You can do this with a regular expression in a string replacer

The regular expression (photo\\d+) matches any occurrence of the word photo followed by one or more numbers

The replacement text then replaces the matched value with http:// followed by the matched group \\1 followed by /text

@ebygomm

Thanks for your response I am not getting the same results in all feature

let me share the exact value

Before

mdc_photo_mdc_e7669f_cdv_photo_011_1558001156719.jpg,mdc_photo_mdc_0403/textd8_cdv_photo_001_1581000976829.jpg,mdc_photo_mdc_f0f840_cdv_photo_001_1581000976829.jpg,mdc_photo_mdc_2/textecf29_cdv_photo_001_1581000976829.jpg

we should get this

http://mdc_photo_mdc_e7669f_cdv_photo_011_1558001156719.jpg/text,http://mdc_photo_mdc_0403/textd8_cdv_photo_001_1581000976829.jpg/text,http://mdc_photo_mdc_f0f840_cdv_photo_001_1581000976829.jpg/text,http://mdc_photo_mdc_2/textecf29_cdv_photo_001_1581000976829.jpg/text

the expression you shared not giving the right results

as you can see the values are separated by ", "

Well no, you need quite a different regular expression for the actual data :-)

I think this regex might work for you, if all your strings start with mdc and end in .jpg

(mdc.*?.jpg)

A python alternative, which may be safer if the image names are not reliably consistent but are always comma separated

import fme
import fmeobjects

def processFeature(feature):
    attrlist = feature.getAttribute('attribute').split(',')
    newlist = l'http://'+i+'/text' for i in attrlist]
    feature.setAttribute("attribute", ','.join(newlist))

You could of course, also split the attribute with the comma, explode the list, append the characters that you need, then rebuild the attribute but it's a bit inefficient

@ebygomm

Thanks so mutch