How to speed up your website?
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This document discusses how to speed up websites. It recommends measuring website speed using tools like Lighthouse and WebPageTest. It provides tips for optimizing code and assets including handling external JavaScript, preconnecting domains, and using preload and prefetch. Image optimization techniques like lazy loading, next-gen formats, and the picture tag are outlined. Lastly, it lists useful developer resources and tools for website speed optimization.
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The Beginning - Jan 20 2009
Project SpaceLock aims to develop a web-based surveillance system using a webcam. Key issues include:
1. Establishing WiFi communication between the webcam and app server for data acquisition.
2. Deciding between using Matlab or OpenCV for image processing. While OpenCV is more portable, the team has more experience with Matlab.
3. Determining whether to stream video or transmit individual image sequences. Image sequences are lighter weight but streaming allows for video recording.
4. Researching how to implement SMS alerts by controlling a cellphone from the server computer.
The next steps are to further evaluate these technical issues, demonstrate a proof of concept for a Silverlight-based RTSP video player, and develop
PWA - Progressive Web Apps
Introduced by Google, eagerly approved by Microsoft and reluctantly adopted by Apple
PWA is a game-changing technology in the world of mobile-first and offline-first business
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This document discusses bringing 3D to the web using technologies like WebGL, THREE.js, and Autodesk Forge. It provides examples of using 3D on the web for creative, commercial, and industrial purposes. Autodesk Forge and its Model Derivative API and Viewer are presented as easier options for adding 3D to the web compared to lower-level APIs like WebGL. Considerations for mobile and VR/AR are also mentioned.
Measuring Web Performance - HighEdWeb Edition
Today, a Web page can be delivered to desktop computers, televisions, or handheld devices like tablets or phones. While a technique like responsive design helps ensure that our websites look good across that spectrum of devices we may forget that we need to make sure that our websites also perform well across that same spectrum. More and more of our users are shifting their Internet usage to these more varied platforms and connection speeds with some moving entirely to mobile Internet. In this session, we’ll look at the tools that can help you understand, measure and improve the performance of your websites and applications. The talk will also discuss how new server-side techniques might help us optimize our front-end performance. Finally, since the best way to test is to have devices in your hand, we’ll discuss some tips for getting your hands on them cheaply. This presentation builds upon Dave Olsen’s “Optimization for Mobile” chapter in Smashing Magazine’s “The Mobile Book.”
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This document discusses various techniques for improving web performance, noting that the front-end is often the slowest part. It outlines strategies for optimizing different aspects of page loading and rendering, including reducing the number of server requests, minimizing file sizes, using a CDN, leveraging the browser cache, optimizing DOM manipulation, and loading scripts asynchronously. The document emphasizes that performance requires tradeoffs and that tools can help automate optimizations.
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Workshop Takeaways:
Understand difference between is Performance Testing and Performance Engineering.
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Tools that help and speed up RWD dev
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How to speed up your website?
- 1. SPEED UP YOUR WEBISTE Cakra Danu Sedayu cakra.ds@gmail.com @cakrads cakrads
- 4. https://web.dev/what-is-speed/ PARAMETER CEPAT PADA WEBSITE? <5s Time to Interactive <2s First Contentful Paint <1s First Paint
- 5. BAGAIMANA CARA MENGUKURNYA? Lighthouse Available In : - Chroome Dev Tools (Audit) - Groome Plugin Extention - https://web.dev/measure - https://www.npmjs.com/package/lighthouse
- 7. Persiapan : USB DEBUGING https://developers.google.com/web/tools/chrome-devtools/remote-debugging
- 9. <Your Web Size is Matter> https://bit.ly/perf-budget-calculator 2. Text Compression https://web.dev/codelab-text-compression 3. Practice Node JS Base https://varvy.com/pagespeed/enable-compression.html 4. Practice PHP Base 1. Overview https://medium.com/oyotech/how-brotli-compression-gave-us-37-latency-improvement-14d41e50fee4 1. Brotli 2. GZip 3. Deflate
- 10. <Optimize Your Code and Configuration/> 1. Handle External Javascript: async, defer, module https://gist.github.com/jakub-g/385ee6b41085303a53ad92c7c8afd7a6
- 11. <Optimize Your Code and Configuration/> 2. Handle Assets : <preconnect> and <dns-prefetch> https://medium.com/reloading/preload-prefetch-and-priorities-in-chrome-776165961bbf https://responsivedesign.is/articles/prefetch-preconnect-dns-priority/ dns-prefetch: Preconnect: <link href="https://cdn.domain.com" rel="preconnect" crossorigin> <link href="https://cdn.domain.com" rel="preconnect" crossorigin>
- 12. <Optimize Your Code and Configuration/> 3. Handle Assets. Preload and prefetch https://medium.com/reloading/preload-prefetch-and-priorities-in-chrome-776165961bbf https://www.machmetrics.com/speed-blog/guide-to-browser-hints-preload-preconnect-prefetch/
- 14. <Optimize Your Code and Configuration/> 3. Handle Assets. Preload and prefetch https://www.keycdn.com/blog/resource-hints https://medium.com/reloading/preload-prefetch-and-priorities-in-chrome-776165961bbf
- 15. <Optimize Your Code and Configuration/> 3. Handle Assets. Preload and prefetch https://www.keycdn.com/blog/resource-hints https://medium.com/reloading/preload-prefetch-and-priorities-in-chrome-776165961bbf
- 16. <Optimize Your Image/> 1. Lazy-Load https://imagekit.io/blog/lazy-loading-images-complete-guide/
- 17. <Optimize Your Image/> 2. Next-Gen Format https://squoosh.app/editor
- 19. <Optimize Your Image/> 3. Use <picture> Tag
- 21. Usefull Sites - https://web.dev - https://www.webpagetest.org/ - https://developers.google.com/web/tools/lighthouse - https://squoosh.app/ - https://bit.ly/perf-budget-calculator - https://codelabs.developers.google.com/?cat=Web - https://bundlephobia.com/ - https://caniuse.com - https://developer.mozilla.org - https://www.youtube.com/user/ChromeDevelopers - https://www.instagram.com/samanthaming/
- 23. TERIMAKASIH Cakra Danu Sedayu cakra.ds@gmail.com @cakrads cakrads