Apple Safari 17’s Hidden Gems: JPEG XL & Font-Size-Adjust

Safari 17 introduces JPEG XL and enhanced `font-size-adjust`, potentially improving webpage loading times and layout consistency.

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Apple’s recently announced Safari 17 brings several key updates that promise to enhance user experience and web page loading times.

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Unveiled at the annual Worldwide Developers Conference (WWDC23), two new features of Safari 17 worth paying attention to are JPEG XL support and expanded capabilities of font-size-adjust.

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As Safari continues to evolve, these updates highlight the ever-changing landscape of web development and the importance of adaptability.

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One of the most noteworthy features of Safari 17 is its support for JPEG XL, a new image format that balances image quality and file size.

JPEG XL: A Game Changer For Page Speed Optimization

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JPEG XL allows for the recompression of existing JPEG files without any data loss while significantly reducing their size—by up to 60%.

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Page loading speed is a crucial factor that search engines consider when ranking websites. With JPEG XL, publishers can drastically reduce the file size of images on their sites, potentially leading to faster page loads.

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