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pnger/ROADMAP.md

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PNGer Feature Roadmap

Current Features ✅

  • ✅ Basic image upload (file picker)
  • ✅ Width/height resizing
  • ✅ Aspect ratio control (inside/cover)
  • ✅ Crop positioning (9 positions)
  • ✅ Format conversion (PNG, WebP, JPEG)
  • ✅ Quality adjustment (10-100)
  • ✅ Direct download (no server storage)
  • ✅ Docker deployment
  • ✅ Live Preview - Real-time side-by-side comparison with file size analysis
  • ✅ Dark/Light Mode - Theme toggle for better PNG transparency inspection
  • ✅ Modern UI - Sleek design with smooth transitions and visual feedback

Phase 1: Enhanced User Experience (Priority: HIGH)

1.1 Live Preview 🎯 ✅ COMPLETED

Why: Immediate visual feedback dramatically improves UX Effort: Medium | Impact: High

  • Real-time preview of transformations before download
  • Side-by-side comparison (original vs transformed)
  • Show file size reduction/increase
  • Display actual dimensions of output
  • Preview updates on parameter change (debounced)
  • Dark/light mode for transparency inspection

Technical approach:

  • ✅ Client-side preview using Canvas API for instant feedback
  • ✅ Debounced updates (300ms) for smooth performance
  • ✅ Base64 size estimation with color-coded savings indicator

1.2 Drag & Drop Interface 🎯 NEXT PRIORITY

Why: More intuitive than file picker Effort: Low | Impact: Medium

  • Drag & drop zone for image upload
  • Visual feedback on drag over
  • Support multiple files (batch processing)
  • Show thumbnail of uploaded image
  • Paste from clipboard support (Ctrl+V)

Implementation notes:

  • Add drop zone with dashed border styling
  • Listen for dragover, dragleave, drop events
  • Extract files from dataTransfer.files
  • Add paste event listener for clipboard images

1.3 Batch Processing

Why: Process multiple images at once Effort: Medium | Impact: High

  • Upload multiple images
  • Apply same transformations to all
  • Download as ZIP file
  • Progress indicator for batch operations
  • Individual vs global settings per image

Phase 2: Advanced Image Operations (Priority: MEDIUM-HIGH)

2.1 Smart Presets 🎯 HIGH VALUE

Why: Common use cases made easy Effort: Low | Impact: High

  • Web Thumbnail (300x300, WebP, 75% quality)
  • Social Media (1200x630 for OG images)
  • Profile Picture (square crop, various sizes)
  • Email Friendly (max 1MB, optimized)
  • Retina Display (@2x, @3x multipliers)
  • Icon Set (16, 32, 64, 128, 256px)
  • Custom preset saving

Implementation notes:

  • Add preset dropdown in UI
  • Store presets as JSON configs
  • Quick-apply button for each preset
  • LocalStorage for custom user presets

2.2 Image Optimization

Why: Reduce file size without quality loss Effort: Low | Impact: High

  • Auto-optimize button (best compression/quality ratio)
  • Lossless PNG optimization
  • Strip EXIF metadata (privacy + size)
  • Progressive JPEG encoding
  • Show compression statistics

2.3 Additional Transformations

Why: More creative control Effort: Medium | Impact: Medium

  • Rotation (90°, 180°, 270°, custom)
  • Flip (horizontal/vertical)
  • Grayscale conversion
  • Blur effect (with intensity)
  • Sharpen filter
  • Brightness/contrast adjustment
  • Border/padding addition

Phase 3: Utilitarian Power Features (Priority: MEDIUM)

3.1 Image Analysis

Why: Understand your images Effort: Low | Impact: Medium

  • Display image metadata (dimensions, format, color space)
  • File size analysis (before/after)
  • Color palette extraction
  • Dominant color detection
  • Transparency detection
  • Aspect ratio calculator

3.2 Custom Crop Tool

Why: Precise control over cropping Effort: High | Impact: Medium

  • Visual crop selector (drag handles)
  • Aspect ratio lock
  • Freeform cropping
  • Rule of thirds grid overlay
  • Zoom for precision

3.3 Watermarking

Why: Brand/protect images Effort: Medium | Impact: Medium

  • Text watermark with custom font
  • Image watermark overlay
  • Position control (9 positions + custom)
  • Opacity adjustment
  • Repeat pattern option

3.4 Image Comparison Tool

Why: A/B test different settings Effort: Medium | Impact: Low-Medium

  • Compare 2-4 versions side-by-side
  • Slider to reveal differences
  • Quality vs file size comparison
  • Export comparison settings

Phase 4: Workflow & Automation (Priority: LOW-MEDIUM)

4.1 API Access

Why: Integrate with other tools Effort: Low | Impact: Medium

  • Generate API keys in UI
  • Rate limiting per key
  • Usage statistics dashboard
  • Webhook support for async processing
  • OpenAPI/Swagger documentation

4.2 Templates & Workflows

Why: Reusable transformation pipelines Effort: Medium | Impact: Medium

  • Save transformation pipelines
  • Chain multiple operations
  • Share templates via URL
  • Import/export templates (JSON)
  • Community template gallery

