Password, QR Code & Hash Generators: A Practical Guide
How to use WaiHub's password generator, QR code generator, and MD5/SHA hash tool — all in your browser.
Read moreDeveloper tools · Privacy-first
Developer Tools Hub
14 tools in one place — JSON, encoding, JWT, Regex & more. Processed in your browser, not on our servers. English · 中文 · 日本語
WaiHub is a free online developer tools platform that brings essential utilities together in one place. From JSON formatting and Base64 encoding to JWT decoding and regex testing, WaiHub helps developers debug APIs, process data, and solve everyday coding tasks without installing software or creating accounts.
14
Free developer tools
3
Languages supported
0
Signup required
100%
Browser-based
Every tool you need
Search, filter, and open any utility — all processing stays in your browser.
JSON Formatter
Format, validate & beautify JSON
Use now →Base64 Tools
Full Base64 developer toolkit
Use now →URL Encoder/Decoder
URL encode, decode & query parse
Use now →Timestamp Converter
Full Unix timestamp toolkit
Use now →UUID Generator
UUID v4 generate & export
Use now →Hash Generator
MD5 & SHA256 calculator
Use now →QR Code Generator
QR maker for URL & WiFi
Use now →Password Generator
Strong random password online
Use now →Regex Tester
Test & debug regular expressions
Use now →JWT Decoder
Decode JSON Web Tokens
Use now →HTML Encoder
HTML entity encode/decode
Use now →Text Diff
Line-by-line text compare
Use now →Cron Parser
Decode cron expressions
Use now →Color Converter
HEX/RGB/HSL converter
Use now →14 tools available · View full list
Why Choose WaiHub?
Fast
Instant results as you type. No waiting for server responses — everything runs locally in your browser.
Secure
Browser-based processing means your sensitive data stays on your device. No uploads, no storage on our servers.
Privacy First
We do not collect your tool inputs. JSON, JWT tokens, and passwords are processed locally and never sent to us.
Free
All 10 tools are completely free. No signup, no premium tier, no usage limits or hidden fees.
Browser-Based
Works on any modern browser on desktop, tablet, and mobile. No installation or plugins required.
Popular Use Cases
API Development
Format JSON responses, decode JWT tokens, and debug authentication flows during API integration.
Frontend & Backend Integration
Encode URLs, convert timestamps, and validate data formats when connecting frontend and backend systems.
Data Processing
Transform Base64, parse query strings, hash strings, and convert between JSON, YAML, and XML.
JWT Inspection
Decode JWT header and payload, check expiration times, and understand token claims during OAuth debugging.
JSON Formatting
Beautify minified API responses, validate syntax, and explore nested structures with tree view.
Timestamp Conversion
Convert Unix timestamps to readable dates and back — essential for log analysis and timezone debugging.
QR Code Generation
Create scannable QR codes for URLs, WiFi credentials, and contact info for events and marketing.
Tips & tutorials
Guides, tutorials, and best practices for every tool.
Regex for URL Validation
Validate URLs with regex — HTTP/HTTPS patterns, query strings, and when regex is enough vs when to use URL parsers.
Read moreDeveloper Toolkit: URL, Timestamps, UUID & JWT
How to use WaiHub's URL encoder, Unix timestamp converter, UUID generator, and JWT decoder.
Read moreFAQ
Quick answers about pricing, privacy, and how WaiHub works.