API Marketplace

Validate the world's securities identifiers and compute their check digits — entirely locally. The validate endpoint checks an ISIN (the 12-character International Securities Identification Number), a CUSIP (the 9-character North-American identifier) or a SEDOL (the 7-character UK/Ireland identifier), auto-detecting which one you passed, and verifies it with the correct algorithm for each: the Luhn-over-letter-expansion scheme for ISIN, the doubling mod-10 scheme for CUSIP and the weighted mod-10 scheme for SEDOL. It returns whether the identifier is valid, the parsed parts (for an ISIN, the two-letter country prefix and the nine-character national number) and the expected check digit so you can see exactly why something failed. The checkdigit endpoint computes the trailing check digit for an identifier body, so you can complete or generate a valid code. Everything runs locally and deterministically, so it is instant and private — no market-data lookups, no third-party calls. Ideal for fintech and trading systems, reference-data and securities-master pipelines, reconciliation, data validation and import tooling, and compliance checks. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This validates an identifier's structure and check digit; it does not look up the underlying security or its market data.

Tempo di attività

100.0%

Latenza

77ms

Abbonati

3,710

HTTP content negotiation as an API. The parse endpoint reads an Accept, Accept-Language, Accept-Encoding or Accept-Charset header — with quality (q) values and parameters — into a clean list ranked by the client's preference. The negotiate endpoint takes that header plus the list of values your server can actually serve and returns the single best match, along with the full ranked result and the entry that matched each candidate. It applies the correct rules for each kind: media-type type and subtype wildcards (text/*, */*), RFC 4647 language-range matching (a request for en matches your en-US, and en-US falls back to en), and exact matching with a * wildcard for encodings and charsets — and a q=0 entry correctly rejects a value. Everything runs locally and deterministically, so it is instant and private. Ideal for i18n middleware and locale selection, API versioning by media type, response-format and compression selection, CDNs, proxies and edge functions. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This negotiates HTTP headers; to validate or decompose a single BCP-47 language tag use a BCP-47 API.

Tempo di attività

100.0%

Latenza

81ms

Abbonati

4,718

Parse and build HTTP cookies. The parse endpoint reads a Set-Cookie header into its name, value and structured attributes — Domain, Path, Expires, Max-Age, Secure, HttpOnly, SameSite, Priority and Partitioned — or, with mode=cookie, splits a request Cookie header like "a=1; b=2; c=3" into an ordered list and a name→value map. The serialize endpoint builds a correct Set-Cookie string from simple fields, with sensible defaults (Path=/), proper date formatting for Expires, optional URL-encoding of the value, and validation of the cookie name, the date and the enum attributes — and it automatically adds Secure when SameSite=None, as browsers require. Everything is computed locally and deterministically, so it is instant and private. Ideal for web frameworks and middleware, API debugging and proxies, session and consent tooling, testing and security review. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This parses and builds cookie strings; it does not fetch a URL — to inspect a live site's response headers use a security-headers or HTTP API.

Tempo di attività

100.0%

Latenza

84ms

Abbonati

3,904

Generate valid schema.org JSON-LD structured data from simple fields — the markup Google and other search engines use for rich results. The generate endpoint builds ready-to-embed JSON-LD for the types that matter most for SEO: Article (and BlogPosting / NewsArticle) with author and publisher, Product with offers, price, availability and an aggregate rating, Organization and LocalBusiness with postal address and opening hours, Person, WebSite with a Sitelinks search box (SearchAction), BreadcrumbList, FAQPage, Event and Recipe with ingredients and step-by-step instructions. Pass plain fields — or JSON arrays and newline lists for breadcrumbs, FAQ questions, ingredients and social profiles — and get back a clean JSON-LD object, optionally wrapped in a ready-to-paste <script type="application/ld+json"> tag. The types endpoint documents every supported type and its fields. Everything is assembled locally and deterministically, so it is instant and private. Ideal for CMS and static-site pipelines, SEO tooling, e-commerce product pages, documentation and content platforms. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This GENERATES schema.org markup; to extract structured data or Open Graph tags from a page use an HTML-parsing API, and to audit on-page SEO use an SEO API.

