01On-site
T
Text Cleaner and Single-line Converter
Convert multiline strings to one line, join lines directly, normalize whitespace, remove empty lines, or trim every line.
Open Tool→
RAINLIB / LOCAL UTILITIES
Keep the busywork in your browser
Open-and-use text, encoding, and debugging utilities. On-site processing stays local and never asks you to create a project first.
Local processing
Your input is not uploaded to a server to complete the conversion.
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QUICK OPEN
Frequently needed operations
UTILITY INDEX / TOOL CATALOG
Available tools
11 results
02On-site
🎨
OKLCH Color Space Converter
A premium designer utility to interactively convert between HEX, RGB, and OKLCH colors, mapping directly to RainLib's design token palette.
Open Tool→
03On-site
📋
JSON Formatter & Tree Viewer
Format, validate, minify, and explore JSON structures with a responsive interactive collapsible tree view.
Open Tool→
04On-site
🔑
Secure Password Generator
Generate highly secure, random passwords or passphrases with granular complexity controls and real-time entropy metrics.
Open Tool→
05On-site
🪙
JWT Decoder & Debugger
Decode JSON Web Tokens (JWT) in real-time, validate claim parameters, and cryptographically verify signatures using Web Crypto API.
Open Tool→
06On-site
🗜️
String Compression & Base Converter
An advanced utility to compress strings (Gzip/Deflate) and perform conversions between Binary, Hex, Decimal, and UTF-8 formats.
Open Tool→
07On-site
🖼️
Base64 Image & Text Processor
Encode and decode strings to/from Base64, and dynamically convert images to Base64 strings (with CSS/HTML markup) and vice versa.
Open Tool→
08On-site
🛡️
Crypto & Hashing Toolkit
Perform symmetric key encryption/decryption (AES, DES, TripleDES, RC4, Rabbit) and generate common cryptographic hash checksums (MD5, SHA-1, SHA-256, SHA-512, HMAC).
Open Tool→
09On-siteBeta
📡
WebRTC Lab
Browser-based peer-to-peer testing sandbox matching WebRTC tutorial chapters, including manual signaling and getUserMedia examples.
Open Tool→
10External
🔍
WebRTC Internals Guide
Explanations and guidelines for Chrome's built-in diagnosis page (accessible via chrome://webrtc-internals).
Visit↗
11External
📊
Mermaid Live Editor
Edit and preview Mermaid charts in real-time. Ideal for debugging sequences, flowcharts, and packets in blog posts.
Visit↗