How can I know my website penalized?

[Steve Markson]

If your website penalized, then Google will notify or warn you via email on your Google webmaster tool ID or message when you open your website Google webmaster tool.

Some recognition of penalize
1. If your Keyword ranking is down day to day
2. Your user traffic is down
3. Not Index your website, check this search in google cache:yourdomainname. It shows the date of Indexing.

[rogerkrish]

You can get the information from Google Webmaster Tool....they will show your penalized sites..go ahead with that..

[moria]

If you want to know that you are penalized by google there will be a sudden drop about your SERPs. Or all of your rankings or everything high will drag down to low.

[stephenj141]

Yeah, I agree with both comments. If Google not informed you about penalized your website then after reviewing your website ranking result you can predict and confirm about your website got penalized by search engine.

[alisenjerry]

If your website penalized, then Google will notify or warn you via email on your Google webmaster tool ID or message when you open your website Google webmaster tool.

Some recognition of penalize
1. If your Keyword ranking is down day to day
2. Your user traffic is down
3. Not Index your website, check this search in google cache:yourdomainname. It shows the date of Indexing.

I think you are right and You give such nice and useful information about this issue because recently penguin and panda update most of the website affected and most of the website owners faced a problem with this issue.

[James Andy]

Well, when your keywords affected then it means your site is penalized by Google.

[Andrewhudson040]

i mean when your keywords affected then it means your site is penalized by Google.

[colesraymond]

Webmaster Tools you may know consider Error and all the issues clashing your site.

As a matter of first importance Google doesn't punish the site, Google just hinder the specific website page having shaky joins and content. To keep away from such punishment dependably attempt to create do accompany back links.

[honeysign]

If your website is penalized then your keywords position will be change and you can know information through Google webmaster tool.

[george.goudis]

Yes, google webmaster tools is the most CORRECT tool for that issue.