{"id":4594,"date":"2025-02-05T20:52:07","date_gmt":"2025-02-05T19:52:07","guid":{"rendered":"https:\/\/webiphi.be\/?p=4594"},"modified":"2025-02-20T20:07:41","modified_gmt":"2025-02-20T19:07:41","slug":"optimisation-images-web","status":"publish","type":"post","link":"https:\/\/webiphi.be\/en\/web-image-optimization\/","title":{"rendered":"Optimizing images for the web: essential techniques and tools"},"content":{"rendered":"

\ud83d\ude80 Why optimize images for the web?<\/strong><\/h2>\n\n\n\n

Images play a crucial role in theuser experience<\/strong>the loading time<\/strong> and the natural referencing<\/a> (SEO)<\/strong> of a website. Poor image management can slow down your site<\/strong>affect your conversion rate and penalize your Google ranking<\/strong>.<\/p>\n\n\n\n

\ud83d\udcc9 A site that's too slow can lose up to 53% of mobile visitors!<\/strong><\/p>\n\n\n\n

\u2705 Optimizing images allows you to :
\u2714 Improve loading speed<\/strong> of the
\u2714 Reduce bandwidth consumption<\/strong>
\u2714 Improve SEO<\/strong> thanks to better indexing by Google
\u2714 Delivering a seamless user experience<\/strong><\/p>\n\n\n\n

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\ud83d\udccf 1. Choose the right image format<\/strong><\/h2>\n\n\n\n

The choice of image format<\/strong> is essential to ensure good quality while reducing file size.<\/p>\n\n\n\n

\ud83d\udccc Common formats<\/strong><\/h3>\n\n\n\n
Format<\/strong><\/th>Benefits<\/strong><\/th>Disadvantages<\/strong><\/th>Recommended use<\/strong><\/th><\/tr><\/thead>
JPEG<\/strong><\/td>Good compression and acceptable quality<\/td>Less efficient for images with transparency<\/td>Photos and images with lots of color<\/td><\/tr>
PNG<\/strong><\/td>Transparency and better quality<\/td>Larger files<\/td>Logos, icons, images requiring high quality<\/td><\/tr>
WebP<\/strong><\/td>Excellent compression and optimum quality<\/td>Less supported on older browsers<\/td>Photos, illustrations, complex images<\/td><\/tr>
SVG<\/strong><\/td>Lightweight, scalable vector format<\/td>Not suitable for photos<\/td>Logos, icons, illustrations<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud83d\udce2 Recommendation:<\/strong> Use WebP<\/strong> for a better compromise between quality and weight, and SVG<\/strong> for simple graphic elements.<\/p>\n\n\n\n

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\ud83d\udd27 2. Compress images without loss of quality<\/strong><\/h2>\n\n\n\n

\ud83d\udccc A non-optimized image can weigh you down several MB<\/strong>when it could be reduced to some Ko<\/strong> with no visible loss.<\/p>\n\n\n\n

\ud83d\udee0\ufe0f Efficient compression tools<\/strong><\/h3>\n\n\n\n
Tool<\/strong><\/th>Type<\/strong><\/th>Benefits<\/strong><\/th><\/tr><\/thead>
TinyPNG<\/strong><\/td>On line<\/td>Efficient compression for PNG and JPEG<\/td><\/tr>
Squoosh<\/strong><\/td>On line<\/td>Adjusts quality and converts to WebP<\/td><\/tr>
ImageOptim<\/strong><\/td>Software (Mac)<\/td>Advanced lossless compression<\/td><\/tr>
ShortPixel<\/strong><\/td>WordPress plugin<\/td>Automatic image compression<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud83d\udca1 Tip:<\/strong> Always compress your images before uploading them to your site.<\/p>\n\n\n\n

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\ud83d\udcd0 3. Resize images for optimal display<\/strong><\/h2>\n\n\n\n

There's no need to upload an image in 4000\u00d73000 px<\/strong> if displayed in 800\u00d7600 px<\/strong> on the site.<\/p>\n\n\n\n

\ud83d\udccc Best practices :<\/strong><\/h3>\n\n\n\n

\u2714 Adapt the image size<\/strong> according to use
\u2714 Avoid displaying a larger image than necessary<\/strong>
\u2714 Give preference to CSS and SVG<\/strong> for graphic elements rather than heavy images<\/p>\n\n\n\n

\ud83d\udee0 Useful tools for resizing :<\/strong><\/p>\n\n\n\n