Cleaning Metadata Without Altering Image
Moderators: helmut, XnTriq, xnview
-
- Posts: 3
- Joined: Thu Jul 07, 2016 5:39 am
Cleaning Metadata Without Altering Image
I clicked Remove All Metadata, but when I Save the file, it is much larger in size so XnView must be reproccessing the image. How can I strip the metadata without altering the image?
-
- Author of XnView
- Posts: 45819
- Joined: Mon Oct 13, 2003 7:31 am
- Location: France
Re: Cleaning Metadata Without Altering Image
in browser, use clean metadata. 'Save' recompress the imagenbrtyyujm wrote:I clicked Remove All Metadata, but when I Save the file, it is much larger in size so XnView must be reproccessing the image. How can I strip the metadata without altering the image?
Pierre.
-
- Posts: 3
- Joined: Thu Jul 07, 2016 5:39 am
Re: Cleaning Metadata Without Altering Image
Using Clean Metadata from the browser doesn't recompress the image? In a hex editor the cleaned file looks different from the original. I was expecting only the beginning of the file where the metadata is to be different.
-
- Moderator & Librarian
- Posts: 6501
- Joined: Sun Sep 25, 2005 3:00 am
- Location: Ref Desk
Re: Cleaning Metadata Without Altering Image
Did you activate Optimize (Huffman table)?nbrtyyujm wrote:Using Clean Metadata from the browser doesn't recompress the image? In a hex editor the cleaned file looks different from the original. I was expecting only the beginning of the file where the metadata is to be different.
Calvin Hass ([url=http://www.impulseadventure.com/photo/optimized-jpeg.html]What is an Optimized JPEG?[/url] » Does JPEG Optimization affect Image Quality?) wrote:No! The huffman table optimization is a lossless (reversible) process that has absolutely no effect on the resulting image quality. If one has the option, it is almost always best to enable JPEG optimization. The extra file size savings can't hurt. However, as it may potentially reduce compatibility with some bad JPEG decoders, this may be enough of a reason for you to disable it.
-
- Posts: 3
- Joined: Thu Jul 07, 2016 5:39 am
Re: Cleaning Metadata Without Altering Image
The only item activated is EXIF. Everything else is unselected.
-
- Moderator & Librarian
- Posts: 6501
- Joined: Sun Sep 25, 2005 3:00 am
- Location: Ref Desk
Re: Cleaning Metadata Without Altering Image
Bug confirmed 
I used FujiFilm FinePixS1Pro (1).jpg and CompareIt! (Find moved sections & Align mode activated) for my tests.

I used FujiFilm FinePixS1Pro (1).jpg and CompareIt! (Find moved sections & Align mode activated) for my tests.
You do not have the required permissions to view the files attached to this post.
-
- Author of XnView
- Posts: 45819
- Joined: Mon Oct 13, 2003 7:31 am
- Location: France
Re: Cleaning Metadata Without Altering Image
when you use 'Clean metadata' in browser mode?XnTriq wrote:Bug confirmed![]()
Pierre.
-
- Moderator & Librarian
- Posts: 6501
- Joined: Sun Sep 25, 2005 3:00 am
- Location: Ref Desk
Re: Cleaning Metadata Without Altering Image
Yes, in the browser. (cmd_CleanMetadata isn't available in view mode, I believe.)xnview wrote:when you use 'Clean metadata' in browser mode?