Code Diff Viewer - Compare Code Online

Compare the differences between two pieces of code

Old code

New code

+{stats.added} added-{stats.removed} removed0 unchanged

Code Diff Viewer - Professional Free Online Code Comparison

Tool to compare the difference between two free online codes from Tan Phat Digital. Supports 2 views: Unified view (like git diff) and Split view (2 parallel columns). Highlight green additions and clear red deletions. Display line numbers for both versions, detailed statistics on line numbers added, removed, unchanged. Button to change old code position ↔ new, copy diff output in standard +/- format. Works with any programming language: JavaScript, TypeScript, Python, Java, PHP, C#, Go, Ruby, HTML, CSS, SQL, JSON, YAML, Markdown. 100% offline processing in the browser, no uploading code to the server - absolutely secure.

Outstanding features

Compare any two pieces of code with the smart diff algorithm
2 view modes: Unified view and Split view
Unified view: displays diff in 1 column with +/- prefix (like git diff)
Split view: 2 parallel columns, old code on the left, new code on the right
Highlight additions in green (#22C55E) clearly
Highlight deletions in red (#EF4444) clearly
Displays line numbers for both versions
Detailed statistics: number of lines added, removed, unchanged
Button to quickly change the position of old code ↔ new
Copy diff output in standard +/- format git diff
Works with all programming languages ​​and text files
100% offline processing, no uploading code to the server

Why is it necessary to compare code in the software development process?

Code diff is an essential tool in the modern software development process. It helps you: Review code changes before committing or merging into the main branch - ensuring there are no errors or unwanted code. Debug effectively by comparing the working version with the error version to find the bug-causing change. Understand changes in pull requests from colleagues before approving. Check who edited what in the file when a problem occurs. Learn from how others refactor code to improve your skills. This tool is especially useful when you do not have access to the Git repository, need to quickly compare any two pieces of code from different sources, or want to share diffs with non-Git users.

Benefits when used

  • •Code review is quick and intuitive
  • •Debug changes effectively - find changes that cause bugs
  • •Track modifications easily between versions
  • •No need to install Git or any other software
  • •Absolute security - code is not uploaded to the server
  • •Works with any programming language
  • •Share diff easily with standard format
  • •Free unlimited use

Detailed instructions on how to compare codes online

  1. 1Paste the old code (original/before) into box
  2. 2left
  3. 3Paste the new code (modified/after) into box
  4. 4right
  5. 5See the diff automatically displayed below with highlighting
  6. 6Select Unified or Split view according to your preference
  7. 7View statistics: number of lines added (green), removed (red), unchanged
  8. 8Click
  9. 9If you need to swap old and new code
  10. 10Click the Copy button to copy diff output in +/- format
  11. 11Share diff text with colleagues if needed

Cooperate immediately with Mavis Digital

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