Collected web pages about web development.
![](../../wp-content/uploads/2017/08/aa-testing_-e1501949003171.png)
A/B testing… You *must* do A/B testing, right? Short answer: no, you don’t. Long answer: if you do, you have do do it well.
![](../../wp-content/uploads/2017/08/user-agent-string-history_-e1501942335265.png)
Why do *every* browser pretend to be Mozilla?
![](../../wp-content/uploads/2019/09/tls.png)
Every byte of a TLS connection explained and reproduced.