DevToolkitUtilities

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ID Generator
Mock Data Generator
Thai CID Generator
Lorem Ipsum
QR Code Generator

Password Generator
Password Hasher
Hash Generator
HMAC Generator
Encryption / Decryption
Secure Share
Key Pair Generator & Converter

Base64 Encoder
URL Encoder / Decoder
JWT Decoder
JWT Builder / Signer
Number Base Converter

JSON Formatter
JSON to TypeScript
JSON to Schema
JSON Compare
CSV ↔ JSON Converter

CSS Gradient Generator
CSS Unit Converter
Color Converter
SEO Toolkit

String Utilities
Regex Tester
Text Diff Tool
Markdown Preview
LINE Message Formatter

Timestamp Converter
Timezone Converter
Cron Expression Reader

Image Converter
Image Resizer
File Compressor

IP Address & Geolocation

SQL Analyzer

DevToolkit

Image Resizer

Batch resize images to exact pixel dimensions, a percentage, or ready-made presets — format is always preserved

Drop images or folders here

Supports PNG, JPEG, WebP