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Herramientas SEO
69 herramientasDuplicate Content CheckerCompare two texts and see exactly how similar they are.Keyword Difficulty CheckerEstimate how hard a keyword is to rank for.SEO Audit ToolScan a page for on-page SEO issues.Schema Markup GeneratorGenerate JSON-LD structured data for any page type.Domain Rating CheckerCheck a domain's authority and backlink strength.Meta Title GeneratorCreate SEO-optimized meta titles with the right length.Anchor Text CheckerAudit your link anchor text for SEO quality.Canonical URL CheckerVerify your canonical tag is present, unique, and correct.Disavow File GeneratorBuild a clean Google disavow file from a messy link list.Dofollow CheckerCheck whether a link passes PageRank (dofollow).Duplicate Title CheckerFind duplicate and out-of-range page titles in bulk.Heading CheckerAudit your H1-H6 structure for SEO and accessibility.Hreflang Tag GeneratorGenerate correct hreflang alternate links for multilingual pages.Internal Link GeneratorCreate natural anchor-text variations for internal links in one click.JSON-LD Schema GeneratorGenerate valid schema.org JSON-LD for WebSite, Article, FAQ, Product, and more.Keyword Density CheckerCheck keyword density and top terms in any article.Meta Description GeneratorWrite SERP-ready meta descriptions that stay within 160 characters.Mobile Friendly CheckerCheck your HTML for mobile-friendliness basics.Nofollow CheckerCheck whether a link has rel=nofollow.Open Graph Image Generator (SVG)Design a 1200×630 OG share image as clean, editable SVG.robots.txt GeneratorCreate a clean robots.txt with disallow rules, crawl delay, and sitemap reference.XML Sitemap GeneratorBuild a valid XML sitemap from a list of paths in one click.URL Slug GeneratorTurn any page title into a clean, SEO-friendly URL slug.Title Tag CheckerCheck your <title> tag for SEO basics.Citation GeneratorGet a copy-ready NAP block, 10 major US citation directories, and a consistency checklist.Duplicate Meta Description CheckerSpot identical meta descriptions and titles across a batch of pages.Featured Snippet CheckerSee if your page is shaped to win the position-zero snippet.Google Snippet Preview (Mobile)See your snippet on a mobile Google results page and as a featured-style snippet.Image Optimization CheckerAudit your page HTML for slow, shifting, and inaccessible images.Local Keyword GeneratorBuild a local-SEO keyword sheet for any service and city in one click.Long-Tail Keyword GeneratorTurn one seed keyword into 15-25 long-tail phrases tuned to your search intent.LSI Keyword GeneratorMap any seed keyword to related terms, questions, and long-tails in your browser.Meta Tag PreviewPaste your page's raw HTML and see which meta tags Google would pick up.Title & Meta Description CheckerCatch missing or mistitled titles and meta descriptions before the SERP does.Page Weight CheckerEstimate how heavy your page is from its HTML source alone.Rich Snippet TesterValidate your JSON-LD markup for rich results before Google sees it.Google SERP PreviewPreview how your page looks in Google results before publishing.Thin Content CheckerFind out whether your page has enough real text to rank.Topic Cluster GeneratorDraft a pillar page and its supporting cluster articles in seconds.Voice Search OptimizerTurn a spoken question into a 40–60 word voice-ready answer plus FAQPage JSON-LD.Favicon GeneratorTurn 1–2 letters or an emoji into a full set of favicon PNGs, entirely in your browser.Free Disavow File GeneratorBuild a clean Google disavow file from a messy link list. 100% free — no sign-up, no limits, no watermark.Disavow File Generator OnlineBuild a clean Google disavow file from a messy link list. Use it online — no install, works in any browser.Free JSON-LD Schema GeneratorGenera JSON-LD válido de schema.org para WebSite, Article, FAQ, Product y más. 100% gratis.Free Keyword Density CheckerCheck keyword density and top terms in any article. 100% free — no sign-up, no limits, no watermark.Keyword Density Checker OnlineCheck keyword density and top terms in any article. Use it online — no install, works in any browser.Free Local Keyword GeneratorArma una hoja de keywords de local SEO para cualquier servicio y ciudad. 