JSON & JSON Lines
Tree, Table and Raw views, path navigation, validation and export.
Fast · Local · Focused
JSONJet
Explore faster.
Open huge JSON files, spreadsheets, Parquet datasets, SQLite databases, SQL dumps, and logs in one fast desktop app. Find what matters, inspect structure, and export clean data without touching your originals.
Free to download · No account required · Files stay on your device
Explore the toolkit
A closer look at your data.
Open, navigate, inspect and export a wide range of data files—all from one focused desktop workspace.
Big data, without the waitJSONJet reads progressively, so you can inspect large files without first rendering the entire document.
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Progressive reading · Large files
One app, many formats
Open the files you already work with.
JSONJet detects supported formats and chooses a useful starting view, so you can inspect a file without setting up another tool first.
Delimited data
Inspect rows, select delimiters, filter columns and validate structure.
Spreadsheets
Browse workbook sheets and explore them as tables.
Parquet
Browse columnar datasets and inspect schema and row groups.
SQLite
Browse database tables and schema without running queries.
SQL dumps
Inspect backup structures and table data; SQL is not executed.
Text & logs
Read line-numbered text, search quickly and summarize real log levels.
Three useful views
Switch between nested structure, tabular records and raw text where supported.
Privacy is a feature
Your data belongs
Your data belongs
on your device.
JSONJet is a desktop viewer designed to inspect sensitive exports, application data, logs and database backups without uploading the files to our servers.
Local-first by architectureNo account · No file uploads
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Local file processing
Your opened file content stays on your computer. JSONJet does not upload files or send their contents to an analytics service.
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Read-only by design
JSONJet never edits or overwrites the original file. Exports create a separate output file.
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SQL is inspected, not executed
SQL dumps and SQLite contents can be inspected without running SQL statements from the files.
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No telemetry by design
JSONJet does not include app-usage analytics. Online requests are limited to optional release/update checks, public product information and Pro license operations.
Get started
A better way to
A better way to
look through data.
Download JSONJet for your desktop. Start with Free, open your files locally, and use the tools you need—without creating an account.
Keep it moving
Support Development
JSONJet is built independently. If it helps you work with data more comfortably, a small contribution helps fund continued development.
Support Development