Free · Private · In-browser

Free Online Data Tools (CSV & JSON Utilities)

TinyTools is a collection of fast, free data utilities that run entirely in your browser. Convert, split, merge, and process CSV and JSON files instantly without uploading anything to a server.

All tools run locally on your device, which means your files stay private and conversions happen instantly.

Free to use • No signup required • No uploads • Runs in your browser

Data conversion and processing

Data Conversion and Processing Tools

These tools help you quickly work with common data formats like CSV and JSON. Whether you are cleaning up spreadsheet exports, transforming API responses, or preparing data for analysis, TinyTools provides simple browser-based utilities that make these tasks fast and easy.

All conversions happen locally in your browser, so your data never leaves your device.

CSV tools online

CSV Tools

Split CSV

Break a large CSV file into smaller files with a fixed number of rows.

 Merge CSV

Combine multiple CSV files into a single CSV file.

 CSV to TSV

Convert comma-separated CSV files into tab-separated format.

JSON tools

JSON Tools

JSON to CSV

Convert JSON arrays of objects into CSV format for use in spreadsheet tools like Excel or Google Sheets.

Why choose us

Why Use TinyTools

Many data conversion tools require uploading files to external servers. TinyTools works differently.

All tools run directly in your browser using client-side processing.

Private

Your files are never uploaded or stored.

Fast

Conversions happen instantly.

Free

All tools are available without signup.

Simple

Each tool focuses on doing one task well.

Use cases

Common Use Cases

TinyTools is useful for developers, analysts, and anyone working with structured data.

Typical uses include:

  • preparing CSV files for database imports
  • converting JSON API responses into spreadsheets
  • splitting large CSV exports
  • merging multiple CSV reports
  • converting between comma-separated and tab-separated formats

Because everything runs locally, these tools can also be used safely with sensitive data.

FAQ

Frequently asked questions

No. Everything runs locally in your browser.
No signup or login is required.
Currently CSV, TSV, and JSON.
Yes. The generated files work with common spreadsheet tools.

More to come

Growing Collection of Data Tools

TinyTools is expanding with additional utilities for working with structured data formats including CSV processors, JSON utilities, and data formatting helpers.