API Marketplace

Summarize text and pull out its keywords — no AI key, no external model. The summarize endpoint is extractive: it scores every sentence by word frequency and position and returns the most representative ones (ask for a fixed number of sentences or a fraction of the original), keeping the author's exact wording and order. The keywords endpoint ranks the most salient terms with their counts and a relative score, filtering out stopwords. Because it is deterministic and runs locally, the same text always gives the same result, instantly and privately. Perfect for article previews and TL;DRs, search snippets, tagging and content triage, and feeding shorter context to downstream tools. Pure local computation — no third-party service; send long text via POST. Live, nothing stored. 3 endpoints. Distinct from sentiment/NLP analysis, stopword lists and Unicode text segmentation.

Tempo di attività

100.0%

Latenza

79ms

Abbonati

4,691

Spreadsheet cell-reference maths for Excel, Google Sheets, LibreOffice and CSV tooling. Parse an A1 reference (AA10) into its column letter, 1-based column number, row and R1C1 form; build an A1 (and R1C1) reference from a row and a column given either as a letter or a number; and convert a column letter to its number and back (A→1, Z→26, AA→27, ZZ→702). Absolute markers ($A$1) are accepted. Perfect for code that generates spreadsheets, maps data to cells, builds formulas, or imports and exports ranges. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from CSV parsing and from generic number-base conversion.

Tempo di attività

100.0%

Latenza

75ms

Abbonati

4,863

Converti tra file di configurazione INI e JSON, in entrambe le direzioni. L'endpoint parse legge testo INI — sezioni ([section]), sezioni annidate ([database.replica]), coppie chiave=valore, commenti e chiavi ripetute (array) — in un oggetto JSON pulito; l'endpoint stringify trasforma un oggetto JSON in un file INI correttamente formattato. INI è il formato di configurazione utilizzato da Git (.gitconfig), PHP (php.ini), unità systemd, voci desktop, tox/setup.cfg, molti strumenti CLI e software Windows. Perfetto per modificare la configurazione a livello di programmazione, migrare impostazioni tra formati e leggere configurazioni in ambienti che supportano solo JSON. Calcolo puramente locale — nessuna chiave, nessun servizio di terze parti, istantaneo; invia file grandi tramite POST. Live, nulla viene memorizzato. 3 endpoint. Completa i convertitori YAML, TOML, CSV e XML ed è distinto da ciascuno.

Tempo di attività

100.0%

Latenza

76ms

Abbonati

3,692

Aspect-ratio and resize maths on plain dimensions — no image upload needed. The ratio endpoint reduces a width×height to its simplest integer ratio (1920×1080 → 16:9), its decimal value and a common name. The resize endpoint scales a dimension while preserving the ratio: give a new width or a new height and get the other side. The fit endpoint fits a source size into a target box using contain (letterbox) or cover (crop), returning the resulting size, the scale factor and the centering offset. Perfect for responsive layouts and CSS aspect-ratio, video and thumbnail framing, image-grid planning and print sizing. Pure local computation — it works on numbers only and never touches image files. Live, nothing stored. 4 endpoints. Distinct from image processing/resizing (which operates on actual files) and from geometry of shapes.

Tempo di attività

100.0%

Latenza

73ms

Abbonati

4,198

Convert SMPTE timecode for video, film and broadcast. Turn a timecode (HH:MM:SS:FF) into an absolute frame number or into real-time seconds, and turn a frame count back into a timecode — at 23.976, 24, 25, 29.97, 30, 50, 59.94 or 60 fps. Crucially it handles drop-frame correctly: at 29.97 and 59.94 fps it drops the right frame numbers each minute (notated with a semicolon, 01:00:00;00) so an hour of timecode lines up with an hour of real time, and it computes real seconds with the exact fractional rate (30000/1001). Perfect for NLE and editing tools, subtitle and caption timing, playout and broadcast automation, and media asset management. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from date/time, duration and relative-time tools.