100% gratis, sin registro.Free Long-Tail Keyword GeneratorConvierte una seed keyword en 15 a 25 long-tail phrases ajustadas a tu intención. 100% gratis.Long-Tail Keyword Generator OnlineConvierte una seed keyword en 15 a 25 long-tail phrases ajustadas a tu intención. Online, gratis.Free LSI Keyword GeneratorMapea una seed keyword a términos relacionados, preguntas y long-tails, en tu navegador. Gratis.LSI Keyword Generator OnlineMapea una seed keyword a términos relacionados, preguntas y long-tails, en tu navegador. Online.Free Meta Description GeneratorEscribe meta descriptions listas para SERP que se quedan dentro de 160 caracteres. 100% gratis.Meta Description Generator OnlineEscribe meta descriptions listas para SERP que se quedan dentro de 160 caracteres. Online, gratis.Free Meta Title GeneratorCreate SEO-optimized meta titles with the right length. 100% free — no sign-up, no limits, no watermark.Meta Title Generator OnlineCreate SEO-optimized meta titles with the right length. Use it online — no install, works in any browser.Free Mobile Friendly CheckerCheck your HTML for mobile-friendliness basics. 100% free — no sign-up, no limits, no watermark.Mobile Friendly Checker OnlineCheck your HTML for mobile-friendliness basics. Use it online — no install, works in any browser.Free Open Graph Image Generator (SVG)Design a 1200×630 OG share image as clean, editable SVG. 100% free — no sign-up, no limits, no watermark.Open Graph Image Generator (SVG) OnlineDesign a 1200×630 OG share image as clean, editable SVG. Use it online — no install, works in any browser.Free robots.txt GeneratorCrea un robots.txt limpio con reglas disallow, crawl delay y referencia al sitemap. Gratis.robots.txt Generator OnlineCrea un robots.txt limpio con reglas disallow, crawl delay y referencia al sitemap. Online.Free Google SERP PreviewPrevisualiza cómo se verá tu página en los resultados de Google antes de publicar. 100% gratis.Google SERP Preview OnlinePrevisualiza cómo se verá tu página en los resultados de Google antes de publicar. Online, gratis.Free XML Sitemap GeneratorBuild a valid XML sitemap from a list of paths in one click. 100% free — no sign-up, no limits, no watermark.XML Sitemap Generator OnlineBuild a valid XML sitemap from a list of paths in one click. Use it online — no install, works in any browser.Free URL Slug GeneratorTurn any page title into a clean, SEO-friendly URL slug. 100% free — no sign-up, no limits, no watermark.URL Slug Generator OnlineTurn any page title into a clean, SEO-friendly URL slug. Use it online — no install, works in any browser.Free Title Tag CheckerCheck your <title> tag for SEO basics. 100% free — no sign-up, no limits, no watermark.Title Tag Checker OnlineCheck your <title> tag for SEO basics. Use it online — no install, works in any browser.
Calculadoras
106 herramientasROI CalculatorCalculate return on investment for any project.CAC CalculatorCalculate customer acquisition cost.LTV CalculatorEstimate customer lifetime value.Unit Economics CalculatorModel revenue, cost, and margin per unit.Churn Rate CalculatorCalculate customer or revenue churn.COGS CalculatorCalculate cost of goods sold.Debt to Equity CalculatorCalculate the debt-to-equity ratio.Break Even CalculatorFind your break-even point in units and revenue.Cap Table CalculatorModel founder and investor ownership across rounds.Equity Dilution CalculatorSee how a funding round dilutes ownership.Revenue Multiple CalculatorEstimate startup valuation from ARR and growth.Convertible Note CalculatorModel how a convertible note converts to equity.Burn Rate CalculatorCalculate gross/net burn and cash runway.Angel Investment CalculatorSize an angel round and its ownership impact.Profit Margin CalculatorCalculate gross, net, and markup margins from revenue and cost.Annual to Monthly Salary ConverterConvert an annual salary into monthly, weekly, and hourly amounts.CAGR CalculatorCalculate the compound annual growth rate between two values.Cash Flow CalculatorSee your monthly net cash flow, ending cash, and how long your runway lasts.Commission