Text Similarity Checker: Compare Two Texts Online | Free Tool

A Using Levenshtein distance: the minimum number of single-character edits (insertions, deletions, substitutions) to change one text into another.

A Green (70%+): Very similar. Yellow (40-70%): Somewhat similar. Red (below 40%): Not similar.

A It provides basic similarity comparison. For comprehensive plagiarism detection, use a dedicated plagiarism checker.

A Yes.

A The 'common words' feature highlights specific vocabulary shared between your two texts. By identifying these identical terms, you can quickly understand the linguistic overlap and pinpoint areas of similarity or unique content. This is invaluable for content creators and editors aiming to refine documents, avoid redundancy, ensure consistent terminology, or understand how two texts relate beyond just their overall similarity percentage. It provides granular insight into your text analysis.

A Yes, absolutely! Our text similarity checker is excellent for comparing code snippets, scripts, or configuration files. It uses Levenshtein distance to pinpoint exact character-level differences, making it easy to spot changed lines, missing brackets, or updated variable names between two versions. This is highly useful for developers, QA engineers, or anyone reviewing pull requests and ensuring consistency in their codebase or documentation.

A You can paste up to 5,000 characters into each text box. This limit ensures the tool runs quickly and accurately for most common use cases. If you're comparing longer documents, try splitting them into sections of around 2,500 characters each. This way, you can still get a solid similarity score for each part.

A The Levenshtein distance is symmetric, so the base edit distance stays the same regardless of order. But the percentage is calculated relative to the longer text's length. Swapping texts changes which one is considered the reference, which can shift the percentage by a few points. For example, comparing a 100-character text to a 200-character text gives different percentages each way. Stick with one order for consistent comparisons.

A Yes, it works fine on mobile browsers. The text boxes resize to fit smaller screens, so you can paste and compare on the go. One tip: on a phone, try splitting longer texts into chunks under 2,000 characters. It's easier to manage and the similarity score stays reliable. The layout adjusts automatically, no app download needed.