4.3 History & Favorites

Why: Quick access to common tasks Effort: Low | Impact: Low

  • Recent transformations (local storage)
  • Favorite presets
  • Quick re-apply last settings
  • Clear history button

Phase 5: Extended Format Support (Priority: LOW)

5.1 More Input Formats

Effort: Low-Medium | Impact: Medium

  • AVIF support (next-gen format)
  • TIFF support
  • SVG to raster conversion
  • ICO (favicon) generation
  • PDF to image (first page)
  • GIF frame extraction

5.2 Advanced Output Options

Effort: Medium | Impact: Low

  • Multi-size export (responsive images)
  • Generate <picture> tag HTML
  • Create image sprites
  • Generate CSS for backgrounds

Phase 6: Enterprise Features (Priority: LOW)

6.1 User Accounts (Optional)

Why: For managed deployments Effort: High | Impact: Situational

  • User authentication
  • Per-user quotas
  • Saved presets sync
  • Usage analytics
  • Team collaboration

6.2 Cloud Storage Integration

Why: Direct save to storage Effort: High | Impact: Low-Medium

  • S3/MinIO upload
  • Cloudflare Images integration
  • Google Drive export
  • Dropbox integration

Recommended Next Steps 🚀

Sprint 1 (Week 1): Immediate UX Wins

Focus: Make the tool more intuitive and powerful

  1. Drag & Drop Upload (Phase 1.2) - 2-3 hours

    • Drop zone with visual feedback
    • Clipboard paste support
    • Multiple file selection

  2. Smart Presets (Phase 2.1) - 3-4 hours

    • 6-8 common presets (web, social, profile, etc.)
    • Quick-apply buttons
    • Custom preset saving

  3. Keyboard Shortcuts - 1-2 hours

    • Ctrl+V to paste image
    • Enter to process
    • Ctrl+D to download
    • ? to show shortcuts help

Total effort: ~8-10 hours | Impact: Very High

Sprint 2 (Week 2): Power User Features

Focus: Add functionality for advanced users

  1. Additional Transformations (Phase 2.3) - 4-6 hours

    • Rotate, flip, grayscale
    • Sharpen, blur filters
    • Backend Sharp API extensions

  2. Image Analysis (Phase 3.1) - 2-3 hours

    • Metadata display panel
    • Color palette extraction
    • Transparency detection

  3. Auto-Optimize (Phase 2.2) - 2-3 hours

    • Smart quality detection
    • Format recommendation
    • One-click optimization

Total effort: ~10-12 hours | Impact: High

Sprint 3 (Week 3+): Polish & Advanced

Focus: Batch processing and custom tools

  1. Batch Processing (Phase 1.3) - 6-8 hours

    • Multiple file upload
    • Queue management
    • ZIP download

  2. Custom Crop Tool (Phase 3.2) - 8-10 hours

    • Interactive crop overlay
    • Visual drag handles
    • Aspect ratio controls

Quick Wins (Low Effort, High Impact) ⚡

Immediate Improvements (< 2 hours each)

  1. ✅ Live Preview - Phase 1.1 (COMPLETED)
  2. 🎯 Drag & Drop - Phase 1.2 (START HERE!)
  3. 🎯 Smart Presets - Phase 2.1
  4. 🎯 Keyboard Shortcuts - UX Polish
  5. 🎯 Copy to Clipboard - UX Polish
  6. Image Analysis - Phase 3.1
  7. Auto-optimize - Phase 2.2

UX/UI Polish (1-3 hours each)

  • Dark mode support ✅
  • Keyboard shortcuts (Ctrl+V paste, Enter to process)
  • Copy image to clipboard
  • Undo/redo support
  • Mobile-responsive design improvements
  • Toast notifications for actions
  • Image format auto-detection suggestions
  • Loading progress bars instead of spinners

Technical Debt & Infrastructure

Code Quality

  • Add unit tests (backend)
  • Add E2E tests (Playwright)
  • TypeScript strict mode
  • ESLint + Prettier configuration
  • CI/CD pipeline (GitHub Actions or Gitea Actions)
  • Code coverage reporting

Performance

  • Image processing queue (for heavy operations)
  • Redis caching for repeated transforms
  • CDN integration
  • WebP/AVIF auto-detection based on browser support
  • Lazy loading for UI components
  • Service worker for offline support

Security

  • Rate limiting (prevent abuse)
  • File type validation (magic bytes check)
  • Max file size enforcement (configurable)
  • CORS configuration
  • CSP headers
  • Input sanitization audit

Monitoring

  • Prometheus metrics endpoint
  • Error tracking (Sentry integration)
  • Performance monitoring
  • Usage analytics (privacy-focused)

Community Ideas

Have suggestions? Open an issue on the repository:

  • Feature requests
  • Bug reports
  • Use case discussions
  • Performance improvements

Maintainer: jason
Repository: https://git.alwisp.com/jason/pnger
Last Updated: 2026-03-08

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