ExifTool Forum

ExifTool => The "exiftool" Application => Topic started by: Mehdi on October 21, 2020, 02:51:31 PM

Title: how i copy maker tag from a file to another and how delet all photoshop tags
Post by: Mehdi on October 21, 2020, 02:51:31 PM
hi evreyone ..can you please helps me

want to copy maker tag from a jpg tp another jpg


(https://ibb.co/Gtgtjvy)

and delet all photoshop tags ..im not good on exiftool commands I delet it from Modify/Remove metadata /-photoshop:all but when i test it on Jpegsnoop they detect photoshop tags and that pic save from photoshop



  Searching Compression Signatures: (3347 built-in, 0 user(*) )

          EXIF.Make / Software        EXIF.Model                            Quality           Subsamp Match?
          -------------------------   -----------------------------------   ----------------  --------------
     SW :[Adobe Photoshop          ]                                       [Save As 12      ]                 

  Based on the analysis of compression characteristics and EXIF metadata:

  ASSESSMENT: Class 2 - Image has high probability of being processed/edited


is there some why to remove or change the Compression Signatures from a picture ?
and thank you
Title: Re: how i copy maker tag from a file to another and how delet all photoshop tags
Post by: StarGeek on October 21, 2020, 03:00:27 PM
"Compression Signatures" are not tags embedded in the file, it's the way the image was compressed.  It's not something you can remove.  You can re-compress the file (losing image data) with a different program, but then it will have a compression signature for that program.

This JpegSnoop page (https://www.impulseadventure.com/photo/jpeg-snoop-identify-edited-photos.html) has some more details about compression signatures.
Title: Re: how i copy maker tag from a file to another and how delet all photoshop tags
Post by: Mehdi on October 21, 2020, 03:11:44 PM
is there some programe if you re-compress the file not detected as photoshop edited

and please can you help me about maker tag i want to copy maker tag from a jpg to another https://ibb.co/Gtgtjvy
Title: Re: how i copy maker tag from a file to another and how delet all photoshop tags
Post by: StarGeek on October 21, 2020, 03:48:03 PM
Quote from: Mehdi on October 21, 2020, 03:11:44 PM
is there some programe if you re-compress the file not detected as photoshop edited

You'll have to google and test other programs.  But as I said, this will just give them a signature for that program.  And it will still probably show up in jpegsnoop as "edited"

Quoteand please can you help me about maker tag i want to copy maker tag from a jpg to another https://ibb.co/Gtgtjvy

See FAQ #23 (https://exiftool.org/faq.html#Q23) (near the end), which will then point you to FAQ #8.