Tempo di attività

100.0%

Latenza

80ms

Abbonati

3,004

Generate a modular (geometric) scale for typography and spacing. Pick a base size and a ratio — a named musical interval (minor-second, major-second, minor-third, major-third, perfect-fourth, augmented-fourth, perfect-fifth, minor-sixth, golden, major-sixth, minor-seventh, major-seventh, octave and more), a plain number like 1.25, or an interval written as 3:2 — and the scale endpoint returns a harmonious set of sizes stepping up and down from the base, where each value is base × ratio^step (step 0 is the base). Choose how many steps above and below, the rounding, and an optional unit suffix (px, rem, em) so the values come back ready to paste into CSS or design tokens. The ratios endpoint lists every named ratio with its decimal value. A modular scale gives type, spacing and layout a consistent rhythm instead of arbitrary pixel values. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This produces a numeric size scale; for colour scales and gradients use the Gradient API.

Tempo di attività

100.0%

Latenza

81ms

Abbonati

3,497

A 2D, 3D and n-dimensional vector maths toolkit. The op endpoint performs the operation you ask for on one or two vectors: add and subtract, scale by a factor, negate, the dot product, the cross product (a vector in 3D, the scalar z-component in 2D), the magnitude (length), the unit (normalized) vector, the Euclidean distance and the angle between two vectors (in both radians and degrees), linear interpolation (lerp) between two vectors, and the projection of one vector onto another. The info endpoint analyses a single vector — its dimension, magnitude, unit vector and, for 2D, its heading angle from the x-axis. Vectors are just comma-separated components like 3,4 or 1,2,3, and operations work in any dimension up to 32 (cross product is 2D/3D only). Everything is exact local maths, so it is instant and deterministic. Ideal for game and physics engines, graphics and WebGL/canvas, robotics and navigation, data-visualisation, simulations and engineering tools. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This does vector algebra; for plane-angle unit conversion use the Angle API and for shape area/perimeter use the Geometry API.

Tempo di attività

100.0%

Latenza

76ms

Abbonati

3,762

Evaluate animation easing and timing functions. The sample endpoint computes any of the 31 standard Penner easings — easeInOutCubic, easeOutBounce, easeInOutElastic, easeInBack, easeOutExpo, easeInOutSine and the rest — the four CSS keywords (ease, ease-in, ease-out, ease-in-out), or your own CSS cubic-bezier(x1,y1,x2,y2) timing function, solved exactly with Newton-Raphson. Ask for a single progress value t, or pass steps=N to get a ready-made table of {t, value} points for building keyframes, sprite timelines, scroll animations and interpolation lookup tables. The list endpoint returns every supported easing name with the cubic-bezier for the CSS keywords. Eased values may overshoot below 0 or above 1 for back, elastic and bounce, exactly as designers expect. Ideal for motion design, game and UI animation, CSS and canvas/WebGL tooling, charting and data-viz transitions, and anywhere you need a precise timing curve without pulling in a library. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This computes the curve values; to convert colours or build gradients use the colour and gradient APIs.

Tempo di attività

100.0%

Latenza

79ms

Abbonati

4,461

Strip, extract and count emoji in any text. The strip endpoint removes every emoji from a string — or replaces each one with a marker you choose — and gets multi-code-point emoji right: ZWJ sequences like the family 👩‍👩‍👧‍👦, skin-tone modifiers (👍🏽), country flags (🇩🇪), keycaps (1️⃣) and variation selectors all count as a single emoji, so nothing is left half-deleted. The extract endpoint lists every emoji it finds with its position in the text and returns per-emoji and unique counts, ideal for analytics and moderation. A bare ©, ® or ™ is deliberately left alone unless it carries an emoji variation selector, and plain digits are never touched. Perfect for cleaning user input before search indexing or storage, sanitising usernames and display names, moderation and analytics, and preparing text for systems that choke on emoji. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This cleans and extracts emoji from text; to look an emoji up by name or shortcode use an emoji database API, and to count graphemes use a text-segmentation API.

