Introduction
Easy REST Client is a powerful web-based API client tool that requires zero installation. It provides developers with an intuitive interface for testing RESTful APIs with full request/response capabilities. The tool features built-in token decoding, request collection management, and support for multiple authentication schemes. All data is stored locally in your browser, ensuring privacy and immediate access without server dependencies.
ScreenShot:
Access & Download:
https://apps.deltaframework.net/easyrestclient/
1. Product Overview
Core Philosophy
Zero Installation: Runs entirely in the browser
Privacy-First: All data stored locally (localStorage)
Developer-Centric: Built by developers for developers
Open Standards: Uses standard Fetch API, no proprietary protocols
2. Technical Specifications
Browser Compatibility
Chrome 80+: Full support
Firefox 75+: Full support
Safari 13.1+: Full support
Edge 80+: Full support
Opera 67+: Full support
2.1 Performance Characteristics
HTTP Requests: Less than 100ms overhead
Token Decoding: Less than 50ms for JWT
UI Responsiveness: 60 FPS
Memory Usage: Approximately 10-15MB
*May vary depending on hardware and resource.
2.2 Security Features
Client-Side Security
No Data Sent to Servers: All operations local
CORS Handling: Proper CORS mode in requests
Token Security: Client-side only, never transmitted
Password Protection: Basic auth passwords blurred by default
Privacy Features
Zero Telemetry: No analytics without consent
Cookie Control: GDPR-compliant consent system
Export Control: Full data ownership
Local Storage: All request data, headers, and collections are stored locally and never transmitted to our servers
Third-Party Sharing: Google Analytics data is subject to Google's privacy policy; no other data is shared
Cookie Usage: Only essential cookies for application functionality; analytics cookies require consent
3. Functional Features
3.1 Core Functionality
HTTP Request Handling
Methods Supported: GET, POST, PUT, PATCH, DELETE, OPTIONS, HEAD
Request Body: Raw JSON input with syntax highlighting
Headers Management: Dynamic header addition/removal
Response Processing
Format Detection: Automatic JSON parsing
Syntax Highlighting: Colored response formatting
Response Headers: Full header display
Timing Information: Request duration measurement
Size Calculation: Response size in bytes/KB/MB
3.2 Authentication Systems
Bearer Token: Standard RFC 6750 - Auto-detection, JWT decoding
Basic Auth: RFC 7617 - Base64 encoding, password blur
API Key: Custom headers - Configurable header name
Digest Auth: RFC 7616 - Full parameter support
OAuth 2.0: RFC 6749 - Multiple token types
Custom Auth: Flexible - Any header/value combination
3.3 Token Decoder
Supported Token Types
JWT (JSON Web Tokens): Header, Payload, Signature separation, Expiration validation
Basic Authentication: Username/password decoding, Password security blurring
MAC Tokens: ID/Nonce/MAC component separation, Base64 detection
OAuth Tokens: Access/Refresh token detection, Character pattern analysis
Digest Authentication: Full parameter parsing, Algorithm detection
Decoding Capabilities
Auto-detection: Identifies token type automatically
Structure Analysis: Validates token structure
Security Warnings: Flags insecure tokens
Copy Functionality: Easy copying of decoded parts
Validation Checks: Expiration, algorithm, format
3.4 Request Collections
Collection Management
Group Organization: Hierarchical grouping system
Request Saving: Save full request configuration
Import/Export: JSON-based backup/restore
Storage Structure
{
"groupName": {
"requestName": {
"url": "https://api.example.com/endpoint",
"method": "GET",
"payload": "{}",
"headers": {},
"timestamp": "2026-01-09T10:30:00Z",
"requestCollectionGroup": "groupName"
}
}
}
3.5 UI/UX Features
Theme System
Light/Dark Modes: System-aware or manual
Persistent Preference: Remembers user choice
Smooth Transitions: CSS-powered animations
Contrast Compliance: WCAG AA compliant
Accessibility Features
Keyboard Navigation: Full keyboard support
Screen Reader Ready: ARIA labels throughout
High Contrast: Theme-aware contrast ratios
Responsive Design
Mobile-First: Works on phones, tablets, desktops
Adaptive Layout: Reflows based on screen size
Touch-Friendly: Large touch targets
Orientation Support: Portrait and landscape
4. User Guide
4.1 Getting Started
Quick Start
1. Open the Application: Navigate to the Easy REST Client URL
2. Enter Your API Endpoint: Paste URL in "Endpoint URL" field
3. Select HTTP Method: Choose from dropdown (default: GET)
4. Add Headers (Optional): Click "Add Header" for custom headers
5. Send Request: Click "Send" or press Ctrl+Enter
First Time Setup
1. Theme Selection: Toggle dark/light theme in header
2. Zoom Adjustment: Set comfortable zoom level
3. Request Collections: Create your first group
4.2 Making API Requests
Basic Request
GET https://subdomain.domain.com/posts/1
Steps:
1. Select "GET" from method dropdown
2. Paste URL in endpoint field
3. Click "Send" button
4. View response in right panel
POST Request with JSON
{
"title": "foo",
"body": "bar",
"userId": 1
}
Steps:
1. Select "POST" method
2. Enter URL
3. Paste JSON in "Request Body" field
4. Ensure "Content-Type: application/json" header is present
5. Send request
Adding Custom Headers
1. Click "Add Header" button
2. Enter header name (e.g., "X-API-Key")
3. Enter header value