CalculatorCalculate the commission earned on any sale at your rate.EBITDA CalculatorCalculate EBITDA and EBITDA margin from your income statement.Hourly to Salary ConverterTurn an hourly rate into weekly, monthly, and annual salary.Markup CalculatorSee how much you mark up your cost and whether your pricing is thin, healthy, or premium.Overtime Pay CalculatorCalculate regular pay, overtime at 1.5x, and total pay over any number of weeks.Rule of 72 CalculatorEstimate how long money takes to double at a given annual rate.Sales Tax CalculatorAdd sales tax to a pre-tax amount and see the tax and total due.VAT CalculatorAdd VAT to a net price and see the tax, gross price, and net price.Working Capital CalculatorCalculate net working capital and the current ratio for liquidity.Contractor vs Employee Cost CalculatorCompare the fully loaded annual cost of the same hours as an employee versus a contractor.Contribution Margin CalculatorWork out how much of each revenue dollar contributes to covering fixed costs and profit.Cover Letter GeneratorA three-paragraph cover letter built from your experience, your skills, and the job you are applying for.Current Ratio CalculatorCheck your short-term liquidity — can current assets cover current liabilities?Employee Cost CalculatorSee the real annual, monthly, and hourly cost of an employee — salary plus employer costs.Gross Margin CalculatorFind your gross profit and gross margin to see how much revenue survives direct costs.Interview Question GeneratorLista determinística de preguntas de entrevista para 8 roles y 3 niveles, más una nota de qué escuchar.Inventory Turnover CalculatorSee how fast your stock sells and turns into cash, in turns per year and days of inventory.Invoice Late Fee CalculatorCalculate the daily and total late fee on an overdue invoice, and the new balance due.Leave Letter GeneratorA formal leave request letter — annual, sick, family emergency, or personal — with dates and a coverage plan.Net Margin CalculatorSee what share of every revenue dollar ends up as actual profit after everything is paid.Operating Margin CalculatorMeasure your EBIT margin — the profit your operations generate before interest and tax.Price Increase CalculatorFind the new price that hits your target margin and see exactly how much you'd be raising.Resignation Letter GeneratorCarta formal de renuncia ajustada a tu motivo: crecimiento, mudanza, compensación, familia, salud u otro.Work Schedule CalculatorTurn daily hours and an hourly rate into weekly and annual hours and pay.50-30-20 Rule CalculatorSplit your monthly take-home pay into the 50-30-20 budget: needs, wants, and savings.Crypto Capital Gains Calculator (India)Estimate Indian capital gains tax on a crypto sale — short-term 20%, long-term 12.5% (indicative).Compound Interest CalculatorProyecta el monto final de un capital, simple o compuesto, anual, mensual o diario, con aportes mensuales.EMI Calculator (Business Loan)Calcula la cuota mensual (EMI), el interés total y el pago total de un préstamo empresarial en India, en INR.GST Calculator for Small BusinessAdd Indian GST to a price, or back it out of an inclusive price — across the 0/5/12/18/28% slabs.GST Input Tax Credit CalculatorOffset the input GST paid to suppliers against the output GST collected from customers, in INR.MRR CalculatorTurn customer count and price into MRR, ARR, and next month's churned MRR.Runway CalculatorSee how many months of cash you have left at your current burn.SAFE Note CalculatorEstimate the conversion price and stake a SAFE earns at a cap-priced next round.Seed Funding CalculatorSize your pre-seed, seed, or Series A round from burn, runway, and a reserve buffer.Startup Cost CalculatorAdd up team payroll, office, tools, and marketing into a monthly and first-year budget.Startup Valuation CalculatorEstimate a fair valuation range from ARR, growth, and stage.VC Investment CalculatorCompute investor ownership, post-money, and value per $1M from a priced round.Free Annual to Monthly Salary ConverterConvierte un salario anual en mensual, semanal y por hora. 100% gratis, sin registro ni límites.Annual to Monthly Salary Converter OnlineConvierte un salario anual en mensual, semanal y por hora. Online, sin instalar nada.Free Cash Flow CalculatorVe tu flujo de caja neto mensual, el saldo final y tu runway. 