Comparador de Diferencias
Compara dos textos o fragmentos de código y ve las diferencias con resaltado por líneas. Ofrece vistas dividida (lado a lado) y unificada, números de línea, estadísticas de cambios y copia del resultado con un clic. 100% en el navegador.
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What is a Diff Checker?
A diff checker (or text comparison tool) identifies and highlights the differences between two pieces of text. The concept originated from the Unix diff command created by Douglas McIlroy in 1974, which became a cornerstone of version control systems. Modern diff tools use algorithms like Myers' diff to compute the minimal set of changes needed to transform one text into another. This tool runs entirely in your browser, computing diffs in real time without sending any data to a server.
How to Use This Diff Checker
- Paste or type your original text in the left panel
- Paste or type the modified text in the right panel
- Click Compare to see differences highlighted line by line
- Toggle between Split View (side by side) and Unified View
- Use options like Ignore Whitespace or Ignore Case for flexible comparison
Frequently Asked Questions
What is the difference between split view and unified view?
Split view shows the original and modified texts side by side in two columns, making it easy to compare corresponding lines. Unified view combines both into a single column with + and - prefixes, similar to git diff output. Split view is better for visual comparison, while unified view is more compact and familiar to developers.
What does Ignore Whitespace do?
When Ignore Whitespace is enabled, the diff ignores differences in spaces, tabs, and trailing whitespace. This is useful when comparing code that may have been reformatted or when indentation style changed but the actual content is the same.
Can I compare code files with this tool?
Yes. This diff checker works with any plain text including source code in any programming language, configuration files, CSV data, JSON, XML, HTML, Markdown, and more. Simply paste your code into the two panels and compare.
How does the diff algorithm work?
This tool uses a line-by-line comparison algorithm that identifies the longest common subsequence (LCS) between the two texts. Lines present only in the original are marked as deletions (red), lines present only in the modified text are marked as additions (green), and matching lines are shown as unchanged context.
Is my data safe?
Yes. This diff checker runs 100% in your browser. No text is uploaded to any server. Your code, documents, and data never leave your device.
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