This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
ParquetKit
View, query and convert Parquet files in your browser
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?
Runs locally in the browser is a smart promise, and actually delivering on it without lag is the hard part. Glad to see you pulled it off.
Loaded a hefty Parquet file from a client project and it opened instantly without uploading anywhere, which is exactly what I needed. The SQL workbench is a nice touch for quick spot checks.
Adding support for exporting query results directly to Parquet, JSON, or CSV would be super useful for building quick data pipelines.
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.
ParquetKit was featured in Open Source (68.6k followers), Developer Tools (515.9k followers), GitHub (41.3k followers) and Data & Analytics (5.7k followers) on Product Hunt. Together, these topics include over 117.9k products, making this a competitive space to launch in.
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.
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Shun Kimura