What's the difference between line diff and word diff?

Line diff compares whole lines at a time, useful for structured or line-based content. Word diff compares individual words, which is often more useful for prose where a single word changed mid-sentence.

Is this the same as the JSON Diff Checker?

It uses the same underlying comparison technique, but this tool is for plain text and prose rather than structured JSON data.

Text Diff Checker

Compare two pieces of text and see exactly what was added, removed or changed.

Original text

Changed text

Your file never leaves this browser tab — everything runs locally on your device.

How to use text diff checker

Paste the original text on the left and the changed version on the right.
Choose "Line diff" to compare whole lines, or "Word diff" for a finer-grained comparison.
Click "Compare" — additions are highlighted green, removals are struck through in red.

Common use cases

Reviewing edits between two drafts of an article or essay.
Spotting exactly what changed between two versions of a document.
Comparing pasted text from two sources to check for differences.

Related tools

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Case Converter

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Text Cleaner

Remove extra spaces, empty lines and duplicate lines from messy text.

Find and Replace

Find and replace text, with optional case-sensitive, whole-word or regex matching.