Text & Code Diff Viewer
Compare two text or code files with instant side-by-side and inline visual diffs, character-level additions and deletions, and line statistics.
Related Tools
Frequently Asked Questions
How does the diff algorithm work? ↓
The diff viewer uses a pure client-side Longest Common Subsequence (LCS) algorithm to compute minimal edits between the original and modified text, highlighting added, deleted, and modified lines in real time.
Is my proprietary code or sensitive document uploaded to any server? ↓
No. All comparison calculations run entirely in your local browser sandbox. No text or source code ever leaves your device.
What is the difference between Side-by-Side and Unified view? ↓
Side-by-side view displays the original text on the left and the modified text on the right with synchronized line heights. Unified (inline) view displays changes stacked sequentially in a single column like a git diff.
Can I ignore whitespace or case differences? ↓
Yes, you can toggle "Ignore Whitespace" to disregard changes in indentation or trailing spaces, and "Ignore Case" to focus exclusively on content changes.