La caja de herramientas SEO
Comprobaciones SEO rápidas y honestas que puedes ejecutar ahora mismo: sin cuenta, sin correo, sin tarjeta de crédito. Cada resultado son datos reales que calculamos en directo, nunca una puntuación inventada.
Domain Trust Signals
A real, verifiable trust report: domain age, SSL status, security headers, and sitemap/robots presence — combined in one check. (Not a substitute for Moz DA or Ahrefs DR — those are paid, proprietary metrics we don't fabricate.)
Usar herramienta → Auditoría del sitioMeta Tags Analyzer
Check any page's title tag, meta description, canonical URL and robots directives for length and SEO issues.
Usar herramienta → Auditoría del sitioRobots.txt Tester
Fetch and check any website's robots.txt, and test whether a specific path is allowed to be crawled.
Usar herramienta → Auditoría del sitioXML Sitemap Validator
Check that a sitemap URL is valid XML, see how many URLs it lists, and whether lastmod dates are present.
Usar herramienta → Auditoría del sitioSocial Share Preview
See how a URL will look when shared on Facebook, LinkedIn or Twitter/X — pulls the real Open Graph and Twitter Card tags.
Usar herramienta → Auditoría del sitioText-to-HTML Ratio Checker
Calculate how much of a page is visible text versus markup — a low ratio can be a thin-content signal.
Usar herramienta → Auditoría del sitioSchema Markup Validator
Finds every JSON-LD structured-data block on a page, lists the schema types used, and flags missing required fields.
Usar herramienta → Auditoría del sitioOn-Page SEO Checker
Enter a page and your target keyword — see whether it appears in the title, H1, URL, meta description and opening text.
Usar herramienta → Auditoría del sitioHeading Structure Checker
See a page's full H1–H6 outline and catch structural issues like a missing H1, multiple H1s, or skipped heading levels.
Usar herramienta → Auditoría del sitioDuplicate Title/Meta Comparer
Compare two URLs' titles and meta descriptions to check how similar or duplicated they are.
Usar herramienta → Herramientas de backlinksBacklink & Anchor Text Verifier
Paste a page URL and your domain — we'll confirm whether the link exists, show the exact anchor text, and whether it's dofollow.
Usar herramienta → Herramientas de backlinksLink Analyzer
Full breakdown of every link on a page: internal vs external counts, dofollow vs nofollow, and the external domains linked to.
Usar herramienta → Herramientas de backlinksBroken Link Checker
Scan a page's links and flag any that return an error (404, 500, etc). Checks up to 20 links per scan.
Usar herramienta → Herramientas de dominioDomain Age Checker
Real WHOIS lookup showing when a domain was registered, its age, and expiry date.
Usar herramienta → Herramientas de dominioDNS Lookup
Look up a domain's A, AAAA, MX, TXT, NS and CNAME records in real time.
Usar herramienta → Herramientas de dominioIP Lookup
Resolve a domain to its IPv4 and IPv6 addresses.
Usar herramienta → Herramientas de dominioReverse DNS (PTR) Lookup
Look up the hostname an IP address resolves back to. (Note: this is a genuine PTR lookup, not a list of every domain hosted on that IP — no free source can honestly provide that.)
Usar herramienta → Herramientas de dominioSSL Certificate Checker
Check a domain's SSL certificate — issuer, validity dates, and days remaining before it expires.
Usar herramienta → Herramientas de dominioHTTP Header Checker
See a page's full response headers — server, caching, security headers and more.
Usar herramienta → Herramientas de dominioRedirect Checker
Follow a URL's complete redirect chain step by step, and see the final destination and status code.
Usar herramienta → Herramientas de contenidoSERP Snippet Preview
See how your title and description will actually look in Google search results, live as you type — no page load needed.
Usar herramienta → Herramientas de contenidoKeyword Density Checker
Paste your content or a URL to see keyword and keyphrase frequency, and spot over-optimization.
Usar herramienta → Herramientas de contenidoWord Counter, Character Counter & Reading Time
Instant word count, character count, estimated reading time, and a Flesch reading-ease score as you type or paste.
Usar herramienta → Herramientas de contenidoMeta Title & Description Generator
Template-based title and meta description generator with live length meters. (Formula-based, not AI — we don't label template output as "AI-generated.")
