AutoIt

Extract data:image/png;base64 from HTML

See more Base64 Examples

Demonstrates how to extract base64 image data from HTMl and save to files. AutoIt

Local $bSuccess = False

$oSb = ObjCreate("Chilkat.StringBuilder")
$oBd = ObjCreate("Chilkat.BinData")
$oSbFilename = ObjCreate("Chilkat.StringBuilder")
Local $index = 1

$bSuccess = $oSb.LoadFile("qa_data/html/oresp body.txt","utf-8")
; Assume success.
ConsoleWrite("length = " & $oSb.Length & @CRLF)

Local $bMayHaveMore = True
While $bMayHaveMore = True

    ; Get the base64 between the 1st occurrence "data:image/png;base64," and "'"
Local $sBase64 = $oSb.GetBetween("data:image/png;base64,","'")

    ; If nothing is found, then we'll exit the loop because there are no more.
    $bMayHaveMore = $oSb.LastMethodSuccess

    If ($oSb.LastMethodSuccess = True) Then
        ; Found something.
        ; Load into bd and save.
        $bSuccess = $oBd.LoadEncoded($sBase64,"base64")

        $oSbFilename.SetString("qa_output/png_")
        $oSbFilename.AppendInt($index)
        $oSbFilename.Append(".png")

        $oBd.WriteFile($oSbFilename.GetAsString())

        ; Replace "data:image/png;base64" with "data:image-png;base64" so the next iteration finds the next occurrence.
        $oSb.ReplaceFirst("data:image/png;base64","data:image-png;base64")
    EndIf

    $index = $index + 1
Wend

; Restore our replacements..
Local $iCount = $oSb.Replace("data:image-png;base64","data:image/png;base64")

ConsoleWrite("All done." & @CRLF)