200+ powerful SEO tools to analyze, fix, and improve your website's SEO performance. No sign up, no limits, just results.
Find the right tools for your SEO needs. Explore our 10 powerful categories.
Meta tags, headings, content analysis, SERP preview and more to optimize your pages.
Redirect generators, disavow tools, URL cleaners and migration helpers.
Filter, analyze and optimize your GSC data for better insights.
Generate valid JSON-LD schema for higher visibility in search results.
Find, organize and plan keywords to grow your organic traffic.
Hreflang, international SEO audits and multilingual helpers.
Analyze speed, CWV and frontend performance.
Optimize images for better SEO and faster loading.
Improve local visibility and optimize your Google Business Profile.
The most used tools to analyze, fix and boost your website's SEO performance.
We provide a complete collection of free, easy-to-use and highly accurate SEO tools to help website owners, marketers and SEO professionals improve their search engine rankings.
ToxicBacklink offers 200+ free SEO tools designed to help you analyze, fix, and improve your website's SEO. From on-page optimization and technical SEO audits to keyword research, backlink analysis, and schema markup, our tools cover everything you need to rank higher on Google and drive organic traffic. All tools are browser-based, fast, and completely free.
Whether you're a blogger, business owner, digital marketer, or SEO professional, you can save time and get accurate results with our easy-to-use tools. Explore our 10 categories above or check out our most popular tools to get started.
Find answers to common questions about our SEO tools.
Yes, all our SEO tools are 100% free forever. There are no subscriptions, hidden paywalls, or credit card requirements.
No, you can use every tool directly in your browser without creating an account or logging in.
Yes. All tools process your data locally in your web browser. Your keywords, URLs, and files are never stored or saved on our servers.
Our tools are built against official Google Search Central guidelines, W3C specifications, and modern industry standards for high accuracy.
Yes, you can use our tools for personal websites, client campaigns, agency audits, and commercial projects without restrictions.
We regularly release new tools and updates to reflect search engine algorithm changes, new schema types, and technical SEO best practices.
Start with our Keyword Research & Planning tools to explore keyword permutations, search intent, and long-tail query ideas.
Our tools run seamlessly across desktop and mobile browsers. Dedicated browser utilities and extensions are planned for upcoming releases.
Explore all tools and take your website's SEO to the next level. No sign up. No limits. Just powerful tools.
Explore our full library of 185+ client-side SEO utilities. Filter instantly by name, keyword, or category.
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Free browser-based tools to generate, validate, merge, clean and review your Google disavow files.
Disavow file generator: convert backlink lists into Google-compliant disavow.txt files with duplicate removal and domain normalization. Free, no account.
Disavow File Validator: Check Your File Against Google's Format. Free, 100% in-browser, no account.
Disavow File Merger: Combine Lists Into One File. Free, 100% in-browser, no account.
Compare Disavow Files and See What Changed. Free, 100% in-browser, no account.
Disavow File Cleaner: Fix, Sort and Remove Duplicates. Free, 100% in-browser, no account.
Disavow File to CSV Converter for Spreadsheets. Free, 100% in-browser, no account.
URL to Domain Extractor for Bulk Lists. Free, 100% in-browser, no account.
Subdomain to Root Domain Converter. Free, 100% in-browser, no account.
Backlink List Deduplicator: Remove Duplicate Links. Free, 100% in-browser, no account.
Backlink TLD Distribution Counter. Free, 100% in-browser, no account.
Anchor Text Distribution Analyzer for Search Console Data. Free, 100% in-browser, no account.
Search Console Links CSV Cleaner. Free, 100% in-browser, no account.
Toxic Backlink Checker: Audit your backlink profile, identify toxic links, and protect your Google rankings with automated penalty detection.
Validate, test, and generate robots.txt rules and XML sitemaps.
Robots.txt Generator: Create a Robots.txt File Online. Free, 100% in-browser, no account.
Robots.txt Tester: Check If a URL Is Allowed or Blocked. Free, 100% in-browser, no account.
