Have I Downloaded This Before?
Extension Delisted
This extension is no longer available in the official store. Delisted on 2025-09-16.
Keep your downloads folder clean by preventing duplicates.
Keep your downloads folder clean by preventing duplicates.
Whenever a user begins to download a file that he has downloaded before, the user is given the option to either open the previously downloaded file right away or resume the download.
As easy as (1), (2), (3)
Latest reviews
Doesn't work. I got a notification asking that I have already downloaded this file and if I wanted to resume download. But this notification came after the file got downloaded again. Waste of time.
No longer works. Annoying.
sometimes it works. sometimes it doesn't. it could also do with a lot of extra options, for instance, 'have I downloaded this filename before' -- often you save files with your own filename, it would be useful if it could detect that you've saved something as that filename already (because it could well be the same file).
安装后还是会下载重复文件。已经重启浏览器。难道是我使用的姿势不对?
Not working
This extension still works to date, last updated 2015 but works amazingly!
Really love this extension. Only thing I would like to see is the popup notification 'go away' after I've made a choice, instead of me having to close it with the [X] icon.
This is a great little extension that is simple and effective. It does exactly what it say it does, alert you when you try to download a file that you've already downloaded, so you don't end up filling up your downloads folder with a bunch of duplicates.
It literally doesn't work!! I downloaded a link. then I tried again and yes a window popped up...but it doesn't give you the option TO NOT DOWNLOAD IT. I clicked over to the download window and THERE IT WAS, AGAIN!! IN THE (1) AND (2) FORMAT...WHAT THE HECK?
Great ,very useful !
Doesn't work anymore on Yandex Browser..
Very useful, no more downloaded.pdf (7)
Superb! this is really good and useful.
This is really useful. Thanks
Great app. This is something Google should already have.
doesn't work win8.1
It pauses downloads that have been downloaded before but no pop up to open existing one. Win7. I would love this to work, and think it would be essential for everyone to avoid duplicates. nevermind
Doesn't work at all :( Win8.1
It doesnt work i have it enabled and i can keep downloading the same thing it doesnt give me a message at all
Doesn't work fully on Win7. Only pauses the download but nothing else happens. Not really handy to use.
good job
This has to be one of the most genius ideas ever. A simple, yet overlooked feature that should have been implemented long ago! Simply superb! You're amazing! Keep up the great work!
This is genius! It's annoying when I go to download LEGAL copies of my roms to find out I already have a copy of it! Or accidentally downloading the same homework assignment. That would pile my downloads folder with unnecessary copies of the same file. With this extension I am able to be notified when it realizes I already downloaded a file and asks whether or not I want to cancel my download, open it instead of downloading, or carry on with the installation just in case I want two copies. Very productive.