Tempo di attività

100.0%

Latenza

77ms

Abbonati

4,486

Humanize, parse and convert byte sizes. Turn a raw byte count into a human-readable string (1610612736 → 1.5 GiB or 1.61 GB), parse a human size back into bytes ("1.5 GiB", "2GB", "500 kB" → the exact integer), and convert an amount between any two units. Handles both the IEC binary units (KiB, MiB, GiB, TiB — powers of 1024) and the SI decimal units (kB, MB, GB, TB — powers of 1000), with configurable decimal places and case-insensitive unit names. Perfect for dashboards and admin UIs, file-upload limits, storage and bandwidth reporting, logs and CLI output. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from file-type detection and from number/unit measurement conversion.

Tempo di attività

100.0%

Latenza

78ms

Abbonati

3,380

Read and write the front-matter metadata block at the top of Markdown and content files — the --- ... --- header used by Jekyll, Hugo, Astro, Eleventy, Gatsby, Next.js MDX and Obsidian. The parse endpoint splits a document into its structured front-matter data (title, tags, date, draft flags and anything else, as proper JSON), the body content and an optional excerpt, and tells you whether front matter was present. The stringify endpoint does the reverse: give it a JSON object of fields and a body, and it returns a clean Markdown file with a YAML front-matter block. Front matter is read as YAML (which also accepts JSON). Perfect for static-site build steps, headless-CMS imports, content migrations and validating posts. Pure local computation — no key, no third-party service, instant; send large documents via POST. Live, nothing stored. 3 endpoints. Distinct from Markdown rendering / table-of-contents extraction and from YAML/TOML format conversion.

Tempo di attività

100.0%

Latenza

76ms

Abbonati

4,783

Convert geometry between WKT (Well-Known Text) and GeoJSON, in both directions. WKT is the textual geometry format used by PostGIS, Spatialite, GEOS, JTS, Shapely and the OGC Simple Features standard (POINT (30 10), LINESTRING (...), POLYGON ((...))); GeoJSON is what web maps and JavaScript expect. The to-geojson endpoint turns a WKT string into a GeoJSON geometry, and to-wkt does the reverse from a GeoJSON geometry or Feature. Supports Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon and GeometryCollection. Perfect for bridging a spatial database and a front-end map, importing and exporting geometry, and data-migration scripts. Pure local computation — no key, no third-party service, instant; send large geometries via POST. Live, nothing stored. 3 endpoints. Distinct from coordinate-format conversion, EPSG/CRS lookups, slippy map tiles and GeoJSON geospatial metrics.

Tempo di attività

100.0%

Latenza

82ms

Abbonati

3,663

Clean up and parse personal names. The case endpoint applies proper name-casing that ordinary title-casing gets wrong — McDonald, MacLeod, O'Brien, D'Angelo, hyphenated double-barrelled names, lower-case particles (van, von, de, la, der) and Roman-numeral suffixes (II, III, IV). The parse endpoint splits a full name into salutation, first, middle and last name and suffix, and also returns a properly-cased version of each part. Perfect for tidying user sign-ups, CRM and mailing lists, deduplicating contacts, formatting names on documents and normalising imported data. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Parsing is tuned for Western (given-name-first) order. Distinct from baby-name popularity data and locale display-name lookups.

Tempo di attività

100.0%

Latenza

79ms

Abbonati

4,104

Reduce y limpia archivos SVG automáticamente con SVGO, el optimizador SVG estándar de la industria. El endpoint optimize elimina comentarios, metadatos, basura de editores y atributos redundantes, colapsa y fusiona rutas, y devuelve el marcado minimizado junto con los tamaños de bytes original y optimizado y el porcentaje ahorrado — típicamente 30-60% más pequeño. El endpoint data-uri va un paso más allá y devuelve una URI de datos CSS lista para pegar (codificada en URL o base64) más la regla background-image correspondiente, para que puedas incrustar iconos sin una solicitud HTTP adicional. Perfecto para pipelines de compilación, sistemas de iconos, herramientas de diseño, correo electrónico e incrustación de SVG en CSS. Procesamiento local puro — sin clave, sin servicio de terceros, instantáneo; envía marcado vía POST para archivos grandes (hasta 2 MB). En vivo, nada almacenado. 3 endpoints. Distinto de compresión de imágenes raster, generación de códigos QR/códigos y formato JSON/HTML.