4. Repeat as needed
4.3 Authentication Setup
Bearer Token
1. Click "Add Header" dropdown
2. Select "Bearer Token"
3. Enter your token
4. Header automatically added: Authorization: Bearer token
Basic Authentication
1. Select "Basic Authentication" from auth scheme
2. Enter username and password
3. Header auto-generated: Authorization: Basic base64
API Key
1. Select "API Key" from auth scheme
2. Specify header name (default: X-API-Key)
3. Enter API key value
4.4 Using the Token Decoder
Decoding JWT Tokens
1. Add Authorization header with Bearer token
2. Click "Decode" button (key icon) next to header
3. View decoded:
- Header (algorithm, token type)
- Payload (claims, expiration)
- Signature
- Validation status
Decoding Basic Auth
1. Add Basic Authentication header
2. Click decode button
3. View decoded username and password
4. Toggle password visibility with eye icon
Manual Token Decoding
1. Copy any token to clipboard
2. Click "Paste" in payload section
3. Click decode button from payload actions
4. View analysis and decoded components
4.5 Managing Request Collections
Creating Collections
1. Create Group: Click "Add" in Request Collection panel, Enter group name
2. Save Request: Configure your request, Click "Save" button, Enter request name, Select target group
Organizing Requests
Drag & Drop: Reorder within groups
Multiple Groups: Create logical separations
Default Group: Built-in "Default" group
Export/Import
Export:
1. Click "Export" in Request Collection
2. Download JSON file
3. Store backup safely
Import:
1. Click "Import" button
2. Select JSON file
3. Collections merged with existing
4.6 Productivity Features
Keyboard Shortcuts
Alt+1: Toggle Request Collection - Global
Alt+2: Toggle Request panel - Global
Alt+3: Toggle Response panel - Global
Alt+4: Toggle Status Codes - Global
Alt+C: Collapse all cards - Global
Alt+E: Expand all cards - Global
Alt+D: Decode token - Header focused
Esc: Close dialogs - Dialog open
Quick Actions
Right-click request: Context menu
Drag URL: Quick URL input
4.7 Advanced Features
Custom Authentication Schemes
1. Select "Custom Authorization"
2. Define custom header name
3. Enter authorization value
4. Supports any authentication pattern
Digest Authentication Configuration
1. Select "Digest Authentication"
2. Fill in parameters:
- Username
- Realm (optional)
- Nonce (server-provided)
- URI
- Response (calculated)
- QOP, NC, CNonce
OAuth 2.0 Setup
1. Select "OAuth 2.0"
2. Choose token type (Bearer, MAC, JWT)
3. Enter access token
4. Configure additional parameters as needed
4.8 Troubleshooting
Common Issues & Solutions
Issue: CORS Errors - Access-Control-Allow-Origin header missing
Solution:
1. Use browser extension for CORS (development only)
2. Test with CORS-enabled endpoints
3. Use proxy for testing
Issue: Invalid JSON Response - Unexpected token in JSON at position 0
Solution:
1. Check API returns valid JSON
2. Verify Content-Type header
3. Use "Preview" tab to see raw response
Issue: Token Decoding Fails - Unable to decode token
Solution:
1. Verify token is correctly formatted
2. Check if token is expired
3. Try manual base64 decoding
Performance Optimization
1. Clear Old Requests: Regularly clean response history
2. Limit Headers: Remove unnecessary headers
3. Use Groups: Organize to reduce search time
4. Export Collections: Backup and clear old data
5. Technical Reference
5.1 Storage Schema
localStorage Keys
restClientTheme: Theme preference - "light" or "dark"
requestCollectionGroups: All collections - JSON object
currentRequestCollectionGroup: Active group - String
cardCollapseStates: UI state - JSON object
Data Persistence
Automatic Save: Changes saved immediately
Manual Export: Full control over backups
Import Safety: Merge strategy prevents data loss
Version Compatibility: Forward-compatible storage
6. Best Practices
6.1 Security Best Practices
1. Never Store Production Tokens: Use test tokens only
2. Regular Export Backups: Protect your request collections
3. Clear Browser Data: When using shared computers
4. Use Incognito Mode: For sensitive API testing
6.2 Performance Best Practices
1. Group Similar Requests: Logical organization
2. Use Default Headers: Set common headers once
3. Clean Response History: Regularly clear old responses
4. Optimize Payload Size: Test with realistic data sizes
6.3 Development Workflow
1. Local Development: Test against localhost APIs
2. Staging Testing: Use staging environment tokens
3. Production Verification: Final validation only
4. Documentation: Save successful requests as documentation
7. FAQ
Q: Is my data secure?
A: All data is stored locally in your browser's localStorage. No data is sent to any server except the APIs you explicitly call.
Q: Can I use this for production APIs?
A: While technically possible, we recommend using dedicated tools for production. Easy REST Client is ideal for development, testing, and debugging.
Q: How do I report bugs or request features?
A: Contact through thirufactory.com
Q: Is there a limit to saved requests?
A: Limited only by browser localStorage capacity (typically 5-10MB per domain).
Q: Can I use custom HTTP methods?
A: Currently supports standard HTTP methods. Custom methods can be added via feature request.
8. Support
Getting Help
Contact: Contact
9. Legal & Compliance
License
Easy REST Client is proprietary software. All rights reserved by thirufactory.com.
Privacy Policy
Refer:
Privacy Policy
