PDF Viewer C++ Migration – Summary for Ali

warning: ICC support is not available Fast PDF Viewer - C++ Migration Plan Summary

What This Project Does

Transform your WordPress PDF viewer from slow JavaScript rendering to lightning-fast C++ backend

processing with VPS integration.

Key Features & Benefits

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Feature Description Benefit

C++ VPS Processing Host C++ PDF service on Hostinger VPS 70% faster processing than current system

Virtual Scroll System Scribd-like page-by-page scrolling

Smooth performance even with 100+ page

PDFs

Smart Image Loading First 5 images local, rest from VPS Instant loading + optimized bandwidth

Dual Container

System

Toggle between PDF images & extracted

text

Perfect for both visitors & Google SEO

Elementor Widget Custom widget for easy page building Drag & drop PDF viewer in any template

ACF Integration Map PDF data to custom fields Flexible field management

Architecture Overview

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Component Technology Purpose

Backend Processing C++ with Poppler library Convert PDF → Images + Extract Text

API Communication

REST API (JSON) WordPress ↔ VPS communication

Frontend Display JavaScript Virtual Scroll Fast, memory-efficient image display

Storage Strategy Local (5 images) + VPS (rest) Balance speed & storage costs

SEO Optimization Hidden text container Google can crawl all PDF text

12-Step Implementation Plan

Step Task Time Estimate What Gets Built

1 Setup C++ VPS Service 1-2 days API endpoints for PDF processing

2 Backup Current Plugin

2 hours Safety backup of existing system

3 Create New Plugin Structure

1 day WordPress plugin framework

4 VPS Communication

1 day WordPress ↔ C++ API connection

5 Elementor Widget 1-2 days Drag & drop PDF viewer widget

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Step Task Time Estimate What Gets Built

6 Virtual Scroll System 2-3 days High-performance image scrolling

7 Toggle Container System

1 day Switch between images/text views

8 Custom Fields Integration

1 day Save PDF data to WordPress

9 Migration System 1-2 days Convert existing PDFs to new system

10 Performance Testing

1 day Optimize speed & memory usage

11 SEO Implementation

1 day Ensure Google can read PDF text

12 Error Handling

1 day Fallback systems & error recovery

Performance Targets

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Metric Current System New C++ System Improvement

Small PDF (5 pages) 15-30 seconds < 5 seconds 6x faster

Medium PDF (25 pages) 2-5 minutes < 15 seconds 10x faster

Large PDF (100 pages) 10-15 minutes < 60 seconds 15x faster

First Page Display 10-15 seconds < 3 seconds 5x faster

Memory Usage High (all pages loaded) Low (virtual scroll) 80% reduction

Technical Stack

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Layer Technology Purpose

VPS Backend C++ + Poppler + Nginx Ultra-fast PDF processing

WordPress Plugin

PHP 7.4+ WordPress integration

Frontend JavaScript ES6+ Virtual scrolling & UI

UI Framework Elementor Widget Visual page building

Storage Local + VPS Hybrid Optimized loading strategy

User Experience Flow

Step User Action System Response

1 Upload PDF to WordPress System sends to C++ VPS for processing

2 C++ processes PDF Returns image URLs + extracted text via JSON

3 WordPress saves data First 5 images local, rest on VPS

4 Visitor views page Instant display of first 5 images

5 Visitor scrolls Lazy loads remaining images from VPS

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Step User Action System Response

6 Toggle to text view Shows extracted text for easy reading

7 Google crawls page Finds all text in hidden SEO container

SEO Benefits

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Feature SEO Impact

Extracted Text 100% of PDF content searchable

Hidden Text Container Google crawls text without affecting UX

Structured Data Better search result snippets

Fast Loading Improved Core Web Vitals score

Mobile Optimization Better mobile search rankings

Cost Efficiency

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Resource Current Usage New System Savings

Server CPU High (PDF processing) Low (just API calls) 80% reduction

Storage All images local

5 local + rest VPS 60% WordPress storage saved

Bandwidth High initial load Progressive loading 40% bandwidth reduction

Processing Time Blocks server Async VPS processing No server blocking

Success Metrics

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Goal Target Measurement

Processing Speed 70% faster Before/after timing tests

User Experience Scribd-like smoothness

60 FPS scrolling

SEO Improvement Better indexing Google Search Console

Memory Efficiency 80% less RAM usage Browser dev tools monitoring

Mobile Performance < 3 second load Mobile PageSpeed Insights

Why This Approach Works

1. C++ Speed: Native code processing vs JavaScript interpretation

2. VPS Separation: Dedicated resources vs shared WordPress server

3. Smart Loading: Progressive image loading vs full PDF rendering

4. Dual Purpose: Visual experience + SEO optimization

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5. Scalability: Handle any PDF size without server strain

Next Steps for Implementation

1. Setup C++ service on your Hostinger VPS

2. Install required libraries (Poppler, JSON, HTTP server)

3. Follow 12-step plan using provided Cursor templates

4. Test with sample PDFs at each step

5. Migrate existing content using bulk processor

6. Monitor performance and optimize as needed

Total Development Time: 2-3 weeks

Expected Performance Gain: 5-15x faster

SEO Improvement: 100% content indexable

User Experience: Professional, Scribd-like interface