Line Diff Checker
Compare two texts and see the differences line by line.
Spotting what changed
Comparing two versions of a text to find what changed is far easier with the differences highlighted than by reading both side by side. This compares two texts and shows the differences line by line, so changes stand out clearly.
Paste two texts to compare them.
Why a diff beats reading by eye
Finding differences between two texts by eye is genuinely hard — small changes hide easily, and the mind glosses over them, especially in long or similar documents. A diff does the comparison mechanically, marking exactly what was added, removed or changed, which catches things you would miss. This is invaluable for comparing versions of a document, checking what changed between two drafts, spotting differences in configuration or data files, and reviewing edits. It is the same core idea behind the version-control tools developers rely on, where seeing precisely what changed between versions is essential. For anyone who needs to know what is different between two pieces of text — a contract revision, a code change, an edited article — a line-by-line diff turns a tedious, error-prone eyeball comparison into an instant, reliable one, and doing it in the browser keeps both texts private on your device.
Line Diff Checker FAQ
Why use a diff instead of comparing by eye?
Because small changes hide easily and the mind glosses over them — a diff mechanically marks exactly what was added, removed or changed, catching what you would miss.
What is comparing texts useful for?
Checking what changed between drafts, comparing document or configuration versions, and reviewing edits — the same idea behind version-control tools.
Are my texts uploaded?
No. The comparison happens in your browser.