XML Sitemap Generator From a List of URLs. Free, 100% in-browser, no account.
Generate and validate hreflang tags for multi-language and international SEO.
Hreflang Tag Generator for Multilingual Pages. Free, 100% in-browser, no account.
Hreflang Checker: Validate Your Hreflang Tags. Free, 100% in-browser, no account.
Free Hreflang XML sitemap generator: create search-compliant XML sitemaps with XHTML alternate hreflang tags for multi-language and multi-region websites.
Free Hreflang return tag validator: check reciprocal bidirectional hreflang links across language and region clusters with zero data storage.
Free hreflang language code validator: verify ISO 639-1 language and ISO 3166-1 alpha-2 region codes for international search targeting.
Free international URL structure planner: compare ccTLD, subdomain, and subdirectory website architectures with transparent technical SEO guidance.
Free multilingual SEO checklist generator: create customized international launch checklists for hreflang, localized content, and technical setup.
Free country targeting URL mapper: map language and regional URL equivalents into a clean multi-market matrix with CSV export and zero tracking.
Free hreflang conflict detector: identify duplicate language declarations, missing self-referencing tags, and conflicting URLs in browser memory.
Free multilingual meta tag comparator: compare localized title tags and meta descriptions side-by-side across international page variants.
Free x-default hreflang checker: validate international fallback URLs and language selector page configurations with zero server telemetry.
Free international canonical conflict checker: verify that canonical URLs align with hreflang alternate declarations to prevent de-indexing.
Audit, generate, and optimize meta tags, Open Graph, and Twitter Cards.
Canonical Tag Generator for Any URL. Free, 100% in-browser, no account.
Meta Tags Generator: Title, Description and Robots Tags. Free, 100% in-browser, no account.
Open Graph and Twitter Card Generator With Preview. Free, 100% in-browser, no account.
Organization Schema Generator: Create JSON-LD. Free, 100% in-browser, no account.
Breadcrumb Schema Generator: Create BreadcrumbList JSON-LD. Free, 100% in-browser, no account.
Build, validate, and convert redirects for Apache, Nginx, and WordPress.
.htaccess redirect generator: build 301 or 302 rules for pages, folders, domain moves, HTTPS and www, then copy the code. Free, no account.
Nginx redirect generator: turn old and new URLs into location rules or a map block with 301 or 302 codes and safe quoting. Free, no account.
Redirect map checker: paste old and new URLs and find loops, chains, conflicts and duplicates before you go live. Free, no account.
Redirect code generator: create PHP header, meta refresh or JavaScript redirect code for one URL, with a note on how Google reads each type. Free.
Bulk redirect formatter: clean old and new URL lists and convert them to CSV, JSON, Apache lines or nginx map lines. Free, no account.
WordPress Redirection plugin CSV builder: convert URL pairs into the exact CSV format needed by the Redirection plugin with 301 or 302 codes. Free, no account.
Normalize URLs, convert UTMs, analyze text, and clean data.
URL slug generator: turn titles into clean, lowercase, hyphenated slugs with accent handling and a bulk mode. Free, no account.
UTM link builder: add source, medium and campaign parameters to any URL, check naming consistency and build links in bulk. Free, no account.
URL encoder and decoder: percent-encode or decode text, URL parts and full URLs, with clear errors for broken sequences. Free.
URL parser: split any URL into protocol, host, port, path, query parameters and fragment, with decoded values. Free, no account.
Remove tracking parameters from URLs in bulk: choose names or prefixes to strip and see exactly what changed. Free, no account.
Title tag length checker: count characters and words and estimate width for one title or a whole list, and flag duplicates. Free.
Meta description length checker: count characters and words, preview width, and flag empty or duplicate descriptions. Free, no account.
Keyword density checker: count words and two or three word phrases in your text and see each term's share. Free, no account.
Inspect heading structure, anchor text, content length, and internal links.
Heading structure checker: paste HTML and see your H1 to H6 outline, skipped levels, empty and duplicate headings. Free, no account.
