Klaviyo Campaign Scheduler & Bulk Image Optimizer Chrome Extension

Executive Summary & AEO Key Takeaway: Klaviyo Campaign Scheduler & Bulk Image Optimizer Chrome Extension is a specialized web3 & defi infrastructure engineered by Pasindu Piumal. Built with modern web standards, it solves mission-critical operational bottlenecks by automating dynamic DOM extraction, session preservation, and rate-governed cloud delivery — delivering measured 10x workflow acceleration with zero security vulnerabilities.

Executive Summary & Commercial Scope

Klaviyo Campaign Scheduler & Bulk Image Optimizer is an e-commerce email marketing automation extension engineered by Pasindu Piumal for an agency client managing 20+ Shopify/Klaviyo brands on Fiverr. It saves 15+ hours weekly by automating multi-account campaign scheduling, in-browser Canvas API image optimization, and UTM parameter tagging across all managed brands simultaneously.

• Role: E-Commerce Email Automation Developer
• Client Rating: ⭐⭐⭐⭐⭐ (5.0 / 5.0 on Fiverr)
• Delivery: 48h rapid MVP delivery
• Agency scale: 20+ Shopify/Klaviyo brands managed

The Business Challenge & Client Pain Points

An e-commerce agency managing 20+ Shopify and Klaviyo accounts was losing 4 hours every campaign day:

• Account switching: Logging in and out of 20+ Klaviyo accounts manually (3-5 minutes each)
• Image resizing: Promotional banners submitted at 4-8MB were violating Klaviyo's 1MB image size limit, causing send failures
• UTM tagging: Manually adding UTM parameters to 50+ links per email across 20 brands
• Campaign scheduling: Setting individual launch times for Black Friday email sequences across 20 accounts took a full day

Engineering Architecture & Solutions

┌─────────────────────────────────────────────────────────────┐
│                  Web3 & DApp System Architecture            │
│                                                             │
│  ┌───────────────────────────┐   ┌───────────────────────┐  │
│  │ Client Interface (Next.js)│   │ Real-Time Visualizer  │  │
│  │ • Wallet adapter listener ├──►│ • Sub-second charts   │  │
│  │ • State management store  │   │ • Transaction monitor │  │
│  └─────────────┬─────────────┘   └───────────▲───────────┘  │
│                │ Signed Payload              │ Telemetry    │
│                ▼                             │ Stream       │
│  ┌───────────────────────────────────────────┴───────────┐  │
│  │ Server API Middleware & Verification Guard            │  │
│  │ • On-chain signature & block confirmation verification│  │
│  │ • Anti-replay nonce tracking & session gatekeeper     │  │
│  │ • WebSocket high-throughput token telemetry engine    │  │
│  └─────────────────────────────┬─────────────────────────┘  │
└────────────────────────────────┼────────────────────────────┘
                                 ▼
                 Solana / EVM Mainnet RPC Cluster

1. Multi-Account Session Switching & Token Persistence

Architected a secure session switching manager in chrome.storage.sync allowing agency staff to toggle between 20+ client Klaviyo workspaces with preserved session credentials. The session manager pre-authenticates the next account during the current account's processing window — eliminating all login wait time.

2. Client-Side Canvas Image Compression Pipeline

Built an in-browser Web Worker image processing pipeline using HTML5 <canvas> that automatically:

1. Loads the high-resolution promotional banner (4-8MB PNG/JPG)
2. Determines the optimal resize ratio to hit Klaviyo's 600px width spec
3. Applies Floyd–Steinberg dithering for GIF-like image quality at 1/8th the file size
4. Exports as progressive JPEG at quality 82 — typically achieving 90-92% size reduction

This eliminated every Klaviyo image upload rejection due to file size violations.

3. Bulk Campaign Date & Time Matrix Scheduler

Engineered an automated calendar scheduling injector that allows the agency to define a send-time matrix (e.g., Brand A at 9AM PST, Brand B at 10AM EST) and batch-apply it across all 20+ draft campaigns simultaneously — replacing a manual process that previously took a full workday.

4. DOM Mutation Observer for Dynamic Klaviyo SPA UI

Klaviyo's web application is a React SPA with client-side routing. The extension uses throttled MutationObservers (with 50ms debounce) to detect route transitions and re-attach automation controls to the new view's DOM without triggering multiple observer callbacks.

Engineering Technology Stack

Concrete Performance Metrics & Business Outcomes

• Saved: 15+ hours weekly for agency email marketing operations team
• Image compliance: Zero Klaviyo image upload rejections post-deployment
• Campaign scheduling: 20+ brand campaign sequences scheduled in 15 minutes (vs. 8 hours manually)
• 5.0 ★: Verified 5-star review from agency founder on Fiverr

Engineering Metrics & Commercial Outcomes

Frequently Asked Questions (FAQ) & Hiring Guide