I suppose that the following regex S/R sould do the job !

SEARCH (?-is)(?:<img\x20+src="\K|\G)(?:\x20*([^"\x20\r\n]+)|\x20+)

REPLACE \1

Remarks :

• Due to the \G syntax, the initial location of the cursor must not be followed with space characters

• Tick the Wrap around option

• Select the Regular expression search mode

• Because of the \K syntax, click on the Replace All button, exclusively. ( Do not use the Replace button ! )

Notes :

• If we use the Free-spacing mode (?x), this regex can be expressed as :

(?x-is) (?: <img \x20+ src="  \K  | \G )  (?: \x20*  ( [^"\x20\r\n]+ )  |  \x20+ )

• So the regex engine is looking for a string <img src=", first, with this exact case

• Then , due the \K syntax, anything being matched, so far, is canceled and the regex engine, now, searches, either, for :

  • A non-null range of non-space characters, possibly preceded by space chars

  • A non-null range of space characters

• Then, due the \G syntax, it searches, for the same ranges, as above, right after the location of the last match. If a match cannot be found, it tries, again, to find an other string <img src=" and so on…

• Note that the (?:...........) structures are non-capturing groups which do not store anything for further use, either, in search and/or replacement !

• In replacement, we only rewrite the non-space characters [^"\x20\r\n]+ stored in group 1

Best Regards,

guy038