Text Comparison

Diff Checker

Compare two text blocks and inspect additions, removals, and unchanged content in a clean, readable view. Useful for drafts, code snippets, notes, and document revisions.

Compare Texts
Text 1 (Original) Left side
Text 2 (Modified) Right side
Differences
0
Text 1 Lines
0
Text 2 Lines
0
Added Lines
0
Removed Lines
Comparison Status –
Similarity –
Matching 0%
Ready to compare text.

How to Use

1
Paste the original text on the left and the modified version on the right.
2
Choose a comparison mode such as character, word, or line, and decide whether case should matter.
3
Click Compare to generate the diff view and summary statistics.
4
Review additions and removals in the result panel, or swap the texts to reverse the perspective.

Comparison Modes Explained

Character Mode: Best for very precise small changes such as punctuation, spacing, or short code edits.

Word Mode: Useful when comparing sentences, paragraphs, and edited content where word-level shifts matter most.

Line Mode: Best for code, logs, lists, and multi-line documents where full-line changes are easier to inspect.

Case Sensitive: When enabled, uppercase and lowercase differences are counted. When disabled, case is ignored.

Why Use This Tool

🔍

Detailed Comparison

Inspect changes between two text blocks with more than one comparison mode.

📊

Clear Statistics

See counts for lines, additions, removals, and similarity without digging through the output.

🎯

Flexible Modes

Switch between character, word, and line comparison depending on what you are reviewing.

🔒

Local Processing

The intended runtime compares the text in the browser without sending it to a server.

Common Use Cases

Code Review: Compare snippets before and after edits to spot what changed.

Document Revisions: Review version differences in notes, drafts, or copied content.

Content Checking: Compare source and edited text for missed changes or formatting drift.

Debugging: Contrast a working block of text or code against a broken one to narrow down the problem.

Frequently Asked Questions

What is the difference between the modes?
Character mode is more granular, word mode is more readable for prose, and line mode is usually the most practical for structured multi-line text.
Can I compare large text blocks?
Yes, but very large comparisons may slow the browser depending on the chosen mode and the amount of changed content.
How is similarity estimated?
It is an approximate measure based on how much content still matches after normalization and comparison, not a legal or academic scoring system.