Print High Res images

Question

Framemaker 10Windows 7Image editor: GIMP 2.8.10I am trying to insert a high resolution image 3878x1970 px in a document's header. I reduced the image dimensions using shift+Drag to 106x54 px.When I save it as PDF, the image looks pretty pixelated (obviously). My question is: What should I do so the image, when the document is saved as PDF, does not appear pixelated.Please let me know if I need to provide more informationN.B.: Image dimensions cannot be altered        Image has been imported as reference        Using Framemaker since Jun '14, used Word before        Go easy on me &#128578;

Arnis Gubins · Accepted Answer

I do not want the image to appear pixelated when the PDF is zoomed in. This is the reason for picking up such a high res logo. However, even at this high a resolution, when printing to PDF, the image pixelates at mere 400%.

Printing to PDF is no better.

I do not want the image to pixelate when the PDF is zoomed in.

Please help.

The appearance of the image is also affected by the jobotpions file (as mentioned earlier) usd to create the PDF. There are settings that will automatically downsample high-res images and will apply additional jpg (lossy) compressions to pre-existing jpgs - all of which downgrade an image. You need to set these options accordingly.

Also, having a very high-res image increases the load time for the page, which often tends to annoy readers. Something else that you should consider, especially if it is on every page.

If you want to preserve maximum fidelity of a logo at any zoom level, then using vector-based artwork (also already mentioned) should have been the primary consideration (but this will also increase load time as the vectors need to be drawn).

Mike Wickham · Answer

Here's how to resize your bitmapped image in Photoshop. Instructions are

probably similar in GIMP:

1. CtrlAltI to open the Image Size dialog.

First, set the resolution:

2. Uncheck the Resample Image checkbox.

3. If the resolution is not already set where you want it, set the

Resolution dialog to desired pixels per inch. 300 ppi is standard for

documents that will be printed. 72 or 96 ppi is standard for

computer-only display, such as Web pages. You may notice that, when you

change the resolution, Photoshop will do some image size recalculations

of its own, but it does it without throwing away pixels. Changing ppi

merely determines how closely the pixels crowd together when they

display. A 1000-pixel-wide image at 300 ppi will be 3.33" wide. At 72

ppi, the same 1000-pixel-wide image will be 13.88" wide.

Now, set image output size:

4. Check the Constrain Proportions checkbox.

5. Check the Resample Image checkbox.

6. Now you can set your desired new output dimensions in the Document

Size dialog. This is where you would enter your desired image size in

inches.

7. Click OK. Changing image size and resampling does alter the number of

pixels to fit in the desired space, so...

8. SAVE THIS IMAGE TO A NEW FILE. You do not want to overwrite your

original. The new, reduced-size image is likely to have thrown away

pixels that you can never get back if you need them.

It is very important to set the desired resolution BEFORE you change the

image size!

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