Tempo di attività

100.0%

Latenza

83ms

Abbonati

3,033

Extrai iniciais e monogramas de avatar a partir de um nome ou frase. O endpoint de iniciais retorna a primeira letra de cada palavra significativa — ignorando automaticamente partículas nobiliárias e de ligação em minúsculas (van, von, de, della, la, der, of, the…) de modo que "Ludwig van Beethoven" retorna LB e "Charles de Gaulle" retorna CG — com opções para um separador entre letras, forma pontuada (J.D.), maiúsculas ou caixa original, e um número máximo de iniciais. O endpoint de monograma retorna as iniciais curtas de um, dois ou três caracteres usadas para avatares e chips de interface, pegando a primeira e a última palavras significativas ("John Michael Doe" → JD) e recorrendo às letras iniciais de um único nome. Tudo é seguro para multibyte, então letras acentuadas e não latinas (José María → JMA) funcionam corretamente. Ideal para avatares padrão, chips de contato, crachás de iniciais, gráficos de monograma, cabeçalhos de documentos e mala direta. Computação local pura — sem chave, sem serviço de terceiros, instantâneo. Ao vivo, nada armazenado. 3 endpoints. Isso produz o texto das iniciais; para renderizá-las como uma imagem de avatar, use uma API de avatar.

Tempo di attività

100.0%

Latenza

83ms

Abbonati

4,760

Detect which case convention a string uses, and split identifiers into their constituent words. The detect endpoint classifies any value as camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, COBOL-CASE, Train-Case, dot.case, Title Case, Sentence case, lowercase or UPPERCASE — or mixed when it does not fit — and reports the separator it found and the words it is built from. The split endpoint tokenizes any identifier into words: it breaks camelCase humps, handles acronym boundaries correctly (HTTPServer → HTTP, Server; XMLHttpRequest → XML, Http, Request), and splits on digits and on underscores, dashes, dots and spaces, returning both the original-case tokens and lower-cased words ready to feed into a converter. Ideal for linters and code-mod tools, refactoring, API and schema validators, autocomplete and search, and any pipeline that needs to understand identifier naming. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This DETECTS and tokenizes a case convention; to CONVERT a string between case styles use a text-case API.

Tempo di attività

100.0%

Latenza

84ms

Abbonati

4,525

缩进、取消缩进并在纯文本中逐行将制表符转换为空格。缩进端点为每一行添加固定的缩进——一定数量的空格或制表符，或任何自定义前缀，如用于引用的"> "——并且可以选择性地缩进空行。取消缩进端点移除块中最长的公共前导空白（与Python textwrap.dedent相同），因此您可以展平过度缩进的代码片段，并准确获取被移除的前缀。制表符端点根据制表位在制表符和空格之间转换——将制表符展开为空格，或将连续的空格折叠回制表符，可指定制表符大小，仅处理前导空白或全文。它适用于任何文本，无需将其解析为代码，并保留CRLF换行符。纯本地计算——无需密钥，无需第三方服务，即时完成。实时处理，不存储任何内容。4个端点。它仅处理空白结构：要修剪或排序行，请使用行API；要重新换行长行，请使用自动换行API；要重新格式化实际源代码，请使用代码格式化API。

Tempo di attività

100.0%

Latenza

78ms

Abbonati

4,384

Pad e alinha strings a uma largura alvo. O endpoint pad adiciona um caractere de preenchimento ao início, fim ou ambos os lados de um valor até que ele atinja a largura solicitada — preencha um número com zeros (7 → 007), alinhe à direita uma coluna de preço, centralize um título ou construa um campo de largura fixa — com qualquer string de preenchimento (espaço, 0, traço, pontos) e um sinalizador opcional de truncamento para cortar valores que já são muito longos. O endpoint align pega uma lista inteira de linhas (ou texto separado por nova linha) e preenche cada linha até uma largura comum, para que as colunas se alinhem em tabelas de largura fixa, layouts ASCII, recibos, faturas e logs. A largura é contada em pontos de código Unicode, então emojis e letras acentuadas contam como um e nunca são divididos. Computação local pura — sem chave, sem serviço de terceiros, instantâneo. Ao vivo, nada armazenado. 3 endpoints. Isso preenche até uma largura; para quebrar texto longo em várias linhas, use uma API de quebra de palavras, e para converter entre estilos de maiúsculas/minúsculas, use uma API de caso de texto.

Tempo di attività

100.0%

Latenza

76ms

Abbonati

4,648

Mascara un valor para mostrarlo de forma segura. El endpoint de máscara mantiene visibles los primeros y/o últimos caracteres y reemplaza el resto con un carácter de máscara — así una tarjeta se convierte en ••••••••••••1111 y un token API en sk**********3456 — y puede mantener intactos los separadores (espacios y guiones) para que el valor conserve su forma. Un enmascarador de correo electrónico dedicado oculta la parte local (y opcionalmente el dominio) mientras mantiene la dirección reconocible, por ejemplo, j•••••••@example.com. Elige cuántos caracteres revelar y qué carácter de máscara usar. Perfecto para mostrar los últimos cuatro dígitos de una tarjeta, ocultar parcialmente correos electrónicos y números de teléfono, y enmascarar tokens y números de cuenta en interfaces de usuario, recibos y registros. Cálculo puramente local — sin clave, sin servicio de terceros, instantáneo. En vivo, nada almacenado. 3 endpoints. Esto enmascara un valor conocido para su visualización; para encontrar y redactar PII dentro de texto libre, usa una API de redacción.

