Tools and deep dives for Power BI developers — open source PBIX parser, file format internals, and a native macOS viewer. Built in London, UK.https://www.pbixray.com/https://www.pbixray.com/posts/pbix-info-browser-wasm/https://www.pbixray.com/posts/pbix-info-browser-wasm/PBIX.info: a browser-based PBIX inspector built on WebAssembly. Local-first parsing, interactive diagrams, and shareable collaboration links.Mon, 27 Apr 2026 08:00:00 GMThttps://www.pbixray.com/posts/vertipaq-rle-optimization/https://www.pbixray.com/posts/vertipaq-rle-optimization/How VertiPaq appears to use a greedy row-reordering algorithm to maximise RLE compression across all columns in a segment.Tue, 21 Apr 2026 08:00:00 GMThttps://www.pbixray.com/posts/reconstructing-column-data-from-idf-and-idfmeta/https://www.pbixray.com/posts/reconstructing-column-data-from-idf-and-idfmeta/How VertiPaq stores column segments in .idf and .idfmeta files, and how those files combine to reconstruct imported table data from a PBIX file.Tue, 14 Apr 2026 08:00:00 GMThttps://www.pbixray.com/posts/vertipaq-dictionaries-and-hash-indexes/https://www.pbixray.com/posts/vertipaq-dictionaries-and-hash-indexes/How VertiPaq stores dictionaries and hash indexes inside a PBIX file, and how those structures help turn internal IDs back into readable values.Tue, 07 Apr 2026 08:00:00 GMThttps://www.pbixray.com/posts/parsing-pbix-python/https://www.pbixray.com/posts/parsing-pbix-python/Extract tables, measures, M queries, and report metadata from any PBIX file using the open source Python library pbixray — no Power BI required.Tue, 17 Mar 2026 08:00:00 GMThttps://www.pbixray.com/posts/semantic-model-tables-measures/https://www.pbixray.com/posts/semantic-model-tables-measures/How metadata.sqlitedb inside a PBIX file exposes the semantic model as an embedded SQLite database, mirroring the same objects as TMSCHEMA DMVs.Tue, 24 Feb 2026 08:00:00 GMThttps://www.pbixray.com/posts/datamodel-engine/https://www.pbixray.com/posts/datamodel-engine/Power BI embeds a full Analysis Services Vertipaq engine inside every PBIX file. This article explains how the DataModel stream works and what it contains.Tue, 27 Jan 2026 08:00:00 GMThttps://www.pbixray.com/posts/pbix-zip-structure/https://www.pbixray.com/posts/pbix-zip-structure/A PBIX file is a ZIP archive. Here's a map of every entry inside it — what each file does and how they relate to one another.Tue, 20 Jan 2026 08:00:00 GMThttps://www.pbixray.com/posts/pbix-format-overview/https://www.pbixray.com/posts/pbix-format-overview/An introduction to the .pbix file format — what it contains, how Power BI uses it, and why its internals matter for developers and data engineers.Tue, 13 Jan 2026 08:00:00 GMT