๐Ÿ“„ Free  ยท  No Signup  ยท  Sentence-Level Detection

Plagiarism Checker API

Detect plagiarism instantly with a single POST request. Get plagiarism %, unique %, and matched sources per sentence. No API key required. No rate limits.

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Free
No Cost Ever
~3s
Per Sentence Check
1000
Max Words/Request
Live
Web Source Match
โ„น๏ธAPI Information
๐Ÿ‘จโ€๐Ÿ’ป
Developer
Salman
๐Ÿท๏ธ
Version
v1.0
โšก
Method
POST
๐Ÿ“ฆ
Output
JSON with sources
๐Ÿ”—Endpoint
POST https://plagiarismchecker.freeapihub.workers.dev/check
text required
The text to check for plagiarism. Max 1000 words.
๐Ÿ’ปExample Request
# cURL
curl -X POST https://plagiarismchecker.freeapihub.workers.dev/check
  -H "Content-Type: application/json"
  -d '{"text": "Machine learning is a method of data analysis."}'

# JavaScript
const res = await fetch("https://plagiarismchecker.freeapihub.workers.dev/check", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ text: "Your text here..." })
});
const data = await res.json();
๐Ÿ“คResponse
// Success Response
{
  "status": "success",
  "plagiarism_percent": 50,
  "unique_percent": 50,
  "label": "Partially Plagiarized",
  "total_words": 120,
  "total_sentences": 4,
  "sentences": [
    { "text": "Machine learning...", "is_plagiarized": true, "sources": [{...}] },
    { "text": "Original sentence.", "is_plagiarized": false, "sources": [] }
  ]
}

// Error Response
{ "status": "error", "message": "text field is required" }