Text Compare

Compare two texts online and highlight added and removed lines — free diff checker.

Options

About

About the Text Compare

Compares two blocks of text line by line and highlights which lines were added, removed or unchanged.

Writers use it to see what changed between two drafts of a document, while developers compare two versions of a config file or snippet. It's part of Toolapt's broader set of free text tools, needing no account and placing no limit on how often you use it.

Choose what to view about this tool

Guide

Using the Text Compare

  1. 1

    Step 1

    Paste the original text into the Original box.

  2. 2

    Step 2

    Paste the changed version into the Changed box.

  3. 3

    Step 3

    Turn on "Ignore leading and trailing spaces" or "Ignore case" if minor differences shouldn't count.

  4. 4

    Step 4

    Click Compare to see a line-by-line breakdown of what changed.

  • Compares two texts line by line and marks each line as added, removed or unchanged
  • Optional "Show unchanged lines" toggle, so you can focus on just the differences if you prefer
  • Optional ignoring of leading and trailing spaces so whitespace-only differences don't count
  • Optional case-insensitive comparison so "Hello" and "hello" are treated as the same line
  • Works entirely in your browser — no installs and no sign-up
  • Free to use, with no limit on how many times you run it
  • Fully responsive, so it works just as well on a phone as on a desktop

Writers and editors

Writers and editors use Text Compare for seeing exactly what changed between two drafts of an article or document.

Developers

Developers use Text Compare for spotting differences between two versions of a config file, snippet or log output.

Students

Students use Text Compare for checking how their revised essay differs from an earlier draft.

Translators and proofreaders

Translators and proofreaders use Text Compare for confirming that only the intended lines were edited between revisions.

Examples

Text Compare examples

3 worked examples

01

A single changed line

Comparing three lines where only "This is line two" became "This is line 2" marks that line as removed (−) and added (+), with the other two unchanged: "1 line(s) removed, 1 line(s) added."

02

A line added at the end

Adding "Cherry" as a third line shows up as one added line, + Cherry, with Apple and Banana marked unchanged.

03

Ignoring case

With "Ignore case" turned on, "Hello World" and "hello world" are treated as identical lines, and the tool reports "The two texts are identical."

Related tools

Line Prefix, Suffix and Numbering

Add text to the start or end of every line, and number your lines.

Use it

Email and Link Extractor

Pull emails, links, numbers, hashtags or IP addresses out of any text.

Use it

Readability Checker

Flesch reading ease and grade level, so you can see how hard your text is.

Use it

Palindrome and Anagram Checker

Check whether text reads the same backwards, or whether two words share the same letters.

Use it

Caesar Cipher and ROT13

Shift letters by a fixed amount to encode or decode text. ROT13 is a shift of 13.

Use it

Morse Code Converter

Convert text to Morse code and back again.

Use it

FAQ

Frequently asked questions

Quick answers to common questions about the Text Compare.

What does Text Compare do?

It compares two blocks of text line by line and shows which lines were added, removed or left unchanged.

Is Text Compare free to use?

Yes. It's free, with no sign-up, no watermark and no limit on how many times you use it.

Is my text safe when I use this tool?

Yes. Both texts you paste are processed entirely on your own device — nothing is sent to a server.

Can I hide the lines that didn't change?

Yes. Turn off "Show unchanged lines" to see only the lines that were added or removed.

What does "Ignore leading and trailing spaces" do?

It trims spaces at the start and end of each line before comparing, so indentation-only differences don't get flagged as changes.

What does "Ignore case" do?

It treats lines that differ only in capitalization as identical, so "Hello" and "hello" won't be flagged as a change.

Does Text Compare work word by word instead of line by line?

No, it compares whole lines against each other; a single changed word will mark that entire line as changed.

Does Text Compare have any limitations?

It's built for everyday text; extremely long documents are still handled but may take a moment longer to compare.

Still have a question? Contact us

Report a problem

Text Compare

What went wrong?
    or paste a screenshot