I made an Electron app which doesn’t use gigabytes of RAM! Electron + SvelteKit + GQL

Innovative Electron Application Achieves Low Memory Usage with SvelteKit and GraphQL

In the realm of desktop application development, performance optimization is often overlooked, leading to sluggish, resource-heavy programs. However, recent developments demonstrate that efficient, lightweight Electron apps are entirely achievable with the right approach.

Rethinking Electron Performance

Many Electron-based applications tend to consume excessive RAM and experience sluggish UI rendering due to frequent repaints and inefficient resource management. Common issues stem from unnecessary reflows and repaints triggered by blanket CSS changes, resulting in high CPU and memory consumption.

Key Optimization Strategies

By optimizing rendering processesโ€”specifically, limiting repaints and leveraging CSS transforms and opacity for animationsโ€”it’s possible to significantly reduce resource usage. Enabling background throttling further conserves system resources, allowing for more complex visual effects and functionalities without sacrificing performance. These techniques enable advanced features like 3D animations and sophisticated CSS effects (such as image and video glow effects) to run smoothly and efficiently.

Choosing the Right Framework

For this project, SvelteKit was selected over heavier alternatives like React, primarily due to its minimal footprint and efficient reactivity system. Unlike some popular Electron apps that can consume hundreds of megabytes of RAM solely for JavaScript processing, this approach maintains a lean memory profile, making it suitable even for lower-spec systems.

Technology Stack Highlights

  • TypeScript: Ensures robust, type-safe coding with a strict ESLint configuration to uphold code quality.
  • GraphQL & urql: Facilitates efficient data fetching and state management, with offline caching and entity normalization via gql.tada, ensuring seamless operation even when offline.
  • UI Components: Built predominantly with shadcn/svelte, offering a sleek, modern interface.

Innovative Architecture Elements

Most of the computational workload is managed within Electron’s utilityProcess, a dedicated Node.js worker environment designed for intensive tasks. Communication between processes is handled through sophisticated IPC mechanisms, ensuring smooth, asynchronous interactions.

Advanced Features

The application incorporates several cutting-edge features, such as a custom subtitle library, OpenGL shader-based video processing to reduce compression artifacts, and a host of other visual enhancementsโ€”all optimized for maximum efficiency.


This project exemplifies how thoughtful development practices and modern technologies can create high-performance, resource-efficient Electron applications. By paying close attention to rendering optimizations and leveraging lightweight frameworks like SvelteKit, developers can achieve desktop apps that are not only beautiful and powerful but also gentle


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