As developers, we copy and paste dozens of times a day — code snippets, API keys, terminal commands, JSON responses, regex patterns. But traditional clipboard managers treat everything as plain text, making it hard to find what you need when you need it.

PasteRheo changes that with AI-powered content detection and developer-focused features. Here's how it becomes your coding companion.

Smart Code Detection

PasteRheo automatically recognizes 50+ programming languages and applies syntax highlighting instantly. Copy a Python function, a TypeScript interface, or a SQL query — it knows what it is.

What It Detects

Programming Languages: JavaScript, TypeScript, Python, Rust, Go, Java, C++, Swift, Kotlin, and more
Markup & Data: JSON, XML, YAML, TOML, Markdown, HTML, CSS
Shell Scripts: Bash, PowerShell, Zsh commands
Config Files: .env, nginx.conf, docker-compose.yml
Regular Expressions: With syntax highlighting and interactive testing

When you preview code in PasteRheo, you get Monaco Editor — the same editor that powers VS Code — with full syntax highlighting and language-specific formatting.

Organizing Code Snippets with Pin Groups

The real power comes from Pin Groups. Think of them as smart folders for your clipboard history.

Create Specialized Collections

API Keys & Tokens: Pin all your development credentials in one secure place
Reusable Snippets: Common functions, utility code, boilerplate templates
Project-Specific: Keep snippets for your current project separate from others
Learning Notes: Save code examples while learning a new language or framework

Each group can have a custom name, color, and icon — making it easy to visually organize your code library.

How to Pin

Copy your code snippet
Right-click the item in PasteRheo
Select "Pin to Group" and choose or create a group
Access it anytime with Cmd+[ / Cmd+] to switch between groups

Secure API Key Management

API keys, tokens, and credentials are sensitive. PasteRheo handles them with care:

Encryption by Default

Database Encryption: All clipboard history is stored in an encrypted SQLite database (SQLCipher)
Image Encryption: Screenshots containing sensitive data are encrypted with AES-256-GCM
Keychain Integration: Encryption keys are stored in your system keychain, never in plain text

Smart Detection

PasteRheo recognizes common credential formats:

JWT Tokens: Automatically decodes and shows expiration status
API Keys: Detects patterns like sk-..., ghp_..., AKIA...
Environment Variables: Recognizes .env format
Base64 Encoded: Automatically decodes and shows content type

Best Practices

Pin Credentials: Create a "Credentials" group for all API keys
Set Retention: Configure history retention in Settings to auto-delete old items
Exclude Apps: Add password managers to the exclusion list to avoid duplicates
Use Paste as Plain Text: When pasting credentials, use Shift+Enter to avoid formatting issues

Developer-Friendly Previews

PasteRheo's preview window is built for developers:

Code Preview Features

Syntax Highlighting: Monaco Editor with 50+ language support
Line Numbers: Easy reference for code snippets
Copy as Markdown: Convert code to markdown format with one click
Quick Edit: Open in the built-in editor to modify before pasting

Special Content Previews

JSON & XML: Formatted and syntax-highlighted, making API responses readable

Regular Expressions: Interactive testing — paste test strings and see matches highlighted in real-time

Colors: Copy #3B82F6 and see the color swatch, plus conversions to RGB, HSL, and OKLCH

Base64: Automatically decodes and shows if it's an image, text, or binary data

Math Expressions: Copy sqrt(144) + 2^3 and see the result instantly

Timestamps: Unix timestamps are converted to human-readable dates with timezone info

IP Addresses: Identifies IPv4/IPv6 and shows if it's private, public, or loopback

Cron Expressions: Shows human-readable description like "Every day at 3:00 AM"

Productivity Workflows

1. Quick Snippet Library

Create Pin groups for common tasks:

Error Handling: Try-catch blocks, error messages
Database Queries: Common SQL patterns
API Calls: Fetch/axios templates with different methods
Testing: Jest/Vitest test templates

Access them instantly without leaving your IDE.

2. Multi-Paste for Forms

Working with API documentation? Use Paste Stack:

Copy multiple code examples in sequence
Press Cmd+Shift+S to enter Paste Stack mode
Press Cmd+V repeatedly to paste each item in order

Perfect for filling out multi-field forms or inserting multiple snippets.

3. Code Review Workflow

Reviewing pull requests? Copy interesting snippets as you go:

PasteRheo automatically detects the language
Pin important findings to a "Review Notes" group
Add custom aliases to each snippet for context
Export or share your findings later

4. Learning & Documentation

Building a personal knowledge base:

Copy code examples from documentation
Pin them to topic-specific groups (e.g., "React Hooks", "Rust Ownership")
Add aliases to explain what each snippet does
Search across all your saved examples instantly

Keyboard Shortcuts for Speed

PasteRheo is designed for keyboard-first workflows:

Alt+V: Open PasteRheo panel
Cmd+1-9: Paste the 1st-9th item instantly
Cmd+Shift+Z: Paste the previous item without opening the panel
Cmd+[ / Cmd+]: Switch between Pin groups
Space: Preview selected item
Cmd+E: Edit selected item
Enter: Paste with formatting
Shift+Enter: Paste as plain text

Privacy & Security

For developers handling sensitive data:

Local-First: Everything stays on your device by default
No Cloud Sync: Your code and credentials never leave your machine (iCloud sync is optional)
Encrypted Storage: Database and images are encrypted at rest
App Exclusion: Exclude password managers, terminals, or any app from being monitored
Auto-Delete: Set retention periods to automatically clean up old items

Real-World Example

Here's a typical workflow:

Morning Setup: Copy your database connection string, API keys, and common imports
Pin Them: Create a "Daily Dev" group and pin all of them
During Development:
- Copy error messages to search Stack Overflow
- Copy API responses to analyze structure
- Copy utility functions from other projects
Code Review: Copy interesting patterns and pin to "Learning" group
End of Day: Review your clipboard history, pin anything useful, let the rest auto-delete

Getting Started

Download PasteRheo from our website
Grant Accessibility Permission (required for clipboard monitoring)
Set Up Pin Groups: Create groups for your common use cases
Configure Shortcuts: Customize keyboard shortcuts in Settings
Start Copying: PasteRheo will automatically organize everything

Tips for Developers

Use Aliases: Rename snippets with descriptive names like "JWT decode function" or "Postgres connection pool"
Color Code Groups: Use different colors for different projects or languages
Search Everything: Use the search bar to find any snippet instantly — it searches content, aliases, and even code comments
Drag & Drop: Drag code snippets directly from PasteRheo into your editor
Exclude Sensitive Apps: Add your password manager and secure terminals to the exclusion list

Conclusion

PasteRheo transforms your clipboard from a temporary buffer into a powerful code management tool. With AI-powered detection, encrypted storage, and developer-focused features, it's the missing piece in your development workflow.

Stop losing code snippets. Stop searching through Slack for that API key. Start using PasteRheo.

Download now and reclaim your clipboard.