#text

Stopword lists and removal for 58 languages. Fetch the full stopword list for a language, see all supported languages with their word counts, check whether a single word is a stopword, or strip stopwords out of a block of text to get a clean keyword stream. Built on the open stopwords-iso dataset and served entirely in-memory, so responses are instant and the service is always available. Ideal for search indexing and relevance, NLP preprocessing and text mining, keyword extraction, tag generation and content tooling.

api.oanor.com/stopwords-api

A complete emoji database in one fast API. Search roughly 1,870 emojis by name, keyword, alias or tag, look up a single emoji by its alias (like rocket or :fire:) or by the emoji character itself, browse any of the nine Unicode categories, or get random emojis (optionally from a category). Every emoji comes with its name, category, aliases, search tags, Unicode code points and the version it was introduced in. Built on the open GitHub gemoji dataset and served entirely in-memory, so responses are instant and the service is always available. Ideal for chat and messaging apps, emoji pickers and search, social and content tools, games and fun widgets.

api.oanor.com/emoji-api

Run regular expressions server-side without the ReDoS risk. Test whether a pattern matches, extract all matches with their positions and capture groups (numbered and named), replace with a substitution pattern, or split text — all with the familiar JavaScript regex flags (g, i, m, s, u, y). Every evaluation runs in an isolated sandbox with a hard timeout, so a catastrophic-backtracking pattern can never hang your service; you get a clear timeout error instead. Inputs accept GET query parameters or a JSON POST body. Pure local compute with no third-party upstream, so responses are instant and the service is always available. Ideal for no-code and automation platforms, data-cleaning pipelines, form and input validation, log parsing and content tooling.

api.oanor.com/regex-api

Compare two pieces of text and get a precise, structured diff. Choose line, word or character granularity for a full edit script (equal, inserted, deleted) with addition and deletion counts, get a compact inline word diff, or render a standard unified diff (patch) with configurable context lines and file labels — ready to feed into patch tooling or a code-review UI. Built on a Longest-Common-Subsequence algorithm for accurate, minimal diffs. Every endpoint works by GET or JSON POST and runs entirely server-side with no third-party upstream, so responses are instant and the service is always available. Ideal for code review and version tooling, CMS and document editors, change tracking, plagiarism highlighting and content audits.

api.oanor.com/textdiff-api

A fast, fully-local text-utilities toolkit: convert between 10 case styles (upper, lower, title, sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case), generate URL-friendly slugs, compute text statistics (word, character, sentence, line and paragraph counts, average word length and reading time), and produce lorem-ipsum placeholder text by words, sentences or paragraphs. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for CMS, editors, developer tools, forms and content pipelines.

api.oanor.com/text-api

Fetch full song lyrics by artist and title, and search across millions of songs to find the right track. Returns the lyrics as text and as an array of lines, ready to display or process.

api.oanor.com/lyrics-api