Usar herramienta → Herramientas de palabras claveKeyword Intent Classifier
A simple, transparent rule-based classifier that suggests whether a keyword looks informational, commercial, transactional or navigational.
Usar herramienta → Herramientas de palabras claveLong-Tail Keyword Generator
Turn a seed keyword into dozens of long-tail variations using proven question, modifier and intent patterns — a starting list to research further.
Usar herramienta → SEO localCity + Service Keyword Generator
Combine your services with a list of cities to instantly generate local keyword and landing-page ideas for local SEO campaigns.
Usar herramienta → SEO técnicoRobots.txt Generator
Build a clean, valid robots.txt file with the right Allow/Disallow rules and sitemap line — copy-paste ready.
Usar herramienta → SEO localLocalBusiness Schema Generator
Generate valid LocalBusiness JSON-LD structured data from your business details — helps local search understand your NAP info.
Usar herramienta → SEO localNAP Consistency Checker
Paste your business Name, Address and Phone as they appear on different listings to catch inconsistencies that hurt local SEO.
Usar herramienta → Herramientas para agencias SEOBacklink Campaign Calculator
Plan a link-building campaign: enter your link target, cost per link and duration to see total cost, links per month, and a week-by-week pace.
Usar herramienta → Herramientas para agencias SEOGuest Post ROI Calculator
Estimate the potential return of a backlink campaign from expected traffic, conversion rate and order value. All figures are clearly-labelled estimates.
Usar herramienta → Herramientas para agencias SEOSEO Campaign Planner
Enter your website, target country, budget, link count and duration to generate a structured, phase-by-phase campaign outline you can copy.
Usar herramienta → Herramientas para agencias SEOMonthly SEO Budget Calculator
Break a monthly SEO budget across backlinks, content and technical work to see how many links and articles it realistically covers.
Usar herramienta → Herramientas de backlinksAnchor Text Distribution Planner
Enter your total link count to get a natural-looking anchor text mix (branded, exact, partial, generic, URL) so your profile does not look over-optimized.
Usar herramienta → Herramientas para agencias SEORequired Backlinks Estimator
A rough, transparent estimate of how many quality links a campaign might target based on competition level — clearly labelled as a planning heuristic, not a guarantee.
Usar herramienta → SEO técnicoImage Alt Text Checker
Scan a page and list every image, flagging any that are missing alt text — important for accessibility and image SEO.
Usar herramienta → Herramientas de textoHerramienta de caracteres invisibles
Detecta y elimina caracteres Unicode invisibles u ocultos, como espacios de ancho cero, BOM y espacios de no separación, por completo en tu navegador.
Usar herramienta → Herramientas de textoCase Converter
Convert text to UPPERCASE, lowercase, Title Case, or Sentence case instantly in your browser.
Usar herramienta → Herramientas de textoRemove Extra Spaces
Strip multiple spaces, leading/trailing spaces, and blank lines from text — great for cleaning copy-pasted content.
Usar herramienta → Herramientas de textoDuplicate Line Remover
Remove duplicate lines from any list or block of text. Useful for cleaning keyword lists, URLs, and data exports.
Usar herramienta → Herramientas de textoLine Sorter
Sort lines of text alphabetically, reverse-alphabetically, or by length. Works entirely in your browser.
Usar herramienta → Herramientas de textoFind & Replace Tool
Find and replace text within a block of content — case-sensitive or case-insensitive, with an exact match count.
Usar herramienta → Herramientas de textoText Reverser
Reverse text character by character, or reverse the order of lines — handy for quick text manipulations.
Usar herramienta → Herramientas de textoLorem Ipsum Generator
Generate placeholder Lorem Ipsum text of any length — words, sentences, or paragraphs — for design mockups and templates.
Usar herramienta → Herramientas de textoURL Encoder / Decoder
Encode or decode URL-encoded strings (percent-encoding). Useful for query strings, link building and redirect work.
Usar herramienta → Herramientas de textoBase64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 back to readable text — runs entirely in your browser.
Usar herramienta → Herramientas para desarrolladoresJSON Formatter & Validator
Paste raw JSON to format it with proper indentation, validate its syntax, and minify it. All processing happens in your browser.
Usar herramienta → Herramientas para desarrolladoresHTML Entity Encoder / Decoder
Encode special characters to HTML entities (& → &) or decode entities back to readable characters.
