Tools WebHub logoTools WebHub

Code Diff Viewer Online — Free Tool

Perform side-by-side textual comparisons to easily spot differences between two versions of code or text.

Inputs
Paste two versions to compare. Diff runs locally in your browser.
+2-1
Diff
1
line 1
2
-
line 2
3
line 3
4
1
line 1
2
+
line two
3
line 3
4
+
line 4
5
Note: This is a fast line-based diff intended for tool usage. For semantic diffs, we can add an advanced mode later.
Privacy note: All processing happens entirely in your browser. No data is sent to our servers.

About this tool

Code Diff Viewer is a fast, browser-based developer utility. Perform side-by-side textual comparisons to easily spot differences between two versions of code or text. To use it, paste or upload your input in the tool above, choose any options (like formatting style, separators, or output type), and copy or download the result. Because it runs in your browser, it’s ideal for quick edits, previews, and conversions without installing extra software. Common use cases include cleaning up data before sharing, converting formats for a spreadsheet or API, validating content before deployment, and generating outputs you can paste directly into your codebase. If you handle sensitive data, prefer tools that run locally in your browser—this helps reduce the risk of uploading private content to a server.

How to use

  1. Enter or upload your input in the tool panel above.
  2. Adjust any options if provided.
  3. Copy or download the output.

This page is available at /tools/code-diff-viewer.

Related keywords

diff viewercode difftext diffcompare textside by side diff

Related tools

Text Diff Checker
Quickly identify modifications, additions, and deletions between two textual documents using line-based diffs.
Base64 Encoder & Decoder
Securely encode plain text into Base64 format, or decode Base64 strings back to their original readable state.
Border Radius Generator
Configure border radius attributes intuitively and generate the accompanying CSS or Tailwind classes.
Box Shadow Generator
Visually construct box shadows and automatically generate standard CSS or arbitrary Tailwind shadow classes.
Color Picker & Converter
Select custom colors visually and convert seamlessly between HEX, RGB, and HSL color formats.
Cron Expression Explainer
Translate complex 5-field cron scheduling expressions into clear, plain English sentences.

FAQ

What is Code Diff Viewer?

Code Diff Viewer is an online tool that helps you perform side-by-side textual comparisons to easily spot differences between two versions of code or text.

How do I use the Code Diff Viewer?

Add your input in the tool panel, adjust options if available, then copy or download the output.

Is this tool free?

Yes—this tool is free to use.

Does it run locally in the browser?

Most tools are designed to run in your browser. If a tool uploads files to a server, it should say so in the UI.