Side-by-Side Word Diff
Compare two texts word by word with inline insertions and deletions highlighted. Perfect for detailed editing review.
About This Free Online Side-by-Side Word Diff
Our free online Side-by-Side Word Diff compares two texts at the word level, showing exactly which words were added, removed, or changed. Unlike line-based diff tools, this provides granular detail — perfect for editors reviewing sentence-level changes, students checking rewrites, or anyone who needs to see exactly what words changed between two versions. Changes are highlighted inline with green for additions and red for deletions within each line. All processing runs in your browser.
Features of Our Side-by-Side Word Diff
- Word-level diff within each line
- Insertions highlighted in green
- Deletions highlighted in red
- Side-by-side original and modified view
- Line-level context with word changes
- Real-time comparison as you type
- 100% private — browser-only processing
How to Use the Side-by-Side Word Diff
Using this tool is simple and requires no signup or registration. Follow these steps:
- Paste the original text into the left textarea.
- Paste the modified text into the right textarea.
- View the word-by-word diff with inline highlights.
- Copy either version using the action buttons.
Frequently Asked Questions About Side-by-Side Word Diff
How is this different from the Text Diff Checker?
This tool highlights changes at the word level within lines. The Text Diff Checker shows line-level changes. Use this for detailed editing review and the line diff for broader comparison.
How are changes displayed?
Within each changed line, words that were removed are shown with a red background/strikethrough, and words that were added are shown with a green background.
Why Choose Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.