100% gratis, sin registro.Cash Flow Calculator OnlineVe tu flujo de caja neto mensual, el saldo final y tu runway. Online, sin instalar nada.Free Commission CalculatorCalculate the commission earned on any sale at your rate. 100% free — no sign-up, no limits, no watermark.Commission Calculator OnlineCalculate the commission earned on any sale at your rate. Use it online — no install, works in any browser.Free Compound Interest CalculatorProyecta el monto final de un capital, simple o compuesto, anual, mensual o diario, con aportes. Gratis.Compound Interest Calculator OnlineProyecta el monto final de un capital, simple o compuesto, anual, mensual o diario, con aportes. Online.Free Cover Letter GeneratorCover letter de tres párrafos desde tu experiencia, tus skills y el puesto al que aplicas. 100% gratis.Cover Letter Generator OnlineCover letter de tres párrafos desde tu experiencia, tus skills y el puesto. Online, sin instalar nada.Free EMI Calculator (Business Loan)Calcula la cuota mensual (EMI), el interés total y el pago total de un préstamo empresarial en INR. Gratis.EMI Calculator (Business Loan) OnlineCalcula la cuota mensual (EMI), el interés total y el pago total de un préstamo empresarial en INR. Online.Free Employee Cost CalculatorVe el costo real anual, mensual y por hora de un employee, salario más costos de empleador. 100% gratis.Employee Cost Calculator OnlineVe el costo real anual, mensual y por hora de un employee, salario más costos de empleador. Online, gratis.Free Gross Margin CalculatorEncuentra tu utilidad bruta y margen bruto para ver cuánto sobrevive la venta a los costos directos. Gratis.Gross Margin Calculator OnlineEncuentra tu utilidad bruta y margen bruto para ver cuánto sobrevive la venta a los costos directos. Online.Free GST Calculator for Small BusinessSuma GST indio a un precio o extráelo de uno incluido, en las franjas 0/5/12/18/28%. 100% gratis.GST Calculator for Small Business OnlineSuma GST indio a un precio o extráelo de uno incluido, en las franjas 0/5/12/18/28%. Online, gratis.Free Hourly to Salary ConverterTurn an hourly rate into weekly, monthly, and annual salary. 100% free — no sign-up, no limits, no watermark.Hourly to Salary Converter OnlineTurn an hourly rate into weekly, monthly, and annual salary. Use it online — no install, works in any browser.Free Interview Question GeneratorPreguntas de entrevista reales y determinísticas para 8 roles y 3 niveles, más qué escuchar. Gratis.Interview Question Generator OnlinePreguntas de entrevista reales y determinísticas para 8 roles y 3 niveles, más qué escuchar. Online.Free Invoice Late Fee CalculatorCalcula el recargo diario y total por atraso en una factura y el nuevo saldo debido. 100% gratis.Free Markup CalculatorVe cuánto subas tu costo y si tu precio es delgado, sano o premium. 100% gratis, sin registro.Markup Calculator OnlineVe cuánto subas tu costo y si tu precio es delgado, sano o premium. Online, sin instalar nada.Free Overtime Pay CalculatorCalcula el pago regular, las horas extras a 1.5x y el total por semana. 100% gratis, sin registro.Overtime Pay Calculator OnlineCalcula el pago regular, las horas extras a 1.5x y el total por semana. Online, sin instalar nada.Free Price Increase CalculatorEncuentra el nuevo precio que alcanza tu margen objetivo y cuánto subirías. 100% gratis, sin registro.Price Increase Calculator OnlineEncuentra el nuevo precio que alcanza tu margen objetivo y cuánto subirías. Online, sin instalar.Free Profit Margin CalculatorCalcula márgenes brutos, netos y markup desde ingresos y costo. 100% gratis, sin registro.Profit Margin Calculator OnlineCalcula márgenes brutos, netos y markup desde ingresos y costo. Online, sin instalar nada.Free Resignation Letter GeneratorCarta formal de renuncia ajustada a tu motivo: crecimiento, mudanza, compensación, familia o salud. Gratis.Resignation Letter Generator OnlineCarta formal de renuncia ajustada a tu motivo: crecimiento, mudanza, compensación, familia o salud. Online.Free Sales Tax CalculatorSuma sales tax a un monto antes de impuestos y ve el impuesto y el total. 