Development

JSONPath Evaluator

Accurately extract data from JSON documents using JSONPath expressions. Supports recursive queries and filter expressions.

Code to Image Tool

Generate beautiful code screenshots with one click, supporting multi-language syntax highlighting and customizable themes.

Java Regex Tester

Test Java regular expressions online. Real-time match verification and capture group extraction for faster debugging and development.

C/C++ Code Formatter & Beautifier

Free online C/C++ code formatter and beautifier. Quickly standardize indentation, brace styles, and format your C and C++ code instantly.

Kubernetes Image Mirror Finder

Find China mirror URLs for Kubernetes components to fix slow access to official registries.

UUID Format Converter & Validator

Professionally handle UUID format conversions and validity checks. Supports multiple formats including standard, pure hex, and URN.

Golang Regex Tester

An online regex tester designed for Go developers. Validate RE2 syntax rules and view match results and capture groups in real-time.

Top-Level Domain (TLD) Directory

Search 900+ top-level domain suffixes worldwide in one place, including type, managing organization, and registration restrictions.

Character Encoding Detector

Quickly identify text encoding types and fix gibberish text.

Shannon Entropy Calculator

Calculate the information entropy of text or data sequences to evaluate uncertainty and randomness.

Font Awesome Icon Finder

Quickly find Font Awesome icon names, CSS class names, and Unicode values.

JSON to JSON Schema Converter

Automatically convert JSON data structures into JSON Schema definitions for seamless data validation and API documentation generation.

System and Browser Info Checker

Instantly check your client operating system, browser version, screen resolution, and other detailed system parameters in real time.

Cron Expression Generator

Generate Cron expressions online and visually configure scheduled tasks.

Mermaid Chart Generator

Generate Mermaid chart code online. Supports multiple types including flowcharts and sequence diagrams.

Random File Generator

Generate random files of any size and format on demand, including text and binary data formats.

HTML Table Generator

Create HTML table code visually with drag-and-drop. Merge cells, customize styles, and copy the code in one click.

JSON Minifier

Remove unnecessary whitespace from JSON and minify formatted data into a compact single line to boost transfer efficiency.

CSS Selector Tester

Verify CSS selector matches in HTML and quickly locate elements.

Excel to JSON Converter Online

Convert copied Excel cells into row-based JSON objects or arrays