Description

CrossPost Studio

CrossPost Studio is a self-hosted social media cross-posting application that allows you to draft and schedule posts across multiple platforms without relying on external APIs. Unlike traditional solutions, this application operates without requiring social media API access tokens or OAuth connections, making it ideal for shared hosting environments.

Features

Self-Hosted: Runs entirely on your own server with no external dependencies
No Social Media APIs: No need for API keys, OAuth tokens, or app approvals
Multi-Platform Support: Draft and format content for X (Twitter), LinkedIn, Facebook, and Instagram
Post Scheduling: Schedule posts to be published at specific times
Media Upload: Upload images to accompany your posts (supports up to 4 images per post)
Platform Formatting: Automatic formatting adjustments for different platform requirements (character limits, spacing, etc.)
Manual Publishing: Content is copied to clipboard and manually posted via native platform interfaces
Responsive Design: Works well on both desktop and mobile devices
User Experience: AJAX-powered form submissions with proper feedback
Secure Authentication: Email/password login with secure password hashing
Branded Interface: Custom logo and favicon support for enhanced branding
User Profile Management: Change email and password from within the application
Enhanced Social Posting: One-click posting to social platforms with content auto-filled in native interfaces
Modern Platform Guidelines: Card-based platform-specific guidelines with character counters and best practices
Expanded Platform Support: Added support for Bluesky, Telegram, and Threads with platform-specific formatting
Smart Hashtag Suggestions: Automatic hashtag suggestions based on content keywords with one-click application
Post Templates: Create and reuse content templates for common post types
Hashtag Management: Organize hashtags into customizable sets and apply them to posts
Media Optimization: Automatic image compression and resizing for faster loading and reduced storage
Video Support: Upload and share short videos up to 50MB across supported platforms
Bug Fixes: Resolved JavaScript errors and form submission issues for stable operation
Improved CSS Architecture: Removed all inline styles for better maintainability and fixed modal centering issues
Enhanced Mobile Experience: Updated navigation and layout for better mobile responsiveness
Improved User Interface: Fixed modal display issues and JavaScript functionality for better user experience
Modern Compact Design: Complete UI redesign with contemporary styling, improved spacing, and enhanced user experience
Enhanced Posting Workflow: Open Facebook and Instagram in new windows with content copied to clipboard automatically

Requirements

Web Server: Apache or Nginx
PHP: Version 7.4 or higher
Database: MySQL 5.7 or higher (with JSON support)
File Permissions: Writable uploads directory
Shared Hosting Compatible: Designed to run on cheap shared hosting plans

Installation

Option 1: Manual Installation

Upload all files to your web directory
Create the required directories and make them writable:
- Create an empty directory called uploads and make it writable (chmod 755 or 777 depending on your server setup)
- Create an empty directory called config and make it writable (chmod 755 or 777 depending on your server setup)
Navigate to install.php in your browser
Enter your database connection details
After successful installation, the installer will create a config/db_config.php file
You can now delete install.php for security
Log in with the default credentials: [email protected] / admin123

Option 2: Database Setup

If you prefer to manually set up the database:

Create a database on your server
Import the schema.sql file into your database
Copy includes/db.php to config/db_config.php
Update the database connection parameters in config/db_config.php
Set appropriate file permissions (see below)

File Permissions

For proper operation, ensure these permissions are set:

/uploads directory: writable (typically chmod 755 or 777)
/config directory: writable for installer (remove write permissions after installation for security)

Usage

Creating Posts

Log in to the dashboard
Click “Compose” to create a new post
Write your content in the main text area
Add images using the file upload field (up to 4 images)
Select whether to save as a draft or schedule for later
If scheduling, select a date and time
The platform previews will show how your content will appear on each network

Publishing Posts

Since this application doesn’t connect directly to social media APIs:

Click the “Copy Content” button next to your post
This copies the properly formatted text to your clipboard
Open a new tab and navigate to the social platform you want to post to
Paste the content into the native posting interface
Add your images if needed
Publish the post through the platform’s native interface

Managing Scheduled Posts

Scheduled posts will appear in your dashboard. Posts that are due to be published will show a reminder notification when you load the dashboard page. The system checks for posts due in the last 10 minutes.

Troubleshooting

Database Connection Issues

If you encounter “Access denied” errors during login or installation:

Check your MySQL credentials: Make sure the username and password for your MySQL server are correct.
Default MySQL setup: If using XAMPP/WAMP, the default username is often root with an empty password.
Docker/Custom setups: If you’re using a Docker container or custom MySQL setup, the credentials may differ (default might be username mysql with password mysql).
Create the database: Ensure the specified database name exists in MySQL.
Configuration priority: The application first looks for config/db_config.php (created by installer), then falls back to defaults in includes/db.php.

Common MySQL Connection Solutions:

For XAMPP/WAMP: Use username root with empty password
For MAMP: Use username root with password root (default)
For Docker environments: Check your container documentation for credentials

Security

Passwords are securely hashed using PHP’s password_hash() function
Session management follows secure practices
Proper logout functionality with server-side session destruction
Input validation and sanitization applied where appropriate
File upload validation restricts to image formats only
SQL queries use prepared statements to prevent injection attacks

Architecture

CrossPost Studio follows a simple MVC-like structure:

Root Files: Entry points for the application (index.php, dashboard.php, etc.)
API Directory: Handles backend requests (authentication, posts, media)
Includes Directory: Core functionality and database connections
Assets Directory: Client-side resources (CSS, JavaScript)
Uploads Directory: Stores user-uploaded images

Maintenance

Regularly backup your database
Monitor the uploads directory for storage usage
Update passwords regularly
Keep your server’s PHP and MySQL updated

Customization

The application can be customized by:

Modifying CSS in assets/css/style.css
Adding new platform formatting rules in includes/functions.php
Extending the UI in the dashboard and compose pages
Changing the default content formatting rules
Adding custom logo and favicon by placing files in assets/images/ and updating the HTML references
Managing user profile (email/password) through the Profile page after login

License

This software is proprietary and protected by copyright law. All rights are reserved by the author.

You are granted a limited license to use this software for your personal or internal business purposes only. You may not distribute, sublicense, or sell copies of this software. You may not modify, reverse engineer, or attempt to extract the source code of this software.

For licensing inquiries, please contact the author.

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