# Line by Line Text Diff

Compare two texts with an exact line sequence and show additions and removals.

[Open this tool](https://whatson.pk/developer-text-diff-calculator/)

Category: Developer & Data

Two text versions can differ through inserted lines as well as changed wording.

Paste each version and inspect the additions and removals in line sequence.

## Inputs and controls

* Before
* After
* Whitespace: Compare exactly; Ignore line edge whitespace

## How to use

* Paste or enter before.

* Paste or enter after.

* Choose whitespace.

* Select Process input. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.


## Why use this tool

The original submissions remain unchanged while differences are presented separately.


## Before relying on the result

Uses a line based longest common subsequence. Limited to 200 lines per text. The full submitted texts remain unchanged.


## Tool limitations

Uses a line based longest common subsequence. Limited to 200 lines per text. The full submitted texts remain unchanged.

## Questions

### Is every changed line a change in meaning?

No. Spacing and line breaks can affect the comparison. Review the surrounding text before interpreting it.

### What should I check before using Line by Line Text Diff?

Check Before, After and Whitespace. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-04T16:58:29+00:00

This profile describes the tool. It does not execute it or supply a professional certification.