Souus Tools
Sponsor

Data Formats

Local SQLite & Parquet Explorer

Inspect SQLite databases and preview Parquet files entirely in your browser, with read-only SQL queries and CSV or JSON export.

Free to use No sign-up Runs in your browser

Tool workspace

Files stay in this browser tab. The tool does not upload database contents, queries, or exported rows.

Choose a .sqlite, .sqlite3, or .db file up to 100 MB.

What is a local SQLite and Parquet explorer?

This browser-only data explorer opens an existing SQLite database or Apache Parquet file without sending it to a server. SQLite mode lists tables, views, and columns, then executes guarded inspection queries. Parquet mode reads file metadata and a bounded row preview through hyparquet. Results can be downloaded as CSV or JSON.

How to inspect a database or Parquet file

  1. 1Choose SQLite query mode or Parquet preview mode before selecting a local file.
  2. 2For SQLite, inspect the table list and schema, then run one read-only SELECT, PRAGMA, or EXPLAIN statement.
  3. 3For Parquet, choose a preview limit and review the physical and logical column types.
  4. 4Check the rendered rows and download the current result as CSV or JSON.
  5. 5Clear the loaded file when working with sensitive or shared devices.

Common local data inspection tasks

Review an application database

Open a copied SQLite file, discover its tables, and inspect records without installing a desktop database client.

Validate a Parquet delivery

Confirm row count, column names, physical types, logical annotations, and representative values before a pipeline consumes the file.

Extract a small troubleshooting sample

Run a bounded SQLite query or select a Parquet preview and export the visible rows for further analysis.

Frequently asked questions

Are database and Parquet files uploaded?

No. File bytes are read by JavaScript in the current browser tab. Nothing is intentionally uploaded or persisted by this tool.

Can a SQLite query modify the loaded database?

The query guard accepts only one SELECT, allowlisted read-only PRAGMA, or EXPLAIN statement. Mutating SQL and PRAGMA assignments are rejected before execution. The in-browser database is also an in-memory copy of the selected file.

Does the Parquet preview read every row?

No. Metadata supplies the total row count and schema, while hyparquet decodes only the requested preview range. The browser still needs access to the selected local file and may use significant memory for very wide rows.