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When copying and pasting images, is all the quality maintained?

Outlook 2007 - repainting (?) problems when copying and pasting between windows: have to switch focus before pasted text is visibleRe-saved images have noticeably lower quality in any formatResize images via drag and drop on OSX with good qualityresize image without image quality reductionHow can I edit banknote images in Photoshop CS?How does copying and pasting realise and reveal a webpage's formatting?Secondary hard disk drive spins up when copying/pasting large amounts of dataPhotoshop CC (Creative Cloud) Blurry Images When Reducing SizePhotoshop, black color instead of transparency when pasting from clipboardHow does a website prevent the pasting of a password or email address?

0

0

When copying and pasting is 100% of the data maintained? For example In Firefox, on Windows, when copying an image and pasting it into Photoshop, is the quality the same then if you did the long way and saved the image and reopened it in Photoshop?

windows-7 firefox adobe-photoshop copy-paste

share|improve this question

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

bumped to the homepage by Community♦ 3 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  When you perform a copy of a file a new copy of the file is create identical to the original. It can even have the same filename if its not in the same folder.
  
  – Ramhound
  Jun 4 '15 at 17:46
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I do believe some quality is lost because Windows re-encodes it ...hence the famous JPEG pixelation issues that arise from it being copy/pasted from different sources.
  
  – Nathan C
  Jun 4 '15 at 17:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  How do you go about 'copying' the image from Firefox into Photoshop without first saving the image? I mean, are you using an extension in Firefox to grab the image data or are you just using the Print Screen functionality of Windows? If it's the later, then yes, you could lose data since Windows encodes the screen capture in a different format than what the image itself might be ..
  
  – txtechhelp
  Jun 4 '15 at 17:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  My understanding is that it depends on the nature of the source. A full size image can be embedded and displayed at a smaller size. I've experienced it both ways. Right-clicking the image sometimes copies the original, full resolution image, and sometimes just the rendering on the page. You may need to try it and see what you get on a case by case basis.
  
  – fixer1234
  Jun 4 '15 at 18:04
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @NathanC: There's no quality loss while simply copy pasting. The loss occurs only when saving using a lossy format.
  
  – Karan
  Jun 4 '15 at 19:21
  

  
  
  
  

 | 
show 3 more comments

0

0

When copying and pasting is 100% of the data maintained? For example In Firefox, on Windows, when copying an image and pasting it into Photoshop, is the quality the same then if you did the long way and saved the image and reopened it in Photoshop?

windows-7 firefox adobe-photoshop copy-paste

share|improve this question

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

bumped to the homepage by Community♦ 3 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  When you perform a copy of a file a new copy of the file is create identical to the original. It can even have the same filename if its not in the same folder.
  
  – Ramhound
  Jun 4 '15 at 17:46
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I do believe some quality is lost because Windows re-encodes it ...hence the famous JPEG pixelation issues that arise from it being copy/pasted from different sources.
  
  – Nathan C
  Jun 4 '15 at 17:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  How do you go about 'copying' the image from Firefox into Photoshop without first saving the image? I mean, are you using an extension in Firefox to grab the image data or are you just using the Print Screen functionality of Windows? If it's the later, then yes, you could lose data since Windows encodes the screen capture in a different format than what the image itself might be ..
  
  – txtechhelp
  Jun 4 '15 at 17:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  My understanding is that it depends on the nature of the source. A full size image can be embedded and displayed at a smaller size. I've experienced it both ways. Right-clicking the image sometimes copies the original, full resolution image, and sometimes just the rendering on the page. You may need to try it and see what you get on a case by case basis.
  
  – fixer1234
  Jun 4 '15 at 18:04
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @NathanC: There's no quality loss while simply copy pasting. The loss occurs only when saving using a lossy format.
  
  – Karan
  Jun 4 '15 at 19:21
  

  
  
  
  

 | 
show 3 more comments

When copying and pasting is 100% of the data maintained? For example In Firefox, on Windows, when copying an image and pasting it into Photoshop, is the quality the same then if you did the long way and saved the image and reopened it in Photoshop?

windows-7 firefox adobe-photoshop copy-paste

share|improve this question

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

share|improve this question

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

share|improve this question

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

asked Jun 4 '15 at 17:45

CeleritasCeleritas

3,9962283133

3 Answers
3

active

oldest

votes

0

Theoretically there is no compression on the clipboard.

