replit.md

Image Upscaler

Overview

This is an AI-powered image upscaling web application that allows users to upscale images by 2x, 4x, 6x, or 8x magnification. The application is a static HTML/CSS/JavaScript site based on the Qoc Upscaler.

Project Type

• Type: Static Website (Frontend Only)
• Languages: HTML, CSS, JavaScript
• No Backend: This is a pure client-side application with no server-side processing

Project Architecture

• Server: Python's built-in HTTP server
• Port: 5000 (configured to bind to 0.0.0.0)
• Deployment: Configured for autoscale deployment (static site)

Key Files

• index.html - Main application page with modern UI design
• new-design.css - Custom CSS for the redesigned interface
• jsnew_image-upscaler.js - Core image upscaling logic
• js_free-online-image-upscaler.js - Upscaler functionality
• js_quene.js - Queue management for batch processing
• CSS files: css.css, style.css, local.css, all.min.css

Features

• Drag and drop image upload
• Multiple magnification levels (2x, 4x, 6x, 8x)
• Advanced upscale options: AI Strength, Clarity, Sharpness, Color Improvement, Resemblance
• Side-by-side preview popup after enhancement
• Queue system for batch processing
• User-controlled download (preview first, download on button click)
• Mobile-friendly interface
• Modern gradient loading animation
• Interactive preview modal with comparison view

UI Design

• Theme: Modern dark theme with purple/pink gradient accents
• Typography: Space Grotesk font family
• Styling: Tailwind CSS with custom color palette
• Upload Area: Large drag-and-drop zone with cloud icon
• Options: Clean dropdown selectors for resolution and file format
• No Header: Streamlined design without navigation header
• No Quality Option: Simplified interface with resolution and format only

Recent Changes

September 30, 2025 - Added Advanced Upscale Options

• Added five new slider controls: AI Strength, Clarity, Sharpness, Color Improvement, and Resemblance
• Sliders feature purple/pink gradient styling matching the app theme
• Real-time value display updates as sliders move (0-100%)
• Gradient track fill animates with slider position for visual feedback
• JavaScript stores slider values via window.upscaleOptions.getOptions() for future API integration
• Current backend API only supports magnification, but UI is ready for enhanced functionality
• All changes reviewed and approved by architect

September 30, 2025 - Fixed Scrolling Bug After Popup Close

• Fixed critical bug where website became non-scrollable after closing preview popup
• Root cause: closeMessageBox() function was setting overflow='hidden' but never restoring it
• Added overflow='auto' restoration to closeMessageBox() function
• Added overflow restoration to all preview popup close handlers (close button, new image button, overlay click)
• Changes reviewed and approved by architect
• Website now properly restores scrolling functionality after all popup interactions

September 30, 2025 - Preview Popup Modal Implementation

• Created new popup modal that displays after image enhancement
• Side-by-side comparison shows original vs enhanced images
• Displays resolutions for both images
• Purple/pink gradient divider between images matching theme
• Download button with proper filename (enhanced_{magnification}x.png)
• New Image button to quickly upload another file
• Close button and overlay click to dismiss popup
• Mobile responsive design with stacked layout
• Event handlers properly initialized to prevent duplicates
• All changes reviewed and approved by architect

September 30, 2025 - Loading Popup Redesign & Download Behavior

• Redesigned loading popup with modern CSS gradient spinner (purple/pink theme)
• Replaced GIF spinner with animated conic-gradient CSS spinner
• Improved loading text with better typography and messaging
• Disabled automatic download after image enhancement
• Preview now shows first, user must click download button to save
• Verified side-by-side comparison preview displays correctly
• All changes reviewed and approved by architect

September 30, 2025 - Replit Environment Setup (Fresh GitHub Import)

• Python 3.11 module installed for serving static files
• Workflow configured to run HTTP server on port 5000 (bound to 0.0.0.0)
• Deployment configured for autoscale deployment (static site)
• .gitignore already includes Python-related files
• Application tested and verified working perfectly in Replit environment
• All resources loading correctly (HTML, CSS, JavaScript files)
• Modern dark theme UI displaying correctly with purple/pink gradient accents