TechDiary IT Utility Tools

JSON Formatter

Format and validate JSON data for easy viewing and editing

Format Popular

HTML Preview Tool

Real-time preview of HTML, CSS, and JavaScript code effects

Preview

Password Generator

Generate secure, strong random passwords

Security

UUID Generator

Quickly generate UUID/GUID identifiers

Generator

Nine-Grid Maker

Split images into a nine-grid, perfect for social media posts

Image

Base64 Converter

Convert between text and Base64 encoding

Converter

Emoji Picker

Browse and copy emojis with search support

Utility Fun

Fun Math Adventure

An interactive game that makes math learning fun

Games

Cover Image Maker

Design beautiful article covers and social media images

Image New

Subtitle Screenshot Generator

Add subtitles to images and easily create memes

Image

Color Picker & Converter

Pick colors, convert between formats, generate palettes and gradients

Converter New

Timestamp Converter

Convert between Unix timestamp and date/time, convenient for developers

Converter New

Infinite Shooting Game

2D shooting survival game, challenge yourself, keep upgrading, see how long you can last

Games New

Infinite Defense Game

2D tower defense strategy game, upgrade equipment, fend off enemies, enjoy random map battles

Games Popular

Glyph Caster

Draw mystical glyphs to cast magic, fend off enemy attacks, experience unique magical combat

Games New

Sphere Engineer (Classic)

Create and maintain your micro-ecosystem, observe interactions and ecological balance

Games

Sphere Engineer (Enhanced)

Upgraded ecosystem simulator with richer species selection and finer ecological balance mechanics

Games Upgraded

Number Slide Puzzle

Classic sliding puzzle game to exercise logical thinking, supports 3x3 and 4x4 modes with built-in smart auto-solve demo

Games New

SVG Workflow Editor

Visually create and edit SVG workflow diagrams, supporting node connections, style customization, and export

Format New