7 listings we've seen · as of 3 Oct 2026. This is the maker name shown on the store, not proof of who owns the company.

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Convert GeoJSON Point/Line/Polygon between WGS84, GCJ-02, BD-09. Runs locally.

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Export the current page article to Markdown or Word. Runs locally in your browser.

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Convert GeoJSON, KML, WKT, and Shapefile; preview on a map. Free & local-only.

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Export HTML tables or directory cards from the current page to CSV, Excel, JSON, Markdown, or PNG. Runs locally.

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Extract colors and design tokens from the current page: palette, hex/rgb, WCAG contrast. Runs locally.

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Audit the current page for SEO basics: titles, headings, meta, images, links, and more. Runs locally.

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