Text Comparison

Compare two blocks of text and see similarity, unique, and shared lines.

How to Use Text Comparison

Enter TextType or paste your text into the field above

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Text Comparison — Free Text Utility

Text Comparison analyzes two blocks of text line by line, calculating a Jaccard similarity percentage and listing exactly which lines appear only in the first text, only in the second, or in both — a fast way to spot differences between two document versions, check how much two pieces of writing overlap, or verify a rewritten paragraph is sufficiently distinct from its source. Unlike a simple word-for-word diff, the similarity score gives a single overall number summarizing how alike the two texts are, while the line-by-line breakdown shows exactly what changed. This is commonly used for comparing draft revisions, checking paraphrased content against an original, or verifying two configuration files match.

Keywords and Search Terms

People searching for this tool use terms like: text comparison tool, compare two texts online, text similarity checker, diff text tool, compare paragraphs. Tooliby provides this utility free with no signup, no watermarks, and no data logging.

Privacy — Your Data is Never Stored

Every input you paste into Tooliby text tools is processed in memory and immediately discarded. We do not log inputs, store results, or analyze your data.

Frequently Asked Questions

Using Jaccard similarity: the number of lines common to both texts divided by the total number of unique lines across both, expressed as a percentage.

No — lines are compared as a set, so the same lines in a different order between the two texts still count as matching content.

This tool compares whole lines. For very short texts, paste each sentence on its own line to get a finer-grained comparison.

It's a useful similarity signal for two specific texts you provide, but it doesn't search the internet — for full plagiarism detection against published sources, use the dedicated Plagiarism Checker tool.