Image alt text checker: paste HTML and find images with missing, empty or repeated alt text and linked images with no text. Free, no account.
Internal link counter: paste HTML and count internal, external and non-crawlable links, with anchor text and rel values. Free, no account.
SERP snippet preview: see an approximate search result for your title, URL and description at a width you choose. Free, no account.
Readability score checker: Flesch, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau and ARI scores for English text, with formulas shown. Free.
Deduplicate, sort, filter, and extract items from lists and CSV data.
CSV deduplicator: remove duplicate rows by one or more columns, keep the first, last or most complete row, and download both files. Free.
CSV column extractor: choose columns by name or position, reorder or rename them, and export CSV, TSV, JSON or a plain list. Free.
Line sorter and deduplicator: sort lines, remove duplicates and empty lines, trim and count how often each line appears. Free.
List compare: paste two lists to see items only in A, only in B, in both or in either, with counts and downloads. Free, no account.
Regex tester: test JavaScript regular expressions with flags, groups, a replace preview and a time limit that stops slow patterns. Free.
Generate, validate, and test JSON-LD structured data and schema markup.
Article Schema Generator: JSON-LD for Blogs and News. Free, no account.
Product Schema Generator: JSON-LD for Product Pages. Free, no account.
Local Business Schema Generator: JSON-LD. Free.
Event Schema Generator: JSON-LD for Events. Free.
Recipe Schema Generator: JSON-LD for Recipes. Free, no account.
Video Schema Generator: VideoObject JSON-LD. Free.
Software App Schema Generator: JSON-LD. Free.
Profile Page Schema Generator: JSON-LD. Free.
JSON-LD Syntax Checker: Find Errors Fast. Free.
Schema Extractor: Find Structured Data in HTML. Free.
Free FAQ schema generator: create valid Schema.org FAQPage JSON-LD markup with real-time validation and clean formatting for semantic SEO.
Free How-To schema generator: create valid Schema.org HowTo structured data with steps, durations, supplies, and tools for semantic search.
Free Course schema generator: generate Google-compliant Course structured data with providers, credentials, and course instances.
Free Job Posting schema generator: create Google-compliant JobPosting JSON-LD with hiring organization, salary range, and remote telecommute settings.
Free Dataset schema generator: create Google Dataset Search-compliant JSON-LD markup with licensing, distribution downloads, and DOI identifiers.
Free Book schema generator: build Schema.org Book structured data with ISBN identifiers, authors, editions, and literary work properties.
Free Review Snippet schema generator: construct valid Schema.org Review and AggregateRating markup aligned with Google rich snippet policies.
Free Merchant Return Policy schema generator: generate Google Merchant Listing-compliant MerchantReturnPolicy JSON-LD markup.
Free Vacation Rental schema generator: build Schema.org VacationRental and LodgingBusiness JSON-LD with amenities, check-in, and occupancy.
Free Schema property completeness checker: audit pasted JSON-LD markup against Schema.org and Google recommended property specifications.
Audit HTTP status, canonical tags, mobile headers, and crawl directives.
Generate robots meta tag (index/noindex, follow/nofollow) online. Free, 100% in-browser, no account.
Generate X-Robots-Tag HTTP header for non-HTML files. Free, 100% in-browser, no account.
Generate sitemap index file from a list of sitemap URLs. Free, 100% in-browser, no account.
Generate image sitemap from a list of image URLs with optional titles and captions. Free, 100% in-browser, no account.
Generate video sitemap from a list of video URLs with metadata. Free, 100% in-browser, no account.
Validate XML sitemap for well-formedness and Google limits (50,000 URLs, 50 MB). Free, 100% in-browser, no account.
Check canonical tags on any webpage. Free, 100% in-browser, no account.
Extract meta tags and canonical from any HTML page. Free, 100% in-browser, no account.
Generate favicon HTML markup (icon and apple-touch-icon tags). Free, 100% in-browser, no account.
