Useless Toolkits
Toolkits for all software developers!
Discover Tools
JSON Playground
JSON editor, validator, and formatter. JSON Playground helps you edit, validate, repair, and format JSON data with UTF-8 support.
Unix Timestamp Converter
Easily convert dates to Unix timestamps and vice versa with our online tool. Accurate and fast conversion for developers and anyone working with Unix time.
URL Encoder/Decoder
Encode URLs for safe web transmission or decode encoded URLs to their original form. Supports all standard URL encoding characters.
Base64 Encoder/Decoder
Supports standard Base64 and URL-safe Base64 encoding for web applications. Convert text to Base64 or decode Base64 strings easily.
ASN.1 Decode Online
Effortlessly decode ASN.1 DER/BER/PEM data directly in your browser. Paste your ASN.1 or upload a file to view the human-readable structure. Free and privacy-focused.
CSS Color Converter & Analyzer
Analyze and convert CSS colors. Get RGB, HSL, LAB, LCH, OKLAB, OKLCH, and HWB values from any CSS color string and convert between color formats.
Discover APIs
QR Code Generator
Generate QR codes instantly with the QR Code Generator API on RapidAPI! Create QR codes for websites, Wi-Fi, promotions, and more.
Random Password Generator
Generate strong, secure passwords instantly with the Random Password Generator API on RapidAPI! Protect your applications and systems with robust, random passwords.
Apple PNG Normalize
Fix distorted images from IPA files! Use the Apple PNG Normalize API on RapidAPI to convert CgBI-encoded PNGs and view extracted app icons and assets correctly.
GitHub-Styled Avatar API
This API generates unique, GitHub-like avatars with customizable options for usernames, colors, and formats.
Apple Developer Certificate Check
Prevent your iOS app from disappearing! Use the Apple Developer Certificate Check API on RapidAPI to quickly validate your certificates and avoid costly build failures.