Regex Extract Domain From Url Top 18 Favorites

You can use regular expressions (regex) to extract the domain from a URL by matching the pattern of a typical URL and capturing the domain part. Here is an example of how to extract the domain using Python:

python
import re

url = "https://www.example.com/path/to/page.html"

match = re.search(r"https?://([^/]+)", url)
domain = match.group(1)

print(domain)  # output: www.example.com

Explanation:

• The regex pattern https?://([^/]+) matches a string starting with “http://” or “https://”, followed by one or more characters that are not a forward slash (i.e. the domain name), and captures this group.
• The re.search() function searches the url string for a match to the regex pattern.
• The match.group(1) method returns the captured group (i.e. the domain name).

Note: This regex pattern may not work for all types of URLs, particularly those with unusual formats or non-standard characters.

To extract the domain name from a URL using regular expressions (regex), you can use the following pattern:

ruby
^(?:https?:\/\/)?(?:[^@\n]+@)?(?:www\.)?([^:\/\n]+)

This pattern matches the beginning of the string, optional “http://” or “https://”, an optional username and password separated by “@” (which is not included in the matched group), an optional “www.” prefix, and then captures the domain name.

Here’s a breakdown of the pattern:

• ^ matches the start of the string
• (?:https?:\/\/)? matches an optional “http://” or “https://”
• (?:[^@\n]+@)? matches an optional username and password separated by “@”
• (?:www\.)? matches an optional “www.” prefix
• ([^:\/\n]+) matches and captures the domain name, which consists of one or more characters that are not a colon, forward slash, or newline.

Here’s an example of how to use this pattern in Python:

python
import re

url = 'https://www.example.com/path/to/page.html'
pattern = r'^(?:https?:\/\/)?(?:[^@\n]+@)?(?:www\.)?([^:\/\n]+)'

match = re.search(pattern, url)
if match:
    domain = match.group(1)
    print(domain) # Output: example.com

You can use regular expressions (regex) to extract the domain name from a URL. Here’s an example in Python:

python
import re

url = 'https://www.example.com/path/to/page.html'

match = re.search(r'https?://([^/]+)', url)
if match:
    domain = match.group(1)
    print(domain)  # Output: www.example.com

Explanation of the regex pattern:

• https?://: Matches the start of the URL, including the http:// or https:// protocol.
• ([^/]+): Matches one or more characters that are not a forward slash /, which represents the domain name.

The parentheses around [^/]+ create a capturing group, which we can retrieve using the group() method on the match object. The argument 1 to group() specifies that we want the first capturing group, which contains the domain name.

Note that this regex pattern assumes that the URL is in a standard format with the protocol and domain name separated by ://. If you need to handle more complex URLs, you may need to adjust the pattern accordingly.