Website screenshots in WordPress

1<?php
2// Add to functions.php or a custom plugin
3function allscreenshots_shortcode($atts) {
4    $atts = shortcode_atts([
5        'url' => '',
6        'width' => 1280,
7        'height' => 800,
8        'fullpage' => 'false',
9    ], $atts);
10
11    if (empty($atts['url'])) return '';
12
13    $cache_key = 'screenshot_' . md5($atts['url']);
14    $screenshot_url = get_transient($cache_key);
15
16    if (!$screenshot_url) {
17        $response = wp_remote_post(
18            'https://api.allscreenshots.com/v1/screenshot',
19            [
20                'headers' => [
21                    'Authorization' => 'Bearer ' . SCREENSHOT_API_KEY,
22                    'Content-Type'  => 'application/json',
23                ],
24                'body' => wp_json_encode([
25                    'url'      => $atts['url'],
26                    'fullPage' => $atts['fullpage'] === 'true',
27                    'viewport' => [
28                        'width'  => (int) $atts['width'],
29                        'height' => (int) $atts['height'],
30                    ],
31                ]),
32            ]
33        );
34
35        $body = json_decode(wp_remote_retrieve_body($response));
36        $screenshot_url = $body->screenshotUrl;
37        set_transient($cache_key, $screenshot_url, DAY_IN_SECONDS);
38    }
39
40    return sprintf(
41        '<img src="%s" alt="Screenshot of %s" loading="lazy" />',
42        esc_url($screenshot_url),
43        esc_attr($atts['url'])
44    );
45}
46add_shortcode('screenshot', 'allscreenshots_shortcode');
47// Usage: [screenshot url="https://example.com"]