Text Compare Tool

A fast, browser-based tool to compare two text passages, show differences, and export results for writers, developers, and editors.

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About This Tool

This tool compares two text inputs to surface precise differences. It supports writers, editors, developers, and researchers who need a delta rather than a rewritten text. The system accepts two text blocks and returns a structured delta, including added, removed, and modified segments, with options for side-by-side or unified views. It is suitable for policy changes, manuscript revisions, code comments, technical notes, and review workflows where traceability matters.
Conceptually, the tool tokenizes both inputs and computes a minimal edit script using a longest common subsequence approach. The result highlights changes without altering original content, enabling traceable reviews and clean patch generation. All processing is designed to be language-agnostic and handles typical Unicode content, with optional case sensitivity and whitespace handling to fit differing authoring standards.
Audience and value: teams performing document localization, API spec updates, software documentation, legal drafts, or academic manuscripts benefit from faster reviews, reproducible diffs, and clear change history. The tool supports multiple encodings, large texts, and can export results for integration with version-control or content-management workflows.
Core features include two text inputs, toggleable options for case sensitivity and whitespace, a structured diff output, and exportable reports. Use cases include revising manuscripts, tracking policy updates, comparing translations, and validating consistency between source and translated materials. Privacy is prioritized as calculations run locally in the browser.

How to Use

  1. Provide inputs by pasting or uploading two text blocks.
  2. Configure options: toggle case sensitivity and whitespace handling as needed.
  3. Run comparison: trigger the diff computation.
  4. Review outputs: examine added, removed, and modified segments in the chosen view.
  5. Export results: save as JSON or patch-style report.
How to use text compare tool microsoft

Frequently Asked Questions

Find Quick Answers

What diff algorithm is used?
The tool uses a longest common subsequence (LCS) based diff algorithm to identify the minimal set of edits. It supports both block-level and line-level changes and presents results in a stable, interpretable order.
Is data stored or transmitted?
All processing is performed locally in the browser. No text data is uploaded to servers unless you explicitly export results or copy patches.
What inputs formats are supported?
Inputs are treated as plain text with Unicode support. Binary content is not diffed; code blocks, paragraphs, and plain text are compared as sequences.
Can I customize ignore options?
Yes. You can enable case sensitivity, whitespace handling, and optionally ignore common words or punctuation to tailor the diff to your workflow.

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