Text Processingflags: gi

Non-Capturing Group (Image URL)

Use non-capturing groups `(?:...)` to alternate without polluting the captured-groups list.

Available in

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("(?:https?:\\/\\/)\\S+\\.(?:jpg|jpeg|png|gif|webp|svg)", "gi");
const input = "Logo at https://example.com/logo.png and https://cdn.io/img.svg";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

Python (re) code

pyPython

import re

pattern = re.compile(r"(?:https?:\/\/)\S+\.(?:jpg|jpeg|png|gif|webp|svg)", re.IGNORECASE)
input_text = "Logo at https://example.com/logo.png and https://cdn.io/img.svg"
for m in pattern.finditer(input_text):
    print(m.group(0))

Stdlib `re` module — no third-party dependency. Works on Python 3.6+.

Go (RE2) code

goGo

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`(?i)(?:https?:\/\/)\S+\.(?:jpg|jpeg|png|gif|webp|svg)`)
	input := `Logo at https://example.com/logo.png and https://cdn.io/img.svg`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}

Uses `regexp.MustCompile` (panics on bad patterns at startup) and `FindAllString` for all matches.

Pattern

regexengine-agnostic

(?:https?:\/\/)\S+\.(?:jpg|jpeg|png|gif|webp|svg)   (flags: gi)

Raw source: (?:https?:\/\/)\S+\.(?:jpg|jpeg|png|gif|webp|svg)

How it works

(?:https?:\/\/) groups the protocol options without capturing them — useful when you only care about matching, not extracting. \S+ matches the non-whitespace URL body. \.(?:jpg|jpeg|png|gif|webp|svg) matches the dot and extension via another non-capturing group. The pattern has zero capture groups; switch to `(...)` if you need to extract pieces.