What are HTTP and HTTPS? How they work exactly!


In this post, you will learn what is HTTP and HTTPS. You will also learn how they work. In addition, you will learn the difference between HTTP and HTTPS.

What are HTTP and HTTPS?

HTTP and HTTPS difference.


HTTP Stands for Hypertext transfer protocol, HTTP is a layer 7 protocol that enables users computers to interact with a web server. While entering a site you could see a small lock symbol which means the site is encrypted. This means it is using HTTPS URL but if there is no lock symbol and shows not secure then it is HTTP URL.

Now we know HTTP URL is not safe and not encrypted. When you enter into an HTTP site, there is a high chance to get hacked. The HTTP is not secured so, the middle man can see who all are accessing the sites. And they could also see all the data’s in plain text. The middle man can see everything transparently, what are you doing on an HTTP site.

HTTP sites are not secure to browser and there is also an advantage in HTTP, that is HTTP websites load faster than HTTPS sites. HTTP is very fast because there is no encryption, so the site becomes light weight. Also, the default port for HTTP is 80.

Also Read: What is encryption and decryption?


HTTPS Stands for Hypertext transfer protocol secure. HTTP over TLS or SSL is called HTTPS. TLS stands for transport layer security and SSL stand for secured socket layer. These TLS and SSL encrypts and decrypts data so, there will not be less chance to get hacked. The SSL is the older version and the newer version is TLS but both the version are in use.

When you get an SSL or TLS certificate, they generally encrypt the data in users site. When you enable SSL or TLS, you could see a lock symbol on the left side of the domain name. If you enabled SSL or TLS, they change plain text to cipher text. Which looks something like this,

Plain text to cipher text. HTTP and HTTPS

When it is changed to cipher text, no one could read it, until you break the cipher text using a key. Moreover it is not a real key. The is cryptographic key which ensures the data are secure and only if receiver have the key he can open the data.

Encryption explained. HTTP and HTTPS

When you see an SSL or TLS site, the above process will take place exactly. When a sender tries to send a data from plain text it gets encrypted and along with the encryption you also get a mathematical value attached with other wrong values. And while decrypting the data, randomly many values generate and when the correct value matches with the encrypted value then it is decrypted that means now you can read data in plain text.

Between the sender and the receiver the internet uses public network but if it is encrypted you are safer.

HTTPS is very slow compared to HTTP because of all the encryption. And HTTPS uses layer 4 transport layer protocol. The default port in HTTPS is 443.

Also Read: How encryption and decryption works?

Difference between HTTP and HTTPS – Exactly

HTTP stands for Hypertext transfer protocolHTTPS stand for Hypertext transfer protocol secure
Data’s will be transferred in plain text Data’s will de transferred in cipher text
that is encrypted form
HTTP is insecureHTTPS is secure
HTTP sites load fasterHTTPS sites load slower, compared to HTTP
It uses port 80 by default itself It uses port 443 by default
No need for SSL or TLS certificate Need SSL and TLS Certificate
HTTP sites are in high risk from hackersHTTPS sites are in low risk from hackers
Layer 7 protocol is usedLayer 4 Protocol is used


In conclusion, I recommend readers to visit only HTTPS site, suppose you wanted to access an HTTP site then use VPN.

Also Read: What is VPN? How VPN works!

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