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Utilnivo

Developer

Utilnivo

Code Compare

Compare source files such as JavaScript, TypeScript, Java, Python, HTML, CSS, and SQL.

No registration
  • On your device

Browse more in Developer or all tools.

Private on your device

Your information stays on your device and is not uploaded.

Related tools

Paste or drop two source files to review a line-level diff in the shared Compare workspace. Code mode supports JavaScript, TypeScript, Java, Python, Apex, HTML, CSS, SQL, and other text-based source files already detected by Compare. This is a line diff, not a compiler or AST merge. Comparison runs in your browser.

Code Compare is a source-file difference checker. It opens in code mode so you can paste or drop two versions and review a line-level diff.

Supported file extensions include JavaScript, TypeScript, Java, Python, Apex, HTML, CSS, and SQL, plus other text-based source files the workspace already detects as code.

The diff is line-based. Renames that stay on one line show as a change on that line. Moved blocks can appear as a removal plus an addition.

Code Compare uses the same workspace as the Compare hub. You still get side-by-side and unified views, difference navigation, and local processing.

Paste and file comparison stay in your browser. Use URL Compare if you need to fetch HTML from a live page instead of pasting source.

How to use this tool

1. Code Compare opens with document type set to Code. 2. Paste or drop the original file on the left and the updated file on the right. 3. Click Compare. 4. Step through added, removed, and changed lines. 5. Switch to unified view when you want a single stacked diff. Comparison runs in your browser.

Worked example

Example: paste a JavaScript function that uses timeout = 5000 on the left and timeout = 10000 on the right. Compare highlights that line and leaves unchanged lines in place. The same flow works for TypeScript, Java, Python, Apex, HTML, CSS, and SQL files.

When to use this

  • Reviewing a patch without opening a Git client.
  • Comparing two snippets from a code review.
  • Checking HTML, CSS, or SQL files dropped from disk.

Common examples

  • A JavaScript timeout change in a small config file.
  • Two SQL queries that differ by a WHERE clause.
  • HTML templates before and after a class-name update.

Common mistakes

  • Expecting language-aware refactor matching. This is a line-level source diff, not a compiler or AST merge.
  • Comparing minified and formatted bundles and treating every wrap as a logic change.
  • Dropping PDF or Office files here. Use the Files tab on the Compare hub for those types when a provider is available.

How it works

Paste or drop two source files. Code mode runs a line-level diff in your browser for JavaScript, TypeScript, Java, Python, Apex, HTML, CSS, SQL, and other text-based source files. Review added, removed, and changed lines in side-by-side or unified view.

Limitations

Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.

Privacy and file handling

Your data stays on your device and is not uploaded.

FAQ

Frequently asked questions

Which languages can I compare?

Code mode detects JavaScript, TypeScript, Java, Python, Apex, HTML, CSS, SQL, and other text-based source files already supported by Compare. The diff is line-level, not syntax-aware refactor matching.

Is source uploaded?

No. Paste and file comparison run in your browser.

Is Code Compare free to use?

Yes. Utilnivo tools are free to use and do not require an account.

Related pages

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