To find out backlink, I used many free tools but is there any way to easily find out weak backlinks.?
I've tried this new service linkquidator.com and it looks like a pretty simple and improved tool. They just have a free trial and this aspect was decisive for me
No, the best tool to check backlinks is Ahrefs.com. But you will need premium access which is quite expensive to use this tool fully. It can show you all the backlinks to your site, all the anchors and a lot of more details. Or, you can export you backlinks from Google Webmaster tools into Google Spreadsheet, copy all the backlinks and use Netpeak Checker - https://forums.digitalpoint.com/threads/netpeak-checker-desktop-tool-free-mass-analysis-of-sites-by-various-parameters.2211200/ . (That thread is posted by my boss). When the Checker checks the backlinks, you can choose all the bad backlinks (0 pr, quite spammy, etc) and sent that domains to Google Disavow Tool. Kind regards,
I use Majestic SEO for checking backlinks, there is a free version but for anything in depth you will need to pay a subscription. If you really need to find bad links to your site the best tool I think is Link Detox, they used to have a free trial but I believe this has now ended and you need to pay a subscription. Depends how much your site is worth to you.
I use link detox quite a bit, it is very good value, and you can even export the disavow list straight to .txt file.. Its the most thorough way of cleaning up your link profile that i know of... I think first time users can get 50% discount for a tweet or something like that, not sure if that promotion is still running or not, but even without the tweet, its very good value if you are working on a site with larger BLP's.
You can use any tool for checking backlinks of your site, when you have a list of backlinks from your site then you need to check one by one to find low quality backlinks.
Low qualitiy links a mostlikely Links below pr1 and/or when they have to do something with porn, gambling or pahrma products