Text Diff / Compare Two Texts

A text diff tool compares two pieces of text and shows you exactly what changed between them. It highlights additions, deletions, and modifications so you can quickly spot the differences without reading through everything line by line.

Writers, editors, developers, and anyone who works with text versions will find this useful. It's great for reviewing edits, checking what changed in a document, or comparing different drafts of the same content.

This tool uses a diff algorithm to analyze both texts and find the longest common sequences between them. It then marks anything that's not in both versions as either an addition or a deletion.

• Green highlighting shows text that was added in the modified version.
• Red highlighting shows text that was removed from the original.
• Unchanged text appears without any highlighting.

The comparison happens entirely in your browser, so your text never gets sent to any server. This makes it safe for comparing sensitive documents or private content.

There are plenty of situations where comparing two texts comes in handy.

• Content editing. See what changes an editor made to your article or blog post.
• Version control. Compare different drafts of a document to track how it evolved.
• Code review. Check what changed between two versions of a script or configuration file.
• Legal documents. Spot changes in contracts or agreements before signing.
• Translation checking. Compare original and translated text to make sure nothing was missed.

Any time you need to answer the question "what changed?" this tool will save you time.

The similarity score tells you how much of the original text remained unchanged in the modified version. A score of 100% means the texts are identical. A score of 0% means they have nothing in common.

This is calculated by comparing the number of unchanged characters to the total length of both texts. It gives you a quick sense of how different the two versions are without having to count every change yourself.

Keep in mind that similarity doesn't always mean quality. Sometimes a heavily edited piece with a lower similarity score is actually better than a barely-touched version with a high score.

This tool offers three different ways to view the comparison results.

• Inline View. Shows additions and deletions mixed together in a single block. Deleted text has a strikethrough and red background. Added text has a green background. This is good for seeing exactly where changes occurred in context.
• Side by Side. Displays the original and modified texts in two columns next to each other. This makes it easy to compare the overall structure and length of both versions.
• Unified Diff. Shows changes in a format similar to what developers use in version control systems. Each line is prefixed with a + or - to show additions and deletions. This is the most compact view for text with lots of line-based changes.

Try each view to see which one works best for the type of content you're comparing.