy or download it. Free.
Bcrypt Generator & Verifier
Generate secure bcrypt password hashes with a chosen cost factor, and verify a password against an existing hash. Free, using native bcrypt.
CSS Gradient Text Generator
Create gradient text with CSS visually — pick colors and angle, preview live, and copy the background-clip code for eye-catching headings. Free, image-free.
CSS Filter Generator
Experiment with CSS filters visually — blur, brightness, contrast, saturate, grayscale, sepia, and hue-rotate with a live preview, then copy the filter CSS. Free.
Neumorphism CSS Generator
Create soft-UI neumorphism effects visually — adjust color, distance, blur, and shape (flat, concave, convex), then copy the box-shadow CSS. Free.
Text Repeater
Repeat any text N times with your choice of separator, optional line numbering, and live counts — then copy or download. Free, in your browser.
CSS Animation & Keyframes Generator
Create CSS keyframe animations visually — fade, slide, zoom, bounce, spin, pulse, and shake, with duration, timing, and iterations, then copy the code. Free.
320+ Free SEO Tools to Audit, Optimize, and Rank Higher
SEOlust is a free, all-in-one SEO toolkit with 321 tools spanning content, on-page, technical, performance, and security SEO — plus a full set of developer and text utilities. There is no signup, no credit card, and no software to install. Many tools run entirely in your browser, and every tool page includes a focused how-to guide and FAQ so both you and search engines understand exactly what it does. Whether you are running a full technical audit, polishing a blog post, or shipping international pages, SEOlust replaces a stack of paid subscriptions with fast, single-purpose tools that do one job well.
Everything you need across 8 categories
- SEO & On-Page: meta title and description analyzers, SERP snippet previews, schema generators and validators, robots.txt and XML sitemap tools, an hreflang validator, and a rich results eligibility tester.
- Content & Writing: word and character counter, keyword density and stuffing checks, readability scoring, a keyword difficulty checker, content briefs, and topical authority maps.
- Backlinks & Links: a backlink checker, domain authority checker, anchor text and diversity analysis, and broken-link finders.
- Domain, DNS & IP: WHOIS, DNS records, domain age, SSL checks, reverse IP, and CIDR tools.
- Website & Performance: a real-user Core Web Vitals (CrUX) checker, PageSpeed Insights, TTFB, page-size and render analysis.
- Security & Privacy: security-header and SSL checks, a CSP header generator, SRI hash generator, and blacklist lookups.
- Developer & Utilities: a regex tester, JSON ↔ YAML converter, JWT decoder, UUID generator, and dozens of encoders, formatters, and case tools.
Built for modern, AI-era SEO
Search is shifting from ten blue links to AI answers and rich results, so SEOlust goes beyond the basics. Publish an llms.txt file so assistants like ChatGPT, Claude, and Perplexity understand your site, control which AI bots may crawl you with the AI crawler access checker, confirm your structured data qualifies for Google rich results, and monitor the real-user Core Web Vitals that feed Google's page-experience signal. These are the same checks premium platforms charge for — here they are free.
A simple end-to-end SEO workflow
A practical flow with SEOlust: draft and refine content with the readability and keyword tools, tighten your meta tags and URL slugs, generate and validate schema, then run technical checks — sitemap and robots coverage, redirects, indexability, and Core Web Vitals — before you publish. Re-run the relevant tools after each change to keep pages aligned with search intent and free of the avoidable issues that hold rankings back.
Why choose SEOlust
- 100% free, no sign-up: every one of the 321 tools is free with no account or trial.
- Private by design: most content and text tools run in your browser, so your data is not uploaded or stored.
- Fast and focused: each tool loads instantly and does one job well — no bloated dashboards.
- Genuinely helpful guides: every tool page has original instructions and FAQs, not thin filler.
Frequently asked questions
Is SEOlust really free?
Yes. All 321 tools are completely free to use with no account, no credit card, and no trial period.
What kinds of SEO tools does SEOlust offer?
SEOlust covers content, on-page, technical, and performance SEO, plus security, domain, IP, and link tools, and a large set of developer and text utilities — 321 tools across 8 categories.
Do I need to install anything or create an account?
No. SEOlust runs in any modern browser with nothing to install and no sign-up required.
Does SEOlust support AI and modern search?
Yes. You can generate an llms.txt file, check which AI crawlers your robots.txt allows, test Google rich-results eligibility, and view real-user Core Web Vitals — the checks that matter for AI-era and page-experience SEO.
Is my data private when I use the tools?
Most content and text tools process your input entirely in your browser and do not store it. Tools that analyze a live URL fetch only the public page at request time.
Can I use SEOlust on mobile?
Yes. The entire site is responsive and works on phones, tablets, and desktops.
Will these tools guarantee higher rankings?
No tool can guarantee rankings, but fixing the technical and content issues SEOlust surfaces removes the obstacles that commonly hold pages back, improving your chances over time.