100% gratis, sin registro.Sales Tax Calculator OnlineSuma sales tax a un monto antes de impuestos y ve el impuesto y el total. Online, sin instalar nada.Free VAT CalculatorSuma VAT a un precio neto y ve el impuesto, el precio bruto y la base neta. 100% gratis.VAT Calculator OnlineSuma VAT a un precio neto y ve el impuesto, el precio bruto y la base neta. Online, sin instalar.Free Work Schedule CalculatorConvierte horas diarias y tarifa por hora en horas y pago semanales y anuales. 100% gratis.Work Schedule Calculator OnlineConvierte horas diarias y tarifa por hora en horas y pago semanales y anuales. Online, gratis.Business Plan Template GeneratorBusiness plan de una página: executive summary, problema, solución, mercado, modelo, equipo y ask.Car Loan CalculatorEstimate your monthly car loan payment (EMI) from price, down payment, rate, and term.Discount CalculatorFind the final price, what you save, and the effective rate on any percent or flat-amount discount.Fixed Deposit CalculatorProject your fixed deposit's maturity amount, total interest, and effective APY.India Income Tax CalculatorEstimate your FY 2025-26 income tax under the new or old regime.Proposal Template GeneratorPropuesta de cliente en seis secciones: fondo, enfoque, entregables, cronograma, inversión y vigencia.Quote Template GeneratorCotización con tabla de partidas: cada monto es cantidad × precio unitario y el TOTAL se suma solo.Recommendation Letter GeneratorCarta formal de recomendación con fecha, tres párrafos y bloque de firma: laboral, académica o general.SIP CalculatorEstimate the future value of a monthly SIP with monthly compounding.SWOT Analysis TemplateWorksheet SWOT de cuatro cuadrantes con conteo por sección y una línea de foco determinística para empezar.Timesheet TemplateTimesheet semanal con tabla de proyecto, tarea y horas, y una fila TOTAL HOURS que suma la columna por ti.Tip CalculatorWork out the tip, the total to pay, and each person's share of a split bill.
Herramientas de texto
21 herramientasOCR - Image to TextExtract text from images and screenshots.Text CompareCompare two texts and highlight every difference.Text to HashGenerate MD5, SHA-1, SHA-256, and more from text.Word CounterCount words, characters, sentences, and reading time.Text Case ConverterConvert text to UPPERCASE, lowercase, Title Case, camelCase, and more.Character Counter & AnalyzerCount characters, unique characters, and find the most frequent one.Text Encoding ConverterConvert text to hex, octal, decimal, Base64, UTF-16LE, or UTF-32LE — and back.Remove Duplicate LinesDrop exact duplicate lines while keeping the first occurrence of each.Sort LinesSort your pasted lines A→Z, by number, or by length.Text to Slug GeneratorTurn any title or phrase into a clean, lowercase, hyphen-separated slug.Free Text Case ConverterConvierte texto a UPPERCASE, lowercase, Title Case, camelCase y más. 100% gratis, sin registro.Text Case Converter OnlineConvierte texto a UPPERCASE, lowercase, Title Case, camelCase y más. Online, sin instalar nada.Free Remove Duplicate LinesElimina líneas duplicadas exactas y conserva la primera ocurrencia de cada una. 100% gratis.Remove Duplicate Lines OnlineElimina líneas duplicadas exactas y conserva la primera ocurrencia de cada una. Online, gratis.Free Sort LinesSort your pasted lines A→Z, by number, or by length. 100% free — no sign-up, no limits, no watermark.Sort Lines OnlineSort your pasted lines A→Z, by number, or by length. Use it online — no install, works in any browser.Free Text to Slug GeneratorConvierte cualquier título o frase en un slug limpio, en minúsculas y con guiones. 100% gratis.Text to Slug Generator OnlineConvierte cualquier título o frase en un slug limpio, en minúsculas y con guiones. Online, gratis.Free Word CounterCount words, characters, sentences, and reading time. 100% free — no sign-up, no limits, no watermark.Word Counter OnlineCount words, characters, sentences, and reading time. Use it online — no install, works in any browser.Text SummarizerExtract the most important sentences from any text in your browser.