Generate preload or preconnect HTML tags with example values. Free, 100% in-browser, no account.
Clean, analyze, compare, and merge Google Search Console data exports.
Striking distance keyword finder: upload a Search Console export and list queries in the position range you choose, sorted by impressions. Free.
Keyword cannibalization finder: upload query and page data and see which queries bring up more than one of your pages, with clicks and impressions. Free.
Branded vs non-branded query splitter: upload Search Console queries, enter your brand terms and see clicks and impressions for each group. Free.
Content decay checker: upload two Search Console page exports and see which pages lost clicks, impressions or position between them. Free.
Query clustering tool: group Search Console queries that share words, with clicks and impressions per group. Free, works with any language.
Low CTR page finder: upload Search Console data and find pages or queries whose CTR is low compared with your own pages at similar positions. Free.
Search Console period comparer: upload two exports and see the change in clicks, impressions, CTR and position for every query or page. Free.
Page query counter: upload query and page data and see how many different queries each page appears for, with clicks and impressions. Free.
Question query extractor: pull how, what, why and other question searches out of your Search Console queries, with clicks and impressions. Free.
Search Console CSV merger: combine several Search Console exports into one file, stacked with a source column or summed by query or page. Free.
Free SEO impression drop detector: compare two Search Console performance periods to identify significant visibility declines and lost impressions.
Free high impression low position finder: uncover high-demand queries and pages ranking in positions 11-50 with high organic impressions.
Free zero click query finder: analyze Search Console performance data to isolate high-impression queries generating zero clicks on Google.
Free search position movement tracker: compare GSC performance periods to track ranking winners, losers, and position volatility.
Free device SEO performance comparator: analyze mobile, desktop, and tablet Search Console metrics to isolate mobile CTR and ranking gaps.
Free country SEO performance analyzer: compare international Search Console performance by clicks, impressions, CTR, and average position.
Free search appearance performance analyzer: evaluate rich snippet results, merchant listings, and specialized SERP features from GSC exports.
Free query-to-page performance mapper: map GSC query and landing page combinations to identify ranking distribution and cannibalization.
Free SEO traffic forecast calculator: project organic click growth from target ranking improvements using transparent CTR curve models.
Free Search Console data anomaly detector: identify statistical outliers, unexpected traffic drops, and logging anomalies in daily GSC series.
Generate keyword variations, clean keyword lists, and map URL slugs.
Keyword combiner: join up to four word lists into every combination, choose the order and separator, and add match type symbols. Free.
Long-tail keyword expander: add prefixes and suffixes such as "how to", "best" or "for beginners" to your seed keywords to get longer ideas. Free.
Keyword grouping tool: sort a keyword list into groups you name, using words you choose, or group automatically by a shared word. Free.
Keyword list cleaner: lowercase, trim, remove symbols and duplicates, filter by word count and drop unwanted words from any keyword list. Free.
Keyword match type formatter: convert a keyword list into broad, "phrase" or [exact] match format, one type or several at once. Free.
Negative keyword finder: count every word in a search term list, mark the irrelevant ones and export them as a negative keyword list. Free.
Google search operator builder: build site:, filetype: and Google Images searches from simple fields, then open the search in a new tab. Free.
Keyword to URL slug mapper: turn a keyword list into clean URL slugs, find clashes and check which keywords already match a page on your site. Free.
Free keyword modifier generator: combine seed search terms with intent-based transactional, informational, and comparison modifiers.
Free keyword intent classifier: automatically classify search queries into Informational, Commercial, Transactional, and Navigational intents.
Free heuristic keyword difficulty estimator: evaluate organic ranking competitiveness using transparent rule-based search intent and query factors.
Free keyword opportunity score calculator: prioritize SEO keyword targets using transparent volume, difficulty, and business value weighting formulas.
Free keyword seasonality planner: analyze monthly search trend distribution and calculate editorial publishing lead times without fake data.
Free keyword localization generator: build localized search phrase permutations across cities, regions, and 'near me' queries for local SEO.
