How to extract the source of a webpage without tags using bash?

We can download the source of the page using wget or curl , but I want to extract the source of the page without tags. I mean extract it as text.

You can pipe to a simple sed command :

curl www.gnu.org | sed 's/<\/*[^>]*>//g'

Using Curl, Wget and Apache Tika Server (locally) you can parse HTML into simple text directly from the command line.

First, you have to download the tika-server jar from the Apache site: https://tika.apache.org/download.html

Then, run it as a local server:

$ java -jar tika-server-1.12.jar

After that, you can start parsing text using the following url:

http://localhost:9998/tika

Now, to parse the HTML of webpage into simple text:

 $ wget -O test.html YOUR-HTML-URL && curl -H "Accept: text/plain" -T test.html http://localhost:9998/tika

That should return the webpage text without tags.

This way you're using wget to download and save your desired webpage to "test.html" and then you use curl to send a request to the tika server in order to extract the text. Notice that it's necessary to send the header "Accept: text/plain" because tika can return several formats, not just plain text.