Ever find yourself craving pickles, but when you reach for your favorite jar of dills you can't pry it open, no matter how hard you grip? Or maybe you're struggling to open a jar of marinara sauce ...

An curved arrow pointing right. When a jar is vacuum-sealed, the different air pressures make it hard to open. But you can use a few simple tricks to break that stubborn seal. Follow Tech Insider ...

Since a JAR file uses a standard compression algorithm, opening a JAR file is as simple as changing its extension from .jar to .zip and extracting the contents using a standard decompression tool.