Usar herramienta → Herramientas de marketingUTM Campaign Builder
Build properly formatted UTM tracking URLs for Google Analytics campaigns — source, medium, campaign, term, and content.
Usar herramienta → Herramientas para desarrolladoresUnix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Enter a timestamp or a date to see both formats.
Usar herramienta → Herramientas de diseño y colorHEX ↔ RGB Colour Converter
Convert between HEX and RGB colour values instantly. Also shows the HSL equivalent. Works in your browser.
Usar herramienta → Herramientas de diseño y colorColour Contrast Checker
Check the contrast ratio between two colours against WCAG AA and AAA accessibility standards for text readability.
Usar herramienta → Herramientas de diseño y colorCSS Gradient Generator
Create linear and radial CSS gradients with a visual preview and ready-to-copy CSS code. No libraries required.
Usar herramienta → Herramientas de diseño y colorAspect Ratio Calculator
Calculate image dimensions while maintaining aspect ratio. Enter any two dimensions to find the third. Ideal for responsive design.
Usar herramienta → Herramientas de marketingBlog Title Generator
Generate catchy blog title ideas from a topic using proven headline patterns. Template-based — clearly labelled, not AI.
Usar herramienta → Herramientas de marketingSocial Media Image Size Guide
Current recommended image dimensions for Facebook, Instagram, Twitter/X, LinkedIn, Pinterest and YouTube — all in one reference.
Usar herramienta → SEO localNAP Formatter
Format your business Name, Address and Phone into a consistent NAP block ready to paste into citations, websites and directories.
Usar herramienta → SEO localLocal Meta Description Generator
Generate localised meta descriptions using your business name, service, and target city. Template-based with live character count.
Usar herramienta → SEO técnicoFAQ Schema Generator
Enter questions and answers to generate valid FAQPage JSON-LD structured data — copy-paste ready for your website.
Usar herramienta → CalculadorasPercentage Calculator
Work out percentages three ways: X% of Y, X is what % of Y, and percentage increase/decrease.
Usar herramienta → CalculadorasDiscount Calculator
Enter a price and a discount to see the amount saved and the final price you pay.
Usar herramienta → CalculadorasAge Calculator
Calculate exact age in years, months and days from a date of birth to any date.
Usar herramienta → CalculadorasHours Calculator
Add up hours and minutes between a start and end time, with an optional break deduction.
Usar herramienta → CalculadorasLoan Calculator
Calculate monthly loan repayments, total interest and total cost from amount, rate and term.
Usar herramienta → CalculadorasCompound Interest Calculator
See how savings or investments grow over time with compound interest and regular contributions.
Usar herramienta → CalculadorasProfit Margin Calculator
Turn cost and revenue into gross profit, profit margin % and markup %.
Usar herramienta → CalculadorasROI Calculator
Calculate return on investment as a percentage and net return from amount invested and returned.
Usar herramienta → CalculadorasCPM Calculator
Work out CPM, total ad cost or impressions — solve for whichever value you're missing.
Usar herramienta → CalculadorasCPC & CTR Calculator
Calculate cost-per-click, click-through rate and total spend for a PPC campaign.
Usar herramienta → CalculadorasConversion Rate Calculator
Turn visitors and conversions into a conversion rate %, plus cost per conversion.
Usar herramienta → CalculadorasBMI Calculator
Calculate Body Mass Index from height and weight (metric or imperial) with WHO category ranges.
Usar herramienta → Herramientas para desarrolladoresJSON Viewer
Paste JSON and explore it as a collapsible, colour-coded tree — great for large API responses.
Usar herramienta → Herramientas para desarrolladoresHTML Formatter & Beautifier
Re-indent messy or minified HTML into clean, readable markup with consistent nesting.
Usar herramienta → Herramientas para desarrolladoresCSS Minifier
Strip comments and whitespace from CSS to shrink file size for faster page loads.
Usar herramienta → Herramientas para desarrolladoresRegex Tester
Test JavaScript regular expressions against sample text and see every match highlighted live.
Usar herramienta → UtilidadesText to Binary Converter
Convert text to binary (and back) using standard UTF-8 byte encoding.
Usar herramienta → UtilidadesBinary to Text Converter
Decode binary (space-separated 8-bit bytes) back into readable UTF-8 text.
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