Performance und Barrierefreiheit
Web Workers, Done Properly
Background threads that run JavaScript separately from the page's main thread, used for heavy computation such as parsing data, image processing or search...
Lumexa Media · Artikel
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5.872 Artikel aus 14 Fachbereichen
Performance und Barrierefreiheit
Tree Shaking and Bundle Size, Done Properly
Removing unused code from JavaScript bundles during the build, so visitors only download the functions a page actually uses. Key takeaways Tree shaking: dead-co...
Performance und Barrierefreiheit
Text Compression with Brotli and Gzip: What Actually Works
Compressing HTML, CSS, JavaScript and other text responses on the server so they transfer in far fewer bytes, then decompressing them in the browser. Key takeaw...
Performance und Barrierefreiheit
Critical CSS: The Decisions That Matter
Delivering the styles needed to render the visible part of the page immediately, often inline in the HTML, and loading the rest of the CSS without blocking rend...
Performance und Barrierefreiheit
How to Get Lazy Loading Images Right
Deferring the download of images until they are about to scroll into view, using the loading="lazy" attribute or a script. Key takeaways Native attrib...
Performance und Barrierefreiheit
Content Visibility and Rendering Work: The Decisions That Matter
Using the CSS content-visibility property so the browser skips layout and painting for sections of a long page that are off screen until they are needed. Key ta...
Performance und Barrierefreiheit
Long Animation Frames: The Decisions That Matter
A browser API that reports rendering frames that took longer than 50 milliseconds, with details of the scripts responsible, used to diagnose slow interactions....
Performance und Barrierefreiheit
Server-Timing Header: What Actually Works
An HTTP response header that reports how long server-side steps took, such as database queries or cache lookups, so the timings appear in browser tools and moni...
Performance und Barrierefreiheit
A Practical Guide to 103 Early Hints
An informational HTTP response a server or CDN sends before the final response, telling the browser which critical resources to preload or connect to while the...
Performance und Barrierefreiheit
A Practical Guide to Soft Navigations in Single-Page Apps
Route changes in single-page applications that update the page without a full browser navigation, and the challenge of measuring their performance. Key takeaway...
Performance und Barrierefreiheit
A Practical Guide to Layout Thrashing
A performance problem where JavaScript alternately changes styles and reads layout values, forcing the browser to recalculate layout many times in one frame. Ke...
Performance und Barrierefreiheit
A Practical Guide to Image CDNs
Services that resize, compress and convert images on request, serving each visitor an appropriately sized image in a format their browser supports. Key takeaway...
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