Tempo di attività

100.0%

Latenza

90ms

Abbonati

3,888

Mida la geometría GeoJSON en la superficie de la tierra. Calcule el área real de un polígono o multipolígono (en metros cuadrados, kilómetros cuadrados, hectáreas, acres y millas cuadradas), encuentre el centroide de cualquier GeoJSON, obtenga el cuadro delimitador (oeste/sur/este/norte) y su centro, mida la longitud de una LineString o MultiLineString (en kilómetros, metros, millas y millas náuticas), y pruebe si un punto de latitud/longitud cae dentro de un polígono. Acepta geometrías, Features y FeatureCollections; las coordenadas siguen el orden [longitud, latitud] de GeoJSON. Perfecto para aplicaciones de mapas, geocercas, análisis de territorio y cuencas, distancias de rutas y paneles espaciales. Cálculo local puro — sin clave, sin servicio de terceros, instantáneo. En vivo, nada almacenado. 6 endpoints. Distinto de la geometría de forma abstracta, conversión de formato de coordenadas, mosaicos de mapas móviles y datos de límites administrativos.

Tempo di attività

100.0%

Latenza

78ms

Abbonati

4,554

Generate colour gradients and colour scales programmatically. Produce an evenly-spaced scale of N colours between two or more stops (interpolated in a perceptually smooth colour space — lab, lch, oklab, oklch — or plain rgb/hsl), get a single interpolated colour at any position between two colours, and build a ready-to-paste CSS gradient string (linear with any angle, or radial) from a list of stops. Colours accept hex (#f00, #ff0000) or CSS names (red, steelblue). Perfect for data-visualisation colour ramps, heatmaps, chart palettes, theme generation and UI backgrounds. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from colour conversion / harmonious palettes (one base colour) and image palette extraction.

Tempo di attività

100.0%

Latenza

80ms

Abbonati

4,550

Ejecuta estadísticas en una lista de números sin necesidad de una hoja de cálculo o un paquete estadístico. El endpoint describe devuelve un resumen completo de un conjunto de datos: recuento, suma, mínimo, máximo, rango, media, mediana, moda, primer y tercer cuartil y rango intercuartílico, varianza y desviación estándar poblacional y muestral, coeficiente de variación, medias geométrica y armónica, asimetría y curtosis. Obtén cualquier percentil de un conjunto de datos, el coeficiente de correlación de Pearson (y r²) entre dos series de igual longitud, y una regresión lineal simple (pendiente, intersección, r² y la ecuación de la recta). La entrada es un arreglo de números en bruto (JSON o una lista separada por comas) — sin CSV, sin encabezados. Perfecto para análisis, resúmenes de pruebas A/B, datos de sensores y métricas, paneles de control y análisis exploratorio rápido. Cálculo puramente local — sin clave, sin servicio de terceros, instantáneo. En vivo, nada se almacena. 5 endpoints. Distinto del motor de expresiones mathjs y de los resúmenes por columna de CSV.

Tempo di attività

100.0%

Latenza

73ms

Abbonati

3,025

The maths behind every web map. Convert between latitude/longitude, slippy-map XYZ tile coordinates (the z/x/y scheme used by OpenStreetMap, Google Maps, Mapbox and Leaflet) and Bing/Azure quadkeys, and get the exact Web Mercator (EPSG:3857) bounding box and centre of any tile. Find which tile contains a point at a given zoom, expand a tile to its geographic bounds, translate a quadkey to z/x/y and back, and list a tile's eight neighbours (with correct antimeridian wrap-around and pole clamping). Perfect for tile servers and caches, pre-fetching map tiles, drawing tile grids and debugging map layers. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 5 endpoints. Distinct from coordinate-format conversion (Plus Code/MGRS/UTM), geohash and the encoded-polyline codec.

