Text Diff
Get a structured word-level or line-level diff between two texts
/v1/text/diff
curl -X POST "https://textanalysis.toolkitapi.io/v1/text/diff" \
-H "X-API-Key: YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"original": "The cat sat on the mat.", "revised": "The cat sat on the rug.", "mode": "word"}'
import httpx
resp = httpx.post(
"https://textanalysis.toolkitapi.io/v1/text/diff",
json={"original": "The cat sat on the mat.", "revised": "The cat sat on the rug.", "mode": "word"},
)
print(resp.json())const resp = await fetch("https://textanalysis.toolkitapi.io/v1/text/diff", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({"original": "The cat sat on the mat.", "revised": "The cat sat on the rug.", "mode": "word"}),
});
const data = await resp.json();
console.log(data);# See curl example{
"mode": "word",
"diff": [
{"type": "equal", "text": "The cat sat on the "},
{"type": "delete", "text": "mat"},
{"type": "insert", "text": "rug"},
{"type": "equal", "text": "."}
],
"insertions": 1,
"deletions": 1
}Try It Live
Description
How to Use
1. Send a POST request to `/v1/text/diff` with `original` and `revised` as the two texts. 2. Set `mode` to `word` (default) or `line`. 3. Iterate over the `diff` array; render `delete` segments in red and `insert` segments in green. 4. Use `insertions` and `deletions` counts for summary statistics.
About This Tool
The Text Diff endpoint compares two texts and returns a structured list of changes — additions, deletions, and unchanged sections — at word or line granularity.
Each segment in the response has a `type` field (`equal`, `insert`, `delete`) and the corresponding `text`, making it trivial to render coloured diffs in any UI framework.
Why Use This Tool
- Document version control — Show what changed between two versions of a document
- Contract comparison — Highlight clause changes between contract drafts for legal review
- Content editor history — Display inline revision tracking in a CMS
- Configuration auditing — Compare config file versions in plain text
Start using Text Diff now
Get your free API key and make your first request in under a minute.