Nothing
q_phred = phredQualityScore(1e-3)
q_solexa = solexaQualityScore(1e-3)
phredQualityProbability(q_phred)
solexaQualityProbability(q_solexa)
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.