Text Analysis APIs let you add text analysis capabilities without building from scratch. Every entry below is profiled with trust signals — pricing model, authentication requirements, CORS support, rate limits, and live uptime checks — so you can compare options and pick production-safe choices instead of guessing from a link list.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| AI Translate text API The Text Translation API translates text into any of the 80 supported languages, providing accurate and context-aware translations | Freemium | API Key | No | Profile | |
| Analyse Keywords API This API lets you extract high-frequency keywords, key phrases and latent semantic keywords from any URL | Freemium | API Key | No | Profile | |
| Audexum API Text-to-speech REST API with 43 voices and 33 languages | Free | API Key | Yes | Profile | |
| Barcode API Generate Barcode images for a given barcode number. You can decode Barcode images and get the barcodes in a numberic form as well. Many industry standard barcode types are supported. The best and complete Barcode API on | Free | API Key | Yes | Profile | |
| CalorieNinjas API 2 Natural language nutrition API to extract nutrition data from any text. | Free | API Key | Yes | Profile | |
| Cloudmersive Natural Language Processing Natural language processing and text analysis | Freemium | API Key | No | Profile | |
| Cloudmersive ocrapi The powerful Optical Character Recognition (OCR) APIs let you convert scanned images of pages into recognized text. | Free | Unknown | Yes | Profile | |
| Code Detection API Detect, label, format and enrich the code in your app or in your data pipeline | Freemium | OAuth | No | Profile | |
| Convert Text to Speech API This API converts any text to speech automatically | Freemium | API Key | No | Profile | |
| DeepL API DeepL translation API delivering industry-leading neural machine translation quality across 30+ languages, with glossary and formality control. | Freemium | API Key | No | Profile | |
| Detect Language Detects text language | Freemium | API Key | No | Profile | |
| Detect Language API This API detects the language from any text (+ 50 languages supported) | Freemium | API Key | No | Profile | |
| Digitallinguistics DLx API The Digital Linguistics (DLx) REST API | Unknown | Unknown | Yes | Profile | |
| DynamicDocs API ADVICEment's [DynamicDocs API automates your document generation](https://advicement.io/dynamic-documents-api) and creates dynamic, optimized, interactive PDFs. Write your templates in LaTeX and call the API with JSON da | Free | Unknown | Yes | Profile | |
| ELI Natural Language Processing Tools for Thai Language | Freemium | API Key | No | Profile | |
| EasyPDFServer API API for converting HTML to PDF. | Unknown | Unknown | Yes | Profile | |
| Exude API Service API Exude API is an Open Source project, It is used for the primary ways for filtering the stopping, stemming words from the text data. This API is in a very basic level of development need to work on for later changes. | Unknown | Unknown | Yes | Profile | |
| FunTranslations API Funtranslations API gives access to the full set of translations available at funtranslations.com so that you can integrate them in your workflow or an app. [Click here to get details and subscribe](http://funtranslation | Free | Unknown | Yes | Profile | |
| FunTranslations Braille API Braille conversion API on the cloud. Translate from English text to Braille and get Braille results suitable for many display types.[Click here to subscribe](http://funtranslations.com/api/braille) | Free | API Key | Yes | Profile | |
| Fuzzy Text Search API The Fuzzy Text Search API finds close matches for user queries, handling typos and partial inputs to deliver relevant results quickly and accurately | Freemium | API Key | No | Profile | |
| GeoScore API Score content for AI search citation readiness with a 0-100 GEO score and 8 structural metrics | Free | API Key | Yes | Profile | |
| Google Cloud Natural Natural language understanding technology, including sentiment, entity and syntax analysis | Freemium | API Key | No | Profile | |
| Handwrytten API This is the Handwrytten API for sending cards written in the handwriting of your choice. Using this api, you can send cards to users. You can also customize cards with logos, which can be saved and then used like any oth | Paid | Unknown | Yes | Profile | |
| Hirak OCR API Image to text -text recognition- from image more than 100 language, accurate, unlimited requests | Unknown | API Key | Unknown | Profile | |
| Hirak Translation API Translate between 21 of most used languages, accurate, unlimited requests | Unknown | API Key | Unknown | Profile | |
| Language Identification (Prediction) API Automatic language detection for any texts. Supports over 150 languages. | Free | API Key | Yes | Profile | |
| LanguageTool Style and Grammar Checker for 25+ Languages | Freemium | No | No | Profile | |
| LanguageTool API LanguageTool API for grammar and style checking in 30+ languages, usable via public endpoint or self-hosted premium server. | Freemium | API Key | Yes | Profile | |
| Lecto Translation Translation API with free tier and reasonable prices | Freemium | API Key | No | Profile | |
| LibreTranslate Translation tool with 17 available languages | Free | No | No | Profile | |
| MotaWord API Use MotaWord API to post and track your translation projects. | Free | API Key | Yes | Profile | |
| Oxford Dictionaries API Oxford Dictionaries API public API. | Paid | Unknown | Yes | Profile | |
| Pirates API Ahoy matey! We help the landlubbers to get to know about the seamen way! You can generate pirate names, get some real pirate insults and pirate filler text. Oh you can translate to pirate lingo as well. [Click here to su | Free | API Key | Yes | Profile | |
| Poemist API Poemist API public API. | Unknown | Unknown | Yes | Profile | |
| Proofread and Grammar Check API The Proofreading and Grammar Check API ensures the provided text is grammatically correct and polished by automatically proofreading and checking for errors | Freemium | API Key | No | Profile | |
| Random Lovecraft API Random sentences from the complete works of H.P. Lovecraft. CORS-enabled. | Unknown | Unknown | Yes | Profile | |
| Safe text Clean short and long texts. It is probably world most complete text-cleaner API! Providing very fast and accurate results. | Freemium | API Key | No | Profile | |
| SelectPdf HTML To PDF API SelectPdf HTML To PDF Online REST API is a professional solution that lets you create PDF from web pages and raw HTML code in your applications. The API is easy to use and the integration takes only a few lines of code. | Free | API Key | Yes | Profile | |
| Semantria Text Analytics with sentiment analysis, categorization & named entity extraction | Paid | OAuth | No | Profile | |
| Semantria Text Analytics Text analytics API for sentiment analysis, entity extraction, and topic categorization. | Free | No | Yes | Profile | |
| Shakespeare API Shakespeare API. Generate random Shakespeare quotes, names, insults, lorem ipsum etc. Translate normal English to Shakespeare English. [Click here to subscribe](http://fungenerators.com/api/shakespeare/) | Free | API Key | Yes | Profile | |
| TAGGUN Receipt OCR Scanning API Expects only running software, real reactions, and beautifully crafted APIs to serve your every desire to transcribe a piece of paper to digital form. | Free | API Key | Yes | Profile | |
| Tafqit Herokuapp Tafqit API Convert numbers to their Arabic text representation | Paid | Unknown | Yes | Profile | |
| Tisane Text Analytics with focus on detection of abusive content and law enforcement applications | Freemium | OAuth | No | Profile | |
| Watson Natural Language Understanding Natural language processing for advanced text analysis | Paid | OAuth | No | Profile | |
| apilayer languagelayer API Language Detection JSON API supporting 173 languages | Free | Unknown | Unknown | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.