How ever in some cases, you can loose the quality like screenshot, some image format or bugs like this one

Tools like Clipx could help

share|improve this answer

answered Jun 4 '15 at 18:08

intikaintika

744316

add a comment | 

0

When you copy a file using the operating system there is no recompression and no further loss. That is because you are copying the whole thing and not doing any processing on it.

On the other hand, if you load the image file into an editor and then save, you will loose something unless you are using a lossless format.

So when you copy a file into the Windows clipboard, you should be copying all of the data without interpretation and should not loose anything. Of course, when you then save the file, you will loose something at that point.

This really only applies to JPEG files and not normally to GIF or PNG since they will generally be treated in a lossless way unless some other optimisation is applied.

share|improve this answer

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Regarding GIF/PNG one important thing to keep in mind is that depending on the image editor used transparency and alpha channels can be lost.
  
  – Karan
  Jun 4 '15 at 19:19
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks @Karan, that is true. Of course, if you come across such a tool, I would recommend getting rid of it! It is also worth checking if your image editor correctly handles any metadata which is also easily lost.
  
  – Julian Knight
  Jun 4 '15 at 19:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, Paint for one is commonly used even though we know how limited it is. :)
  
  – Karan
  Jun 4 '15 at 19:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Urgh! Indeed, makes me shudder when I see someone using it, especially at work.
  
  – Julian Knight
  Jun 4 '15 at 19:32
  

  
  
  
  

add a comment | 

0

It depends on the type of image and the data contained within it, but looking at the source code that handles the "Copy Image" functionality on Windows as well as looking at how the Windows clipboard API works, there is a conversion done on the data to put it on the Windows clipboard, more specifically, Firefox puts the image into a BMP MIME type (via this line of code nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/bmp", &rv);, and while they support the DIBV5 format (which gives more color space and alpha information), I suspect there's a bug elsewhere or the encoding need be changed in the code to support more formats (like GIF/PNG with transparency). As it turns out the transparency loss has been a known bug for some time now without resolve.

So while you might not see image quality degrade for most of the images on the web, to answer more directly: no, 100% of the data is not maintained when you do a "Copy Image" vs. "Save Image As.." (especially for image types with transparency).

I hope that can help

share|improve this answer

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219

add a comment | 

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0

Theoretically there is no compression on the clipboard.

How ever in some cases, you can loose the quality like screenshot, some image format or bugs like this one

Tools like Clipx could help

share|improve this answer

answered Jun 4 '15 at 18:08

intikaintika

744316

add a comment | 

0

Theoretically there is no compression on the clipboard.

How ever in some cases, you can loose the quality like screenshot, some image format or bugs like this one

Tools like Clipx could help

share|improve this answer

answered Jun 4 '15 at 18:08

intikaintika

744316

add a comment | 

Theoretically there is no compression on the clipboard.

How ever in some cases, you can loose the quality like screenshot, some image format or bugs like this one

Tools like Clipx could help

share|improve this answer

answered Jun 4 '15 at 18:08

intikaintika

744316

share|improve this answer

answered Jun 4 '15 at 18:08

intikaintika

744316

answered Jun 4 '15 at 18:08

intikaintika

744316

answered Jun 4 '15 at 18:08

intikaintika

744316

0

When you copy a file using the operating system there is no recompression and no further loss. That is because you are copying the whole thing and not doing any processing on it.

On the other hand, if you load the image file into an editor and then save, you will loose something unless you are using a lossless format.

So when you copy a file into the Windows clipboard, you should be copying all of the data without interpretation and should not loose anything. Of course, when you then save the file, you will loose something at that point.

This really only applies to JPEG files and not normally to GIF or PNG since they will generally be treated in a lossless way unless some other optimisation is applied.

share|improve this answer

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Regarding GIF/PNG one important thing to keep in mind is that depending on the image editor used transparency and alpha channels can be lost.
  
  – Karan
  Jun 4 '15 at 19:19
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks @Karan, that is true. Of course, if you come across such a tool, I would recommend getting rid of it! It is also worth checking if your image editor correctly handles any metadata which is also easily lost.
  
  – Julian Knight
  Jun 4 '15 at 19:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, Paint for one is commonly used even though we know how limited it is. :)
  
  – Karan
  Jun 4 '15 at 19:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Urgh! Indeed, makes me shudder when I see someone using it, especially at work.
  