Herramientas de desarrollo
33 herramientasBase64 Encoder / DecoderEncode and decode Base64, with URL-safe mode.URL Query String BuilderBuild and parse URL query strings.Password Hash GeneratorGenerate and compare password hashes.Code DiffDiff two code snippets with word-level detail.UUID GeneratorGenerate UUID v4 and v7 in batches, with prefixes.Base64 Data URI GeneratorTurn text, CSS, JS, JSON, or SVG into a data:<mime>;base64, URI — UTF-8 safe.Cron Next Run CalculatorSee exactly when your 5-field cron expression fires next — to the minute.JSON Compare (Diff)Deep-diff two JSON documents: added, removed, and changed paths with old → new values.JSON to Code GeneratorInfer a typed data model from a JSON sample — Python, Rust, C#, Java, Go, or GraphQL.JWT Decoder & Expiry CheckerDecode a JWT's header and payload and check its exp claim against the current time.SQL Case ConverterRe-case SQL keywords to UPPERCASE, lowercase, or Title Case — strings untouched.SQL FormatterReformats messy SQL: uppercased keywords, one clause per line, indented subqueries.Unix Timestamp ConverterTurn a Unix timestamp into human-readable local, ISO 8601, and UTC dates in one step.URL ValidatorCheck a URL's scheme, host, port, query, fragment, and length against common failure modes.Free Base64 Data URI GeneratorConvierte texto, CSS, JS, JSON o SVG en un URI data:<mime>;base64, seguro para UTF-8. Gratis.Base64 Data URI Generator OnlineConvierte texto, CSS, JS, JSON o SVG en un URI data:<mime>;base64, seguro para UTF-8. Online.Free Cron Next Run CalculatorVe a qué hora exacta corre tu expresión cron de 5 campos la próxima vez. 100% gratis.Cron Next Run Calculator OnlineVe a qué hora exacta corre tu expresión cron de 5 campos la próxima vez. Online, sin instalar.Free JWT Decoder & Expiry CheckerDecodifica el header y payload de un JWT y verifica su claim exp contra la hora actual. Gratis.JWT Decoder & Expiry Checker OnlineDecodifica el header y payload de un JWT y verifica su claim exp contra la hora actual. Online.Free SQL FormatterReformatea SQL desordenado: keywords en UPPERCASE, cláusulas por línea, subqueries indentadas. Gratis.SQL Formatter OnlineReformatea SQL desordenado: keywords en UPPERCASE, cláusulas por línea, subqueries indentadas. Online.Free Unix Timestamp ConverterConvierte un timestamp Unix en fechas locales, ISO 8601 y UTC en un solo paso. 100% gratis.Unix Timestamp Converter OnlineConvierte un timestamp Unix en fechas locales, ISO 8601 y UTC en un solo paso. Online, gratis.Free UUID GeneratorGenerate UUID v4 and v7 in batches, with prefixes. 100% free — no sign-up, no limits, no watermark.UUID Generator OnlineGenerate UUID v4 and v7 in batches, with prefixes. Use it online — no install, works in any browser.JSON FormatterFormat or validate JSON with 1, 2, or 4-space or tab indentation.JSON ValidatorPaste JSON and get a five-check report: validity, root shape, duplicate keys, depth, and size.MD5 & SHA-256 Hash GeneratorCompute MD5 and SHA-256 digests of any text in your browser.Password GeneratorGenerate a reproducible password from a length, character set, and seed.Random Number GeneratorGenerate a reproducible set of random integers between any two bounds.Regex GeneratorGenerate ready-to-use regular expressions for email, phone, URL, dates, IPv4, ZIP, and semver.URL Encoder & DecoderEncode or decode text as percent-encoding, URL-unsafe form, or Base64.
Convertidores
6 herramientasID / Passport Photo MakerTurn any photo into a compliant ID or passport photo.Image ConverterConvert between JPG, PNG, WEBP, and HEIC.JSON to CSVConvert JSON arrays to CSV tables.XML to JSONConvert XML to clean, structured JSON.Markdown to PDFRender Markdown to a downloadable PDF.Texto a imagenConvierte texto plano en una imagen PNG lista para compartir, todo en tu navegador.