Tempo di attività

100.0%

Latenza

81ms

Abbonati

3,626

Work with ISO-8601 durations — the PnYnMnDTnHnMnS strings (P3Y6M4DT12H30M5S, PT1H30M) used across calendars, scheduling, video metadata, billing periods and APIs. Parse a duration into its components and a total in seconds and milliseconds; format a number of seconds (or individual year/month/week/day/hour/minute/second fields) back into a canonical ISO-8601 string; humanise any duration into readable text ("1 hour and 30 minutes"); and measure the exact duration between two instants (ISO timestamps or unix epochs) as both an ISO-8601 string and a precise second count. Years and months use documented calendar averages and are clearly flagged as approximate. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 5 endpoints. Distinct from date/time parsing and relative-time ("3 hours ago") formatting.

Tempo di attività

100.0%

Latenza

77ms

Abbonati

4,689

Encode and decode Google/Mapbox encoded polylines — the compact ASCII string used by the Google Maps Directions API, Mapbox, Valhalla, OSRM and GPX-style route geometry to pack a list of coordinates into a few bytes. Decode an encoded string into an array of latitude/longitude points, encode a coordinate list back into a polyline (precision 5, the Google default, or 6 for OSRM/Valhalla overview), and measure a path — point count, total length by the haversine great-circle formula in km and miles, and the bounding box. Perfect for drawing routes on a map, storing tracks compactly, computing trip distance and fitting a map viewport. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from coordinate-format conversion (Plus Code/MGRS/UTM) and geohash.

Tempo di attività

100.0%

Latenza

72ms

Abbonati

4,297

Reduzca palabras a su raíz lingüística (stem) con los algoritmos clásicos de stemming Snowball — running → run, fishing → fish, nationalization → nation — en 24 idiomas, incluyendo inglés, alemán, francés, español, italiano, portugués, neerlandés, ruso, árabe, finlandés, sueco y más. Realice el stemming de un texto completo (cada palabra, devolviendo tanto el mapeo palabra por palabra como el texto completamente procesado) o de una sola palabra. El stemming es el paso de normalización central detrás de los motores de búsqueda, la expansión de consultas, la indexación de texto, la coincidencia de palabras clave y el preprocesamiento de PNL. Cálculo local puro — sin clave, sin servicio de terceros, instantáneo. En vivo, nada almacenado. 4 endpoints. Distinto del análisis de sentimiento/PNL y la coincidencia difusa de cadenas.

Tempo di attività

100.0%

Latenza

78ms

Abbonati

3,255

Genera y analiza solicitudes de firma de certificados X.509 (PKCS#10) — las CSR que envías a una Autoridad de Certificación para obtener un certificado TLS. Genera una CSR a partir de un nombre común más organización opcional, país, localidad y Nombres Alternativos del Sujeto, y obtén la CSR junto con una clave privada RSA recién generada (2048/3072/4096). O analiza una CSR existente para leer su sujeto, SANs, tamaño de clave y si su firma es válida. Procesamiento local puro — sin clave, sin servicio de terceros. Nota: para desarrollo y pruebas; mantén las claves privadas de producción fuera de línea. En vivo, nada almacenado. 3 endpoints. Distinto de la generación de pares de claves, decodificación de certificados y comprobaciones SSL en vivo.

Tempo di attività

100.0%

Latenza

195ms

Abbonati

4,339

Decode an X.509 certificate (PEM) into readable details — without a live connection. Paste a certificate and get back its subject and issuer (parsed into fields), the validity window with days-until-expiry and an expired flag, the serial number, SHA-1 and SHA-256 fingerprints, the Subject Alternative Names, the public-key type and size, and the CA / self-signed flags. Pure local parsing with no third-party service. Live, nothing stored. 2 endpoints. Built for certificate inspection, CI/CD expiry checks, PKI debugging and audit tooling. Distinct from a live SSL/TLS endpoint checker — this decodes a certificate you already hold.

Tempo di attività

100.0%

Latenza

83ms

Abbonati

3,550

Generate cryptographic key pairs on demand — RSA (2048/3072/4096), elliptic-curve (P-256, P-384, P-521, secp256k1), Ed25519 and Ed448 — returned as PEM (SPKI public key, PKCS#8 private key) and, optionally, as JWK. Perfect for spinning up JWT/JWS signing keys, TLS and SSH experiments, test fixtures and demos. Pure local generation with Node's crypto (no third-party service). Note: for development, testing and education — generate keys for production systems offline or in an HSM, never trust a remote API with real private keys. Live, nothing stored. 3 endpoints. Distinct from JWT signing, password generation and hashing.

