What's the largest JavaScript file you have ever seen? 5MB? That's already really large for most projects. Have you ever seen a single JavaScript file on websites exceeds 10MB? Now there's an example from the cyber security company SANS. SANS delivers a 34.2MB JavaScript file on their newsletter pages, which is even 6.6MB after compression. You may be curious about what's inside. If you find the longest part in this JavaScript file, you may find 3 JSON strings wrapped with JSON.parse. It's basically everything of 3 newsletters from SANS. You may see "UK Tribunal Opens" in the first JSON string, and you can find this is actually the first article in NewsBites page. They just packed all content of 3 newsletters in the same JavaScript file and load it each time when you open one of the three newsletters page. I don't know why they packed the JSON inside JavaScript file in such a format, but apparently it's not what professionals really should ever do.