Filename extension is like the wardrobe of your digital files, except much less fashionable. It's that three-letter suffix at the end of every file name that tells your computer what type of file it is. And just like fashion trends, some file extensions come and go while others remain classic favorites. Visual Studio Code is the Gucci of extensions, with high search volume and competition index, while Boolean data type is like last year's Crocs, with no search volume or CPC to speak of. Programming language is like the little black dress of extensions, always reliable and classy, while digital notepad is the trendy new accessory that everyone is talking about. So whether you're a tech guru or just a regular Joe trying to organize your files, taking a look at the popular trends in filename extension can help you stay in the loop and keep your digital wardrobe up to date.