Regex for urls without http, https, ftp

Question

I'm looking for a regex that accept urls like these:

http://www.example.com
www.example.com

This is what I have so far, but it regex doesn't match URLs without http:// or https://, or ftp://:

regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/;

How can I make the protocol optional?

In the OP's case unfortunately not. It will either be consumed by the regex or not. RFC 3986 (the link leads to a regexp to parse URLs) has its reasons to enforce either a scheme or the `\` part. Although I understand the need to find such stuff (see the Linkification addon for FF) — Boldewyn
– Boldewyn, Commented Nov 25, 2010 at 9:55
Also see stackoverflow.com/questions/4252778/… for a very generic solution. — martineno
– martineno, Commented Nov 25, 2010 at 10:04

Bart Kiers · Accepted Answer · 2010-11-25 09:40:10Z

16

Make the (ftp|http|https):\/\/ part optional:

((ftp|http|https):\/\/)?

answered Nov 25, 2010 at 9:40

Bart Kiers

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3 Comments

Guest Over a year ago

Thank you but now I can match for example "example" or "[email protected]". And I don't want it. So how can I solve this? My regex: regexp = /((ftp|http|https):\/\/)?(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/; I dont't want to match "[email protected]" or "example"

Boldewyn Over a year ago

[email protected] is actually a valid URL: The first example is a username, that can be submitted this way. Try loading this very page with an added example@ between http:// and stackoverflow.com.

Guest Over a year ago

I don't want to accept @ in my urls. Do you know how I can change my regex?

Rajiv Aggarwal · Accepted Answer · 2012-01-25 08:31:06Z

4

Try this this will validate url with (http,ftp,https) or without(http,ftp,https)..

/^(?:(ftp|http|https):\/\/)?(?:[\w-]+\.)+[a-z]{3,6}$/;

answered Jan 25, 2012 at 8:31

Rajiv Aggarwal

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3 Comments

Simon Ludwig Over a year ago

This regex do not accept url for domains from germany. e.g (www.germany.de). You have to change the regex to /^(?:(ftp|http|https):\/\/)?(?:[\w-]+\.)+[a-z]{2,6}$/; The 2 is important.

Askdesigners Over a year ago

This is not such a great way to do this. Really all you can do is check for a .. There are a lot of new TLDs with names longer than 6 chars...

Rillus Over a year ago

TLDs can be between 2 and (currently the longest TLD is) 24 characters long (stackoverflow.com/questions/9238640/…). /^(?:(ftp|http|https):\/\/)?(?:[\w-]+\.)+[a-z]{2,24}$/

udaykrishna · Accepted Answer · 2015-05-08 11:45:40Z

4

Try this this will validate url with or without(http,ftp,https) in upper and lower cases and also allows you to for numerics

/^(?:(ftp|http|https)?:\/\/)?(?:[\w-]+\.)+([a-z]|[A-Z]|[0-9]){2,6}$/gi;

edited May 8, 2015 at 11:45

answered Apr 22, 2015 at 12:04

udaykrishna

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Comments

Ruslan Korkin · Accepted Answer · 2022-06-20 10:28:19Z

3

You can use the next reg: ^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$

Here is an example: https://www.regextester.com/93652

answered Jun 20, 2022 at 10:28

Ruslan Korkin

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Comments

Community · Accepted Answer · 2017-04-13 12:38:59Z

1

Kindly see https://codegolf.stackexchange.com/a/480/6593

Quoting from the above link:

value = 'www.google.com';
if(/(^|\s)((https?:\/\/)?[\w-]+(\.[\w-]+)+\.?(:\d+)?(\/\S*)?)/gi.test(value)) {
            return true;
        } else {
            return false;
        }

edited Apr 13, 2017 at 12:38

CommunityBot

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answered Oct 3, 2012 at 7:24

user216084

Comments

Ali Raza · Accepted Answer · 2021-08-13 07:31:44Z

1

regex accept url without http or https

[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@%_\+.~#?&//=]*)

In HTML5

<input pattern="[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@%_\+.~#?&//=]*)" type="text>

answered Aug 13, 2021 at 7:31

Ali Raza

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1 Comment

Qasim Over a year ago

The HTML5 string givves an error that the pattern is invalid

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