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Browser Rendering Optimization Techniques
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Web Workers
Optimizes rendering by performing expensive or CPU-intensive tasks in a background thread, preventing the main thread from being blocked.
Hardware Acceleration
Optimizes rendering by offloading certain graphical tasks from the CPU to the GPU, leading to smoother animations and transitions.
Optimize CSS and JavaScript Execution
By structuring the CSS to minimize the complexity of selectors and batch updating DOM changes, rendering can be significantly improved.
Async and Defer Attributes
These attributes optimize rendering by allowing the browser to download scripts in the background without blocking the DOM construction.
Critical Rendering Path Optimization
Optimizes rendering by prioritizing the loading, parsing, and painting of only the essential above-the-fold content first.
CSS Containment
The contain property in CSS isolates a subtree from the rest of the document to minimize the area browsers need to render, thus reducing the painting and layout workload.
Minimize Reflows and Repaints
Optimizes rendering by reducing the number and scope of reflow and repaint operations, as these are expensive in terms of performance.
JavaScript Bundling and Minification
Improves rendering performance by reducing the number of files the browser must download and the size of the JavaScript payloads.
Image optimization
Reduces the rendering load by using appropriately sized images, choosing the correct format, and utilizing techniques like lazy-loading.
Use of RequestAnimationFrame
Allows for creating smooth animations by aligning animation updates with the browser's refresh rate, thus optimizing rendering.
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