You have to download an external helper program on your machine. The free version virtually has no features. My anti-virus blocked multiple attempts at accessing dubious websites in the background, and this by the external software they require you to install. This extension seems very dangerous.

ITS DONT WORK AND THEY ASK FOR MONEY.

Didn't work, even paid extensions run out when instagram learns what your doing you get banned, these apps should always be free, and make money off ads.

shitty paid extension

Downloaded to test it. Says it's usable but with limited features - which is fine.
Installed it, wanted to try, won't let me do ANYTHING before I register. Okay, I follow the link to their homepage. NO trial version codes, only commercial ones (cheapeast one something like 35 $ a year!
Uninstalled
F U

Bait software, works on a few sites and fences off premium features after a short time. Full version has limited functionality and no support for paid version.

has you download a program to use

The author of this software fails to clearly state that the program which costs $40 a year, will no longer function without paying to keep it updated. I have reported this deceptive sales practice to both the Firefox and Chrome stores.