Clean text & lists · Experimental helper

Text Compare: Find Differences Between Texts

Compare two texts by line position and list the lines that differ.

Work stays in your browserLocal tool processing

Add the original and changed text. Comparison follows line positions.

Private by designYour input stays on your device. Processing happens in this browser.
Your workspace

Add your input

Compare line positions

Ctrl / ⌘ + Enter to run
Result

A clear result starts here

Run the tool to see your output here.

Try the example to explore how it works.
What to know about this tool

This is a positional line comparison, not an aligned or word-level diff. One inserted line can make subsequent lines appear different. Up to 1 MB and 20,000 lines per input.

Clear this workspace?

Your inputs, selected files, and current result will be cleared.

Get a result you can use

Instructions and examples

From input to output

  1. Add Original text and Changed text, typed or imported from TXT.
  2. Select Compare texts.
  3. Read the line-numbered minus/plus differences and copy or download the report.

Settings and result behavior

  • Lines are compared by position, not by a word-level edit algorithm.
  • Spaces and capitalization are significant. A new line near the top can make many later lines appear changed.

A worked example

Input
Original: Hello
Draft

Changed: Hello
Ready
Settings
No normalization settings.
Expected result
Line 2 shows − Draft and + Ready.

Supported input and limits

Type or paste text, or use the TXT import control for a UTF-8 text file. PDF and Word documents cannot be imported into this text workspace. Download TXT saves the difference report, not a merged draft.

This is a positional line comparison, not an aligned or word-level diff. One inserted line can make subsequent lines appear different. Up to 1 MB and 20,000 lines per input.

If the result is unexpected

  • For many differences after one inserted line, align the text or review the line shift first.
  • “No line differences” means the line values match under line-ending handling; it does not compare document formatting.

Check before using the result

Inspect the original and changed drafts for context. A report is a review aid and cannot decide which version is correct.

Report a problem with this tool. Include a nonsensitive example and your browser details.