{ } Private browser utilities

Developer Tools

Small utilities for common development and debugging tasks. Inputs stay in the current browser tab and are never sent to Boring Tools.

12 tools

JSON FormatterFormat and beautify JSON with readable indentation. Data stays in your browser.JSON ValidatorValidate JSON syntax and locate parsing errors without uploading the data.JSON MinifierRemove unnecessary JSON whitespace after validating the document locally.Base64 Encoder & DecoderEncode UTF-8 text as Base64 or decode Base64 locally in your browser.URL Encoder & DecoderEncode or decode URL components with browser-native percent encoding.JWT DecoderDecode JWT header and payload JSON locally. No token is uploaded or verified by a server.UUID GeneratorGenerate one or many UUID v4 identifiers using the browser cryptography API.Unix Timestamp ConverterConvert Unix timestamps to local and UTC dates, or turn a date into seconds and milliseconds.Password GeneratorGenerate strong random passwords locally with configurable length and character sets.JSON and CSV ConverterConvert tabular JSON and CSV data.QR Code GeneratorCreate a QR code from text or a URL.File Hash GeneratorCalculate SHA checksums locally.

Private tools that work on your device

Each utility opens on its own focused page and processes your input in browser memory. There is no account, upload queue, or server-side file conversion.

Choose the right tool

Start with the task you need to complete rather than a file extension alone. Every tool page explains supported inputs, practical limits, and what happens to the output.