Tempo di attività

100.0%

Latenza

79ms

Abbonati

3,492

Valide endereços de carteiras de criptomoedas antes de enviar fundos ou armazená-los. Verifique um endereço em relação a uma moeda específica — Bitcoin (base58check legado e bech32 SegWit), Ethereum (com checksum EIP-55), Litecoin, Dogecoin, Bitcoin Cash, XRP, Cardano, Tron, Monero e mais de 100 outras — ou deixe-o detectar automaticamente a moeda provável entre as moedas mais populares. Opcionalmente, restrinja a mainnet ou testnet. Detecta erros de digitação, erros de rede errada e endereços malformados. Validação local pura — sem chave, sem serviço de terceiros, instantânea. Ao vivo, nada armazenado. 3 endpoints. Construído para formulários de pagamento e checkout, exchanges e carteiras, validação de retirada e pré-verificações KYT. Distinto de APIs de dados de blockchain e preços de mercado.

Tempo di attività

100.0%

Latenza

81ms

Abbonati

4,738

Trabaja con frases semilla mnemónicas BIP39: las frases de recuperación de 12 a 24 palabras utilizadas por billeteras cripto. Genera una frase con una fortaleza elegida (128–256 bits) en cualquiera de los 9 idiomas de listas de palabras, valida una frase, convierte entre una frase y su entropía bruta en ambas direcciones, y deriva la semilla BIP39 de 512 bits (con una frase de contraseña opcional) utilizada para la derivación de claves de billetera HD. Cómputo local puro — sin clave, sin servicio de terceros. Nota: destinado para desarrollo, pruebas y educación; genera semillas para fondos reales sin conexión / del lado del cliente, nunca confíes en una API remota con claves de producción. En vivo, nada se almacena. 7 endpoints. Distinto de herramientas de datos de mercado, contraseñas y 2FA.

Tempo di attività

100.0%

Latenza

75ms

Abbonati

4,450

Achate e desachate JSON. Transforme um objeto JSON profundamente aninhado em um mapa de nível único com chaves em notação de ponto (a.b.c → valor, arrays tornam-se a.0, a.1) e transforme um mapa de notação de ponto plano de volta para a estrutura aninhada original. Escolha o delimitador (ponto, barra, qualquer coisa), limite a profundidade ou mantenha arrays intactos. Perfeito para variáveis de ambiente, chaves de tradução i18n, preparar JSON para exportação CSV ou planilha, propriedades de eventos de análise, diff de configuração e serialização de formulários. Processamento local puro — sem chave, sem serviço de terceiros, instantâneo. Ao vivo. 3 endpoints. Distinto de validação/formatação JSON, consulta JSONPath e inferência de tipo.

Tempo di attività

100.0%

Latenza

89ms

Abbonati

3,973

Torne HTML não confiável seguro para exibição. Envie qualquer HTML — um comentário, uma submissão de rich-text, um trecho de e-mail ou uma página raspada — e receba de volta uma versão limpa e livre de XSS: tags <script>, manipuladores de eventos inline (onclick, onerror), URLs javascript:, <iframe>, <style> e qualquer coisa que não esteja na lista de permissões são removidos. Substitua as tags e atributos permitidos para atender às suas necessidades, ou remova links completamente. Um endpoint strip retorna texto simples com toda a marcação removida. Sanitização local pura — sem chave, sem serviço de terceiros, instantâneo. Ao vivo. 3 endpoints. Construído para conteúdo gerado pelo usuário, sistemas de comentários, editores rich-text, renderização de e-mail e qualquer lugar onde HTML não confiável chegue a um navegador. Distinto de um renderizador Markdown ou de um extrator de dados HTML.

Tempo di attività

100.0%

Latenza

80ms

Abbonati

4,907