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Geo Diff

ExtensionTools
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Overview

Compare two GeoJSON layers: added, removed, changed. Runs locally in your browser.

Geo Diff compares a “before” and “after” GeoJSON layer so you can see what changed. What it does • Match features by property ID, geometry fingerprint, or index • Classify added / removed / changed / unchanged • Detect geometry changes and attribute changes • Color-coded map preview • Export changed features, tagged GeoJSON, or a JSON report Why it’s useful • Review data updates before publishing • QA digitizing edits between versions • Spot missing IDs and duplicate keys Privacy • Files are processed locally on your device • Map tiles load from OpenStreetMap for preview only • No account required — processed on your device How to use 1. Click the Geo Diff icon 2. Load Layer A (before) and Layer B (after) 3. Choose how to match features 4. Review the summary and map, then export

Details

  • Version
    1.0.1
  • Updated
    August 11, 2026
  • Size
    125KiB
  • Languages
    English
  • Developer
    Email
    ylf4050@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, visit the developer's support site

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