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](http://labs.apache.org/webarch/uri/rfc/rfc3986.html#regexp) (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](http://yellow5.us/firefox/linkification/)) — Boldewyn, Nov 25 '10 at 09:55
Also see http://stackoverflow.com/questions/4252778/put-urls-from-string-into-array-using-regex-problem-with-trailing-period/4252806#4252806 for a very generic solution. — martineno, Nov 25 '10 at 10:04
[What is a good regular expression to match a URL?](https://stackoverflow.com/questions/3809401/what-is-a-good-regular-expression-to-match-a-url) — Rajat, Sep 07 '21 at 11:40
https://stackoverflow.com/questions/3809401/what-is-a-good-regular-expression-to-match-a-url — Rajat, Sep 07 '21 at 11:40

score 15 · Accepted Answer · answered Nov 25 '10 at 09:40

15

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

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

answered Nov 25 '10 at 09:40

Bart Kiers

166,582
36
299
288

1

Thank you but now I can match for example "example" or "example@example.com". 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 "example@example.com" or "example" – Guest Nov 25 '10 at 10:18
`example@example.com` 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`. – Boldewyn Nov 25 '10 at 11:30
I don't want to accept @ in my urls. Do you know how I can change my regex? – Guest Nov 26 '10 at 08:29

score 4 · Answer 2 · answered Jan 25 '12 at 08:31

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 '12 at 08:31

Rajiv Aggarwal

49
1

3

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. – Simon Ludwig Jun 01 '16 at 23:19
2

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... – Askdesigners Sep 13 '16 at 14:46
TLDs can be between 2 and (currently the longest TLD is) 24 characters long (https://stackoverflow.com/questions/9238640/how-long-can-a-tld-possibly-be/9239264). `/^(?:(ftp|http|https):\/\/)?(?:[\w-]+\.)+[a-z]{2,24}$/` – Rillus Jan 05 '22 at 12:07

udaykrishna · Answer 3 · 2015-05-08T11:45:40.720

3

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 08 '15 at 11:45

answered Apr 22 '15 at 12:04

udaykrishna

31
3

score 1 · Answer 4 · edited Apr 13 '17 at 12:38

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 '17 at 12:38

Community

1
1

answered Oct 03 '12 at 07:24

score 1 · Answer 5 · answered Aug 13 '21 at 07:31

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 '21 at 07:31

Ali Raza

670
5
15

score 0 · Answer 6 · answered Jun 20 '22 at 10:28

0

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 '22 at 10:28

Ruslan Korkin

3,973
1
27
23

Regex for urls without http, https, ftp

6 Answers6