CyberPost Lab - Web Security Testing Tool

Advanced Web Security Testing Tool

CyberPost Lab is a comprehensive Chrome extension designed for security researchers, penetration testers, and web developers to test, encode/decode, and generate security payloads entirely offline.

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Key Features

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HTTP Request Laboratory

Send and analyze HTTP/HTTPS requests with full control over methods, headers, parameters, and body content. View responses in multiple formats and test API endpoints efficiently.

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Encoding & Decoding Tools

Easily encode and decode Base64, URL, HTML entities, and JWT tokens. Convert between different formats with a simple interface designed for security professionals.

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Security Payload Generator

Access a comprehensive library of security testing payloads for XSS, SQL Injection, Command Injection, and many more attack vectors with customizable options.

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Persistent State

Never lose your work - CyberPost Lab automatically saves your tabs, inputs, settings, and responses locally, ensuring everything is preserved between sessions.

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Complete Privacy

Works entirely offline with no data sent to any servers. All operations happen locally in your browser, keeping your sensitive testing data secure.

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Fast & Responsive

Built for performance with a modern, responsive interface that helps security professionals work efficiently without distractions.

See It In Action

Request Editor

Configure every aspect of your HTTP requests with an intuitive interface. Set the URL, method, headers, parameters, and body content with support for different content types.

CyberPost Lab provides a professional environment for crafting precise requests needed for security testing and API exploration.

Response Viewer

Analyze responses with multiple viewing options including raw format, pretty-printed JSON, headers analysis, and HTML preview to thoroughly examine API responses and web content.

Easily identify security vulnerabilities and understand how applications respond to your crafted requests.

CyberPost Lab Response Viewer Screenshot

Payload Toolbox

Generate security testing payloads for various attack vectors with just a few clicks. Copy ready-to-use payloads or customize them to your specific testing requirements.

The built-in encoder/decoder supports essential security testing operations like Base64, URL encoding, and HTML entity conversion.

CyberPost Lab Payload Toolbox Screenshot

Comprehensive Payload Library

CyberPost Lab includes an extensive collection of security testing payloads covering all major web security testing scenarios:

XSS

Cross-Site Scripting

SQL

SQL Injection

CMD

Command Injection

LFI

Local File Inclusion

SSRF

Server-Side Request Forgery

RCE

Remote Code Execution

SSTI

Server-Side Template Injection

XXE

XML External Entity

CRLF

CRLF Injection

JSON

JSON Injection

HOST

Host Header Injection

WLFI

Windows LFI