Сравнение текстов

Сравнивайте два текста рядом с синхронной прокруткой.

What is this text diff tool?

Text Diff is a free online tool that compares two blocks of text side by side and highlights every addition, deletion and change at the word level — entirely in your browser, with nothing uploaded.

How can I compare two texts and see the differences?

Paste the original text on the left and the changed text on the right, then click Compare. Differences are highlighted inline with synchronized scrolling, and nothing you paste leaves your device.

Key features

Word-level highlighting
Pinpoints exactly which words were added or removed, not just which lines changed, so small edits stand out.
Synchronized scrolling
Both panes scroll together so matching sections stay aligned, even across long documents.
Swap & re-compare
Flip the original and changed text with one button to read the diff from the opposite direction.
Counts at a glance
Totals for added, removed and unchanged segments show how much really changed.

How to use it

Paste your original text into the left pane and the revised version into the right pane, then click Compare. Added text is highlighted in one colour and removed text in another, with both panes scrolling in sync. Use Swap to reverse the comparison.

Frequently asked questions

Does this tool upload my text anywhere?

No. The comparison runs in JavaScript in your browser, so contracts, code and private notes never leave your computer.

Does it compare word by word or line by line?

Both. It aligns matching lines first, then highlights the precise words that differ within them.

Is there a length limit?

There is no server-side limit because processing is local; very large texts are bounded only by your device's memory.

Toolbox builds this on a battle-tested diff algorithm (the same Myers-style approach used by Git), so results match what developers expect from professional version-control tools.