303,525 datasets indexed1,419 publishers
Open Data IndexThe index of open data about the Netherlands
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Datasets on data.overheid.nl by file format: most JSON (9,492 datasets), then Atom-feed and WMS (map service)

Datasets on data.overheid.nl by file format, October 2026, in datasets. Total: 20,791; the largest 12 of 40 categories are shown. JSON is 46% of the total. A dataset can come in several formats; percentages are of all datasets.

Source: data.overheid.nl (CKAN-API, facetten) · opgehaald 25 oktober 2026Open the table Single block

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