Free keyword n-gram analyzer: extract frequent unigram, bigram, and trigram phrase patterns from search query exports and keyword lists.
Free keyword frequency distribution tool: count word occurrences, measure length distributions, and identify dominant recurring search themes.
Free keyword overlap analyzer: compare multiple keyword lists, compute Jaccard similarity, and discover competitive keyword gaps.
Free keyword priority matrix generator: rank search opportunities into a 2x2 prioritization grid using customizable scoring weights.
Free HTTP status code checker: inspect response codes, redirect paths, response headers, and latency for any URL. Fast, secure, and private.
Free bulk HTTP status code checker: batch inspect status codes, redirect destinations, and latency for URL lists with safe concurrency.
Free redirect chain checker: visualize full redirect paths, intermediate 301/302 hops, status codes, and final destination URLs.
Free redirect loop detector: identify infinite redirect cycles, self-referencing loops, and broken redirect paths before search crawlers fail.
Free broken link checker: extract links from HTML source or check live URLs to detect 404 errors, dead links, and broken anchors.
Free mixed content checker: audit HTML and HTTPS URLs to detect insecure HTTP scripts, stylesheets, images, and iframes.
Free HTTP security headers checker: analyze HSTS, CSP, X-Frame-Options, and Referrer-Policy response headers with actionable security grades.
Free HTTP to HTTPS redirect checker: verify your site enforces 301 permanent encryption redirects and protects against protocol downgrade attacks.
Free WWW vs Non-WWW checker: verify hostname redirection consistency to prevent split PageRank and duplicate content penalties.
Free trailing slash consistency checker: test URL slash variants to ensure standard 301 consolidation and eliminate duplicate URL indexation.
Free SEO content audit tool: analyze text and HTML against transparent, rule-based on-page checklists including title, headings, word count, and readability.
Free thin content detector: measure meaningful content length, lexical diversity, and boilerplate ratio to identify pages requiring editorial expansion.
Free duplicate heading checker: identify repeated H1-H6 headings in your HTML markup to resolve accessibility conflicts and crawler confusion.
Free keyword prominence checker: measure how early and prominently your target keyword appears in titles, H1s, introductory copy, and subheadings.
Free first 100 words keyword checker: examine your article opening for primary keyword presence, word positioning, and direct answer readiness.
Free paragraph length analyzer: audit word, sentence, and character counts across paragraphs to eliminate mobile wall-of-text fatigue.
Free sentence length analyzer: measure average sentence length, standard deviation, and identify long, winding sentences that hurt comprehension.
Free text-to-HTML ratio checker: calculate exact code-to-content proportions to detect inline styling, heavy scripts, and HTML markup bloat.
Free SEO content outline generator: create comprehensive, intent-aligned H2 and H3 article outlines customized by topic, audience, and format.
Free above-the-fold content analyzer: inspect HTML elements in the initial viewport area to evaluate hero banners, H1 visibility, and content presence.
Free image file size analyzer: inspect local image file sizes, binary MIME signatures, and network transfer time estimates with zero server uploads.
Free image dimension checker: inspect image natural width, height, aspect ratio, megapixels, and CLS risk directly in your browser without uploading.
Free image SEO filename generator: convert messy camera and stock filenames into keyword-rich, URL-safe, hyphenated file names for Google Images.
Free image aspect ratio calculator: calculate proportional dimensions, simplify aspect ratios, and generate CSS aspect-ratio rules for zero CLS.
Free image compression estimator: test real in-browser Canvas compression across quality levels to measure actual byte savings with zero server uploads.
Free WebP image converter: convert PNG, JPEG, and BMP images to modern WebP format directly in your browser with quality controls and instant download.
Free image metadata viewer: inspect EXIF tags, camera details, GPS flags, and IPTC creator properties in browser memory with zero server uploads.
Free responsive image srcset generator: generate standard srcset, sizes, and HTML5 picture markup for responsive web performance and Core Web Vitals.