Tempo di attività

100.0%

Latenza

80ms

Abbonati

4,931

Operate on text line by line. The transform endpoint sorts lines (natural / numeric-aware, ascending or descending, case-insensitive), removes duplicate lines, reverses their order, numbers them, trims whitespace and drops blank lines — and the operations chain in the order you list them, so trim → remove blanks → dedupe → sort happens in a single call. The count endpoint reports line statistics: total, blank, non-blank, unique and duplicate counts plus the longest, shortest and average line length. Perfect for cleaning up lists and logs, deduplicating, preparing data and tidying pasted text. Pure local computation — no key, no third-party service, instant; up to 500,000 characters via POST. Live, nothing stored. 3 endpoints. Distinct from word wrapping, sorting of JSON lists and CSV tooling.

Tempo di attività

100.0%

Latenza

80ms

Abbonati

3,275

Highlight search terms in text. The highlight endpoint wraps every match of one or more terms in a marker — defaulting to <mark>…</mark>, or any open/close strings you choose (** for Markdown, ANSI codes for the terminal, a CSS span, anything) — and returns the marked-up text and a match count. The snippets endpoint returns short excerpts of the surrounding context around each match, the way a search-results page shows where your query appears. Matching is case-insensitive by default with optional whole-word mode, and terms are matched literally (regex characters are safely escaped). Perfect for search results and in-page find, keyword spotting, log review and document previews. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from search, summarization and diff APIs.

Tempo di attività

100.0%

Latenza

81ms

Abbonati

3,674

Truncate text cleanly. Cut a string to a maximum number of characters — at the end, the start or the middle — breaking on word boundaries so words are never chopped in half, and adding an ellipsis (which counts toward the limit). Middle truncation keeps the start and end and elides the centre, ideal for long file paths and IDs. A words endpoint trims to a number of whole words instead. Everything is emoji- and Unicode-safe (it counts code points, not bytes), so multi-byte characters and emoji are never split. Perfect for previews and teasers, table cells and cards, meta descriptions, breadcrumbs and CLI output. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from word wrapping, case conversion and text statistics.

Tempo di attività

100.0%

Latenza

81ms

Abbonati

3,610

Detect and redact personally identifiable information (PII) in free text. It finds email addresses, phone numbers, credit-card numbers (Luhn-validated to cut false positives), IPv4 and IPv6 addresses, US Social Security numbers and IBANs, and masks each one — with a per-type label like [EMAIL], a fixed replacement string, or a single character repeated to the original length. A detect endpoint returns every match with its type and position without changing the text. Perfect for scrubbing logs and support transcripts, sanitising data before sharing or sending to a third party, and privacy and compliance pre-checks. Pure local computation — text never leaves the server, no key, no third party, instant; up to 200,000 characters via POST. Live, nothing stored. 3 endpoints. Regex-based and best-effort — review before relying on it for legal compliance. Distinct from sentiment, profanity and general text tooling.

Tempo di attività

100.0%

Latenza

76ms

Abbonati

4,334

Render tabular data as an HTML table, and parse an HTML table back into data. The render endpoint turns a JSON array (of objects, or of arrays) or CSV into a clean, semantic <table> with <thead>/<tbody>, an optional caption and CSS class — every cell HTML-escaped so it is safe to embed. The parse endpoint does the reverse: give it any HTML containing a table and get back the headers, the rows and a ready-to-use JSON array of objects, with entities decoded and tags stripped from each cell. Perfect for emails and reports, dashboards and admin screens, and scraping or migrating tabular content. Pure local computation — no key, no third-party service, instant; up to 2 MB via POST. Live, nothing stored. 3 endpoints. Distinct from Markdown/ASCII table rendering and from generic HTML extraction.