  – Julian Knight
  Jun 4 '15 at 19:32
  

  
  
  
  

add a comment | 

0

When you copy a file using the operating system there is no recompression and no further loss. That is because you are copying the whole thing and not doing any processing on it.

On the other hand, if you load the image file into an editor and then save, you will loose something unless you are using a lossless format.

So when you copy a file into the Windows clipboard, you should be copying all of the data without interpretation and should not loose anything. Of course, when you then save the file, you will loose something at that point.

This really only applies to JPEG files and not normally to GIF or PNG since they will generally be treated in a lossless way unless some other optimisation is applied.

share|improve this answer

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Regarding GIF/PNG one important thing to keep in mind is that depending on the image editor used transparency and alpha channels can be lost.
  
  – Karan
  Jun 4 '15 at 19:19
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks @Karan, that is true. Of course, if you come across such a tool, I would recommend getting rid of it! It is also worth checking if your image editor correctly handles any metadata which is also easily lost.
  
  – Julian Knight
  Jun 4 '15 at 19:29
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, Paint for one is commonly used even though we know how limited it is. :)
  
  – Karan
  Jun 4 '15 at 19:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Urgh! Indeed, makes me shudder when I see someone using it, especially at work.
  
  – Julian Knight
  Jun 4 '15 at 19:32
  

  
  
  
  

add a comment | 

When you copy a file using the operating system there is no recompression and no further loss. That is because you are copying the whole thing and not doing any processing on it.

On the other hand, if you load the image file into an editor and then save, you will loose something unless you are using a lossless format.

So when you copy a file into the Windows clipboard, you should be copying all of the data without interpretation and should not loose anything. Of course, when you then save the file, you will loose something at that point.

This really only applies to JPEG files and not normally to GIF or PNG since they will generally be treated in a lossless way unless some other optimisation is applied.

share|improve this answer

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

share|improve this answer

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

answered Jun 4 '15 at 18:45

Julian KnightJulian Knight

12.9k11535

0

It depends on the type of image and the data contained within it, but looking at the source code that handles the "Copy Image" functionality on Windows as well as looking at how the Windows clipboard API works, there is a conversion done on the data to put it on the Windows clipboard, more specifically, Firefox puts the image into a BMP MIME type (via this line of code nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/bmp", &rv);, and while they support the DIBV5 format (which gives more color space and alpha information), I suspect there's a bug elsewhere or the encoding need be changed in the code to support more formats (like GIF/PNG with transparency). As it turns out the transparency loss has been a known bug for some time now without resolve.

So while you might not see image quality degrade for most of the images on the web, to answer more directly: no, 100% of the data is not maintained when you do a "Copy Image" vs. "Save Image As.." (especially for image types with transparency).

I hope that can help

share|improve this answer

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219

add a comment | 

0

It depends on the type of image and the data contained within it, but looking at the source code that handles the "Copy Image" functionality on Windows as well as looking at how the Windows clipboard API works, there is a conversion done on the data to put it on the Windows clipboard, more specifically, Firefox puts the image into a BMP MIME type (via this line of code nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/bmp", &rv);, and while they support the DIBV5 format (which gives more color space and alpha information), I suspect there's a bug elsewhere or the encoding need be changed in the code to support more formats (like GIF/PNG with transparency). As it turns out the transparency loss has been a known bug for some time now without resolve.

So while you might not see image quality degrade for most of the images on the web, to answer more directly: no, 100% of the data is not maintained when you do a "Copy Image" vs. "Save Image As.." (especially for image types with transparency).

I hope that can help

share|improve this answer

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219

add a comment | 

It depends on the type of image and the data contained within it, but looking at the source code that handles the "Copy Image" functionality on Windows as well as looking at how the Windows clipboard API works, there is a conversion done on the data to put it on the Windows clipboard, more specifically, Firefox puts the image into a BMP MIME type (via this line of code nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/bmp", &rv);, and while they support the DIBV5 format (which gives more color space and alpha information), I suspect there's a bug elsewhere or the encoding need be changed in the code to support more formats (like GIF/PNG with transparency). As it turns out the transparency loss has been a known bug for some time now without resolve.

So while you might not see image quality degrade for most of the images on the web, to answer more directly: no, 100% of the data is not maintained when you do a "Copy Image" vs. "Save Image As.." (especially for image types with transparency).

I hope that can help

share|improve this answer

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219

share|improve this answer

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219

answered Jun 12 '15 at 2:24

txtechhelptxtechhelp

3,09211219