📝
🔍
🌐
✂️
📊
Open API — 9+ Endpoints

The complete Text Analysis API toolkit

Nine text-intelligence endpoints — readability scoring, PII masking, text similarity, profanity detection, word frequency, extractive summarisation, language detection, text diff, and transliteration — all in one simple REST API.

curl -X POST "https://textanalysis.toolkitapi.io/v1/text/readability" \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text": "The quick brown fox jumps over the lazy dog. A simple sentence for testing."}'
import httpx

resp = httpx.post(
    "https://textanalysis.toolkitapi.io/v1/text/readability",
    headers={"X-API-Key": "YOUR_KEY"},
    json={"text": "The quick brown fox jumps over the lazy dog."},
)
result = resp.json()
print(result["scores"]["flesch_reading_ease"], result["interpretation"]["level"])
const resp = await fetch(
  "https://textanalysis.toolkitapi.io/v1/text/readability",
  {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "X-API-Key": "YOUR_KEY",
    },
    body: JSON.stringify({
      text: "The quick brown fox jumps over the lazy dog.",
    }),
  }
);
const data = await resp.json();
console.log(data.scores.flesch_reading_ease, data.interpretation.level);
5 Readability Indices | PII Masking | Free Tier Available | 50+ Languages

Browse by Category

Nine text-intelligence endpoints across four capability areas.

Built for Developers

Designed to simplify your text-processing pipeline, not complicate it.

📖

Readability Scoring

Five industry-standard readability indices — Flesch, Kincaid, Gunning Fog, Coleman-Liau, and ARI — in a single call.

🔒

PII & Data Masking

Detect and redact emails, phone numbers, SSNs, credit cards, and IPs before storing or forwarding user content.

🔀

Text Similarity

Compare two texts with Levenshtein, cosine, or Jaccard — get a normalised 0–1 score regardless of length.

🌐

Language Detection

Identify the language of any text with a confidence score across 50+ languages using n-gram frequency analysis.

✂️

Extractive Summarisation

Condense long documents to their key sentences using TF-IDF scoring — deterministic, fast, and hallucination-free.

↔️

Text Diff

Get a structured diff of two texts at word or line granularity — ready to render in any review UI.

9
API Endpoints
4
Categories
50+
Languages Detected
5
Readability Indices

Start analysing text in minutes

One API key. 9 endpoints. Readability, PII masking, similarity & language detection.

Get Free API Key →