Text Compare
Compare two blocks of text and highlight additions and removals.
What is Text Comparison?
Text comparison (or text diffing) is the process of checking two blocks of text against each other to find exactly what differs between them — which lines were added, removed, or changed. Spotting a single reworded sentence or a subtle edit by reading two long documents side by side is slow and easy to get wrong.
A text compare tool automates that by diffing both inputs line by line and highlighting every difference in color — additions in green, removals in red — so nothing gets missed. Unlike a structured diff for JSON or YAML, a text comparison makes no assumptions about format; it works on any plain text, including prose, source code, logs, and configuration files.
This is useful whenever two versions of the same content need to be reconciled: a revised paragraph, a config file before and after a change, or a log file from a working run versus a failing one.
This page lets you compare two blocks of text online for free, directly in your browser. Paste the original and modified text into the two editors, click Compare, and see a side-by-side diff with additions and removals color-coded — nothing is uploaded or sent to a server.
Why Compare Text?
Document Revisions
Compare two drafts of an article, contract, or report to see exactly which sentences were added, removed, or reworded.
Code & Config Review
Diff a snippet of code or a config file against an earlier version when a code review tool isn’t available or convenient.
Log Comparison
Compare two log dumps to isolate what changed between a working run and a failing one.
Translation & Localization QA
Check a translated or localized string against the source text to confirm structure and placeholders weren’t accidentally altered.
Example
Here are two versions of the same paragraph — comparing them flags the reworded first two sentences and the added attribution line.
The quick brown fox jumps over the lazy dog.
Pack my box with five dozen liquor jugs.
How vain it is to sit down to write when you have not stood up to live.The quick brown fox leaps over the lazy cat.
Pack my bag with five dozen liquor jugs.
How vain it is to sit down to write when you have not stood up to live.
— Henry David ThoreauFeatures
Compare
Diff two blocks of text and highlight added and removed lines.
Any Plain Text
Works with prose, source code, logs, config files, or any text-based content.
Paste from Clipboard
Paste text directly into either editor with a single click.
Sample Data
Load two sample paragraphs to see how the diff view works.