| #1 | QODE Optimizer | 74 | 1 | 249 | 30k+ | | | Non-prefixed global variable |
| #2 | TinyPNG – JPEG, PNG & WebP image compression | 72 | 40 | 73 | 100k+ | | | Non-prefixed global variable |
| #3 | Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize | 67 | 293 | 80 | 10k+ | | | Text Domain Mismatch |
| #4 | Image Optimization For SEO | 56 | 116 | 69 | 3k+ | | | Non Singular String Literal Domain |
| #5 | Compress, Resize & Lazy Load Images – WPvivid Image Optimization | 47 | 107 | 58 | 10k+ | | | Missing direct file access protection |
| #6 | Squeeze – Image Optimization & Compression, WEBP Conversion | 41 | 20 | 80 | 2k+ | | | Nonce verification recommended |
| #7 | Highcompress Image Compressor | 41 | 106 | 69 | 600 | | | Text Domain Mismatch |
| #8 | Flying Images: Optimize and Lazy Load Images for Faster Page Speed | 40 | 32 | 58 | 3k+ | | | Missing direct file access protection |
| #9 | ThumbPress – Compress Images, Manage Thumbnails, Detect Image Issues, WebP/AVIF, Lazy Loading, Hotlinking & More | 38 | 20 | 92 | 30k+ | | | Direct Query |
| #10 | Converter for Media – Optimize images | Convert WebP & AVIF | 35 | 130 | 53 | 500k+ | | | curl curl setopt |
| #11 | Disable Bulk Smush Limit of Smush Image Optimization | 35 | 3 | 2 | 3k+ | | | Hidden files included |
| #12 | Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization | 29 | 80 | 163 | 200k+ | | | Nonce verification recommended |
| #13 | Smush – Image Optimization, Compression, Lazy Load, WebP & CDN | 25 | 244 | 568 | 1m+ | | | Non-prefixed hook name |
| #14 | ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF | 22 | 1,044 | 800 | 300k+ | | | Non-prefixed global variable |
| #15 | Imagify Image Optimization: Optimize Images | Compress & Convert to WebP/AVIF | 21 | 428 | 862 | 1m+ | | | Non-prefixed global variable |
| #16 | Robin Image Optimizer – Unlimited Image Optimization, WebP & AVIF | 20 | 556 | 543 | 100k+ | | | Output is not escaped |
