Add social preview image and iPhone/Android EXIF guides

New 1200x630 preview card with the new logo, two high-intent guides,
cross-linked related lists, updated sitemap, footer and guides index.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

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           <h1>Photo privacy guides</h1>
           <p class="lead">Plain-language explanations of the hidden data inside photos, and how to remove it.</p>
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-        <div class="index-list"><a class="card" href="/guides/remove-gps-from-photo/"><strong>How to remove GPS location from a photo</strong><span>Most phones save the exact latitude and longitude of every photo they take. If the file keeps that data when you share it, anyone who receives it can read where you were.</span></a><a class="card" href="/guides/what-is-exif-data/"><strong>What is EXIF data?</strong><span>EXIF (Exchangeable Image File Format) is a block of hidden information that cameras and phones write into a photo file. It travels with the picture unless something removes it.</span></a><a class="card" href="/guides/what-is-c2pa/"><strong>What is C2PA and how do Content Credentials work?</strong><span>C2PA is an open standard from the Coalition for Content Provenance and Authenticity. It lets software attach a cryptographically signed record to an image describing where it came from and how it was changed.</span></a></div>
+        <div class="index-list"><a class="card" href="/guides/remove-gps-from-photo/"><strong>How to remove GPS location from a photo</strong><span>Most phones save the exact latitude and longitude of every photo they take. If the file keeps that data when you share it, anyone who receives it can read where you were.</span></a><a class="card" href="/guides/remove-exif-data-iphone/"><strong>How to remove EXIF data from photos on iPhone</strong><span>iPhone photos carry their location, the device model and the time they were taken. iOS lets you remove some of that, but not all of it. This guide covers each option and what it leaves behind.</span></a><a class="card" href="/guides/remove-exif-data-android/"><strong>How to remove EXIF and location data from photos on Android</strong><span>Android phones usually write GPS coordinates, the device model and a timestamp into every photo. The steps differ between manufacturers, so this guide covers the common ones and a method that works on any phone.</span></a><a class="card" href="/guides/what-is-exif-data/"><strong>What is EXIF data?</strong><span>EXIF (Exchangeable Image File Format) is a block of hidden information that cameras and phones write into a photo file. It travels with the picture unless something removes it.</span></a><a class="card" href="/guides/what-is-c2pa/"><strong>What is C2PA and how do Content Credentials work?</strong><span>C2PA is an open standard from the Coalition for Content Provenance and Authenticity. It lets software attach a cryptographically signed record to an image describing where it came from and how it was changed.</span></a></div>
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