Free lazy loading HTML generator: generate performance-optimized img and picture markup with loading="lazy", decoding="async", and LCP safeguards.
Free image SEO audit tool: audit image markup for missing alt attributes, missing dimensions, LCP lazy loading issues, and format optimizations.
Free Google PageSpeed score checker: inspect genuine Lighthouse performance scores and CrUX field data via API or uploaded Lighthouse JSON.
Free Core Web Vitals analyzer: evaluate real LCP, INP, and CLS thresholds against Google official 75th percentile ranking criteria.
Free mobile vs desktop speed comparator: compare real Lighthouse scores, LCP, TBT, and CLS performance across mobile and desktop environments.
Free Largest Contentful Paint analyzer: diagnose LCP sub-part durations, identify hero image bottlenecks, and optimize sub-2.5 second render times.
Free Cumulative Layout Shift analyzer: pinpoint layout shifting elements, font swap shifts, and missing dimensions to achieve a sub-0.1 CLS score.
Free render blocking resources finder: identify critical CSS and JavaScript files delaying FCP and LCP with actionable defer/async remediation.
Free unused CSS opportunity finder: inspect stylesheet coverage reports, wasted bytes, and critical path CSS extraction opportunities.
Free image performance opportunity finder: identify oversized images, missing modern formats (WebP/AVIF), and off-screen lazy loading savings.
Free JavaScript performance audit: evaluate script evaluation time, long tasks, unused JS payloads, and main-thread blocking impact on INP.
Free website accessibility audit summary: review automated WCAG contrast, ARIA, and alt checks alongside essential manual testing criteria.
Free NAP consistency checker: audit business name, address, and phone citations across directory listings with diff comparison and zero tracking.
Free citation formatter: generate standardized NAP citation templates for Google Business Profile, Apple Maps, Bing Places, and Yelp.
Free local SEO audit checklist: comprehensive interactive audit covering Google Business Profile, citations, local schema, and review signals.
Free GBP description checker: validate business descriptions against character limits, prohibited links, phone numbers, and editorial guidelines.
Free local keyword generator: create geo-targeted service, city, neighborhood, and intent search term permutations for local search optimization.
Free city landing page planner: build location-specific landing page blueprints with unique local proofs, testimonials, and schema structure.
Free service area page planner: structure compliant service area business (SAB) pages without generating doorway spam or thin content.
Free local SEO title generator: create CTR-driven, pixel-budgeted local title tags and meta descriptions formatted for city and state intent.
Free business hours schema builder: construct Schema.org openingHoursSpecification JSON-LD with standard days, split shifts, and holidays.
Free review response generator: create authentic, brand-aligned customer reply templates for 5-star praise, neutral feedback, and negative complaints.
Plan site migrations, validate 301 URL mappings, compare content diffs, simulate CTR gains, and audit orphan pages.
Free SEO migration checklist generator: produce customized technical checklists for domain moves, CMS transitions, and site redesigns.
Free 301 URL mapping validator: audit redirect maps for missing targets, duplicate sources, redirect chains, and circular loops.
Free content change comparison tool: inspect text and HTML diffs side-by-side to highlight added, removed, and modified editorial copy.
Free SERP CTR opportunity simulator: forecast organic clicks and traffic gains across ranking improvement scenarios with custom CTR curves.
Free SEO ROI calculator: project estimated financial returns, net revenue, and break-even timelines from traffic and conversion models.
Free SEO audit report generator: compile technical findings and recommendations into formatted client-ready executive reports.
Free SEO issue prioritizer: score technical backlog tasks using transparent impact, effort, and business criticality weighting matrices.
Free internal link opportunity finder: match target keyword topics with candidate source pages to identify high-equity internal linking paths.
Free orphan page finder: cross-reference sitemap URLs against internal crawl links to uncover isolated, unlinked pages in browser memory.
Free duplicate content checker: compute Jaccard n-gram similarity and word overlap percentages between two texts to flag cannibalization risks.
