Developer
Processed locally in your browserDiff Checker
Compare two text snippets or code files side-by-side with color-coded additions, deletions, and inline character differences.
How to Use Diff Checker
1
Paste your original text into the left pane.
2
Paste your modified text into the right pane.
3
Click 'Compare' to view highlighted changes.
4
Toggle between Split (Side-by-Side) and Unified view modes.
What This Tool Does
Computes the longest common subsequence (LCS) diff algorithm to pinpoint line-level and character-level changes between text documents.
Common Use Cases
Comparing code revisions and configuration files before deploying.
Checking revisions between legal agreements and contracts.
Auditing essay drafts and blog post edits.
Privacy & Local-First Processing
Diff calculations run entirely in browser memory. Proprietary source code and confidential documents remain 100% private.
Frequently Asked Questions
Is whitespace considered in the comparison?
You can toggle whether whitespace and indentation changes should be highlighted or ignored.