CONCRETE EXAMPLE
Parquet → preview
BEFORE
→metrics.parquet
AFTER
Schema + first 100 rows + CSV export
ONLINE TOOL
Parquet viewer
Inspect the schema and first rows of a local Parquet file, then export it to CSV.
Local processingNo account required
Your data stays in the browser
Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.
Limitations to know
- First use downloads DuckDB-WASM.
- The 200 MB limit helps avoid exhausting memory on modest browsers.
A straightforward workflow.
- 1Prepare the required input and choose useful options.
- 2Review previews, warnings and limitations before export.
- 3Download a new copy or report: the original stays unchanged.
Frequently asked questions
Are my files uploaded to WorkToolset?
No. This tool runs locally in your browser.
Is my original file modified?
No. WorkToolset creates a new copy or export.
Do I need an account?
No for this free tool. Accounts are mainly used for favorites, presets and future workflows.