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Utilerio
All endpoints

Text Diff Checker

POST/api/v1/diff

Compare two texts side-by-side and highlight additions, deletions and changes.

Authentication

Requires an API key in the X-API-Key header.

Try it

POST/api/v1/diff

Parameters

beforestringrequired

Original text.

afterstringrequired

Modified text.

contextintegeroptional

Context lines around changes. Default 3.

Request body

{
  "before": "line one",
  "after": "line two"
}

Response codes

  • 200Success.
  • 400Invalid request — check your body or parameters.
  • 401Missing or invalid API key.
  • 403The API key is not scoped to this endpoint.
  • 429Rate limit exceeded — retry after a short wait.

Language

cURL

Request

curl -X POST https://utilerio.com/api/v1/diff \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"before":"line one","after":"line two"}'

Response

{ "unified": "…", "stats": { "added": 1, "removed": 1 } }