Text Diff Checker

Open both files, copy the contents, and paste them into the two input boxes — left side for the original, right side for the new version. The tool highlights every difference: insertions in green, deletions in red, unchanged content in normal text. You can switch between line-level diff and word-level diff depending on how granular you need the comparison. Useful for reviewing edits, checking what changed in a contract, or spotting what got modified in a code snippet.

Paste the first version into the left input and the second version into the right. The diff checker compares them line by line and highlights additions, deletions, and modifications. Switch to word-level mode to see exactly which words changed inside a line — useful when most of a sentence is the same but one phrase has been swapped. The output makes it easy to skim and spot every change without re-reading both versions in full from start to end.

Paste both versions into the diff checker and stick with the default line-level view. Each line of one text is compared against the corresponding line in the other, and any differences get highlighted. Lines added in the new version show in green; lines removed show in red; unchanged lines stay neutral. This view is perfect for code review, contract revisions, or any case where line breaks structure the document and you need to spot which lines moved or changed.

Paste paragraph one into the left box and paragraph two into the right. Run the diff. If the tool shows no highlights and reports zero differences, the paragraphs are identical character for character — including spacing and punctuation. Even a single different space or trailing newline will register as a change. If you want to compare ignoring whitespace differences, look for an "ignore whitespace" toggle. Without it, "Hello world" and "Hello world" will look different.

Drop the old version into the left box and the new version into the right. The diff checker highlights what was added, deleted, and modified. Useful for tracking edits to articles, comparing contract revisions, reviewing code commits, or spotting what changed in a manuscript draft. The colour coding makes it quick to scan even very long documents — you only have to read the highlighted parts, since unchanged content is dimmed or marked as identical to the previous version.

Paste both texts into the diff checker and run the comparison. Additions are usually shown in green, deletions in red, modifications in a different colour or style. Some diff tools show changes inline (within the same view), others show them side-by-side (one column for old, one for new). Both views are useful — inline for quick reading, side-by-side for serious review. Pick whichever the tool offers, or switch between them for different perspectives.

Paste the first string into one box and the second into the other. Even short strings — a few words or a single line — work fine in the diff checker. The tool shows you exactly where the two differ. Useful for spotting typos in product names, comparing two slightly different command-line arguments, or checking why two seemingly identical config values aren't matching in your code. The character-level diff view is especially helpful for very short comparisons.