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ParquetKit
View, query and convert Parquet files in your browser
Free online Parquet viewer, SQL workbench and converter. Everything runs locally in your browser — your files never leave your device.
I got tired of spinning up a notebook just to peek at a .parquet file someone sent me, so I built ParquetKit: a viewer, SQL workbench, and converter that run entirely client-side.
The core idea is two engines loaded at different times. hyparquet (~10KB) reads just the metadata footer for an instant schema and preview, and DuckDB-WASM lazy-loads only when you actually run SQL or convert a file. There's no backend at all, it's a static export, so there's nowhere to upload your file to, which matters if you're dealing with data you can't paste into a random online converter or AI chatbot.
Everything is free, no signup, MIT licensed. Would love feedback, especially on what formats you'd want next: Avro? Arrow?
About ParquetKit on Product Hunt
“View, query and convert Parquet files in your browser”
ParquetKit was submitted on Product Hunt and earned 0 upvotes and 4 comments, placing #130 on the daily leaderboard. Free online Parquet viewer, SQL workbench and converter. Everything runs locally in your browser — your files never leave your device.
On the analytics side, ParquetKit competes within Open Source, Developer Tools, GitHub and Data & Analytics — topics that collectively have 631.5k followers on Product Hunt. The dashboard above tracks how ParquetKit performed against the three products that launched closest to it on the same day.
Who hunted ParquetKit?
ParquetKit was hunted by Shun Kimura. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ParquetKit including community comment highlights and product details, visit the product overview.
Shun Kimura