DataWorkbench
All Tools

All Tools (41)

01JSON Formatter & Validator02JSON Path Builder03JWT Decoder04Base64 Encode / Decode05URL Encode / Decode06Unix Timestamp Converter07SQL Formatter08CSV ↔ JSON Converter09CSV Duplicate Processor10Markdown → HTML Converter11Regex Tester12HTML Formatter / Minifier13Character & Byte Counter14Japanese Era ↔ Gregorian Converter15Katakana ↔ Hiragana Converter16Japan Postal Code Lookup17Character Encoding Inspector (UTF-8)18XML ↔ JSON Converter19YAML ↔ JSON Converter20HTML Entity Encoder / Decoder21SQL IN Clause Generator22Date Difference Calculator23Japan Phone Number Formatter24CSV Column Extractor25CSV Merger26Text / JSON Diff Viewer27SQL INSERT Generator28SQL Function Reference29SQL Query Analyzer30Business Day Calculator31Power Query Code Generator32Japan Address Splitter33UUID Generator34Hash Generator (SHA-256 / SHA-512)35Number Base Converter (2 / 8 / 10 / 16)36Cron Expression Parser37Color Code Converter (HEX / RGB / HSL)38QR Code Generator39Image Resizer40Image Compressor41PDF Merger

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About

About DataWorkbench

Overview

DataWorkbench is a free collection of data conversion and formatting tools that run entirely in your browser.

AI-powered data processing services have become widely available, but many process your input on their servers — and depending on their terms of service, that data may be used for service improvement or machine learning.

Because your input data is never sent to a server, even data containing confidential business information or personal information can be processed without leaving your device.

41 tools — including JSON formatter, Base64, JWT, CSV converter, and more — are available free of charge.

Concepts

  • ◆

    Your data never leaves the browser

    All processing happens within your browser. Input data is never sent to any server.

  • ◆

    Tools for every data task

    JSON formatting, CSV conversion, date calculations, postal code lookup, and more — covering the data tasks you reach for regularly. If you're stuck, you'll likely find what you need here.

  • ◆

    No sign-up, no install

    No account creation or app installation required. Paste and click. If you have a browser, you can use it right now.

Operator Info

Service
DataWorkbench
Launched
2026
Contact
Contact form