Text Compare — Find Differences Between Two Texts

Original text

Changed text

Share X / Twitter Facebook LinkedIn WhatsApp

How to use Text Compare

Paste the first version into the left box and the second into the right.
Run the comparison — the tool builds a side-by-side, line-numbered view.
Scan the highlights: only differing lines are marked, with a count of changed lines at a glance.
Fix or reconcile the differences in your source document, re-paste and re-run to confirm a clean match.

What is Text Compare?

A text compare tool places two versions of a text side by side and marks the lines that differ, with line numbers and a change count. Instead of proofreading both copies in parallel, you paste them into two panes and read off exactly where they diverge.

Human eyes are bad at this task — a changed number, a swapped word or a deleted clause hides easily in a page of prose, and the cost of missing it ranges from embarrassing (publishing the draft, not the final) to expensive (signing the altered contract revision). Machine comparison misses nothing.

About the Text Compare

Paste the original text on the left and the revised text on the right, run the comparison, and every differing line is highlighted in a numbered side-by-side view with a total change count.

Typical checks: which lines a colleague changed in a returned document, whether two config or environment files really match, what differs between two versions of terms or contract text, whether a backup matches the current copy, and which entries differ between two exported lists. Comparison is line-based — the same granularity as version-control diffs — which suits configs, lists and structured prose.

Both texts stay in your browser; nothing is uploaded, so contracts and configs are safe to compare here.

Frequently Asked Questions

It flags the whole line as changed — line-level granularity, like classic diff. For prose where lines are long, splitting sentences onto their own lines first makes changes easier to pinpoint.

Invisible characters: trailing spaces, tabs vs spaces, or Windows vs Unix line endings. They're real differences even when invisible — often the exact bug when comparing configs.

Yes — line-based comparison is precisely how developer diff tools work, so .env files, YAML, JSON and code compare naturally. For big multi-file projects, git diff remains the right tool.

The comparison runs to the longer text's length; extra lines in either version show as differences against an empty counterpart, so additions and deletions are visible, not just edits.

Yes — both texts are processed entirely in your browser and never uploaded or stored. Closing the tab removes every trace.

Learn more

How to Compare Two Texts and Spot the Differences

Two versions of a document that look identical but behave differently? Here is how to diff text and find every change.

Read the guide