Tempo di attività

100.0%

Latenza

78ms

Abbonati

3,084

Convert a heading to proper headline (title) case the way editors do — not a naive capitalise-every-word. It capitalises the first and last words and all the major words, while keeping articles (a, an, the), coordinating conjunctions (and, but, or…) and prepositions lowercase, and always capitalises the word right after a colon. Choose AP style (lowercases short prepositions, capitalises longer ones) or Chicago style (lowercases prepositions of any length). Hyphenated compounds such as well-known and state-of-the-art are handled correctly. Perfect for article and blog titles, headings, SEO meta titles, product and section names, and CMS tooling. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from a plain title/sentence case converter, which capitalises every word.

Tempo di attività

100.0%

Latenza

85ms

Abbonati

3,484

Sortiere eine Liste — oder ein Array von Objekten nach einem seiner Schlüssel — so, wie du es wirklich möchtest. Die natürliche (alphanumerische) Sortierung setzt file2 vor file10 und v1.9 vor v1.10, wie Menschen es erwarten; alphabetische, numerische und nach Länge sortierende Ordnungen sind ebenfalls integriert, jeweils auf- oder absteigend, mit einem optionalen Groß-/Kleinschreibungs-unabhängigen Modus. Elemente können einfache Zeichenketten (durch Komma oder Zeilenumbruch getrennt) oder ein JSON-Array sein; bei Objekten gib die Eigenschaft an, nach der sortiert werden soll, und Zeilen, die diese vermissen, kommen zuletzt. Perfekt für Datei- und Versionslisten, Bestenlisten und Tabellen, zum Bereinigen von Benutzereingaben und jeder Benutzeroberfläche, die sortierte Daten anzeigt. Reine lokale Berechnung — kein Schlüssel, kein Drittanbieter-Dienst, sofort. Live, nichts wird gespeichert. 3 Endpunkte. Abgegrenzt von Mengenoperationen und CSV-Werkzeugen.

Tempo di attività

100.0%

Latenza

75ms

Abbonati

3,141

Treat lists as sets. Compute the union, intersection, difference or symmetric difference of two lists; deduplicate a single list; and compare two lists to learn whether one is a subset of the other, whether they are equal as sets, whether they are disjoint and how many items they share. Items can be plain strings (comma- or newline-separated) or arbitrary JSON values, and an optional case-insensitive mode treats differently-cased strings as equal. Order is preserved (first occurrence wins). Perfect for data wrangling and reconciliation, tag and permission maths, deduplication, A/B list comparison and ETL. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from CSV/JSON toolkits — this is pure set logic.

Tempo di attività

100.0%

Latenza

77ms

Abbonati

4,114

Measure typing speed and accuracy. Compute words-per-minute, characters-per-minute and accuracy from a character (or word) count and the elapsed time, optionally subtracting uncorrected errors for a net WPM; compare what was typed against a reference text to count per-character mistakes and score the attempt; and estimate how long a given amount of text will take at a target speed. Uses the standard typing convention that one word equals five characters. Perfect for typing tests and games, coding-speed tools, onboarding and skills assessments, and leaderboards. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. A focused typing calculator, distinct from general unit or percentage maths.

Tempo di attività

100.0%

Latenza

77ms

Abbonati

3,557

An integer toolkit as an API. Factorize any number into its prime factors with exponents (and a readable 2^3 × 3^2 × 5 form), with the divisor count, the divisor sum, the full list of divisors and whether the number is perfect; find the greatest common divisor and least common multiple of two numbers (and whether they are coprime); and test primality, returning the next and previous prime. Handles numbers up to a trillion. Perfect for maths education and puzzles, cryptography demos, generating test data and any time you need the building blocks of a number. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. A focused integer toolkit, distinct from a general math-expression engine.

Tempo di attività

100.0%

Latenza

74ms

Abbonati

4,587

Work with anagrams. The check endpoint tells you whether two strings are anagrams of each other — by default ignoring case, spaces and punctuation, so "Dormitory" and "Dirty Room" match. The signature endpoint returns the canonical sorted-letter key for a string; two strings are anagrams exactly when their signatures are equal, which makes the signature ideal for indexing and bucketing. The group endpoint takes a list of words and groups them into their anagram sets. Perfect for word games and puzzles, dictionaries and search, and de-duplicating reordered strings. No word list needed — it is pure letter analysis. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from spelling, similarity and dictionary APIs.

Tempo di attività

100.0%

Latenza

76ms

Abbonati

4,887