Participant

Question

Placed jpg resizing and placed png pixelated

Forum|Forum|8 years ago
April 2, 2018
4 replies
1991 views

I have an InDesign WEB document set to 1009 px X 662 px because I'm designing pages to be used in Lectora. When I try to place a .jpg that is say 400 px X 300 px, it shrinks it to 96 px X 72 px. Why is this?

Also, although my placed .png images retaining the correct size, they show up AS IF the Display Performance is not set to high quality, which it is.

This topic has been closed for replies.

T

Test Screen Name

Legend

That's an excellent point, Rob. JPEG would be damaging for no point at all. I think I see what the aim is, here - to use the clever optimisations and preview of Save for Web, then place into InDesign. But InDesign will uncompress, resize and the final result will be recompressed, so the Save for Web is not only wrong for resolution, it is misleading and damaging for quality.

EoinWinston

Known Participant

So would using the likes of www.compressor.io to reduce file sizes be a bad idea. I have a large document with multiple retina size images (maybe 60 in total) I am saving out JPEG @ 100% and then using the online tool to reduce file sizes. Is that a bad idea? Would PSD files be better?

rob day

Community Expert

I have a large document with multiple retina size images (maybe 60 in total) I am saving out JPEG @ 100% and then using the online tool to reduce file sizes. Is that a bad idea? Would PSD files be better?

Do you mean you are placing JPEGS into InDesign, exporting a new JPEG version from InDesign, and then compressing yet again using the online tool? Every time you save a JPEG, new compression artifacts are introduced. They might not be noticeable if the quality setting is at the highest for all of the iterations, but it's not a great work flow.

The ideal is to capture the image in a lossless format like CameraRAW or TIFF and export once to JPEG for the end use.

If you were to export a low quality JPEG and use the online compressor to make another compression the compression artifacts from the first export to JPEG would still be visible in the new file.

Also InDesign's export to JPEG has some known quality issues with placed images. It's better to export to PDF/X-4 and open into Photoshop if best quality is important.

T

Test Screen Name

Legend

So, I think we agree, nothing is wrong. Use Save As, not the unsuitable methods you use now.

rob day

Community Expert

Placing any kind of JPEG whether it's via Save As, Save for Web (Legacy), or Export would have the downside of a double compression when the InDesign page gets exported either to a composite image format or fixed EPUB, which is what it sounds like Ryan is exporting to?

I would place PSDs and make sure the listed Effective Resolution of the scaled images doesn't fall below the final export resolution.

R

ryans56309879Author

Participant

Export As has been the solution to my situation. Save As was not working either. I was having to make one image file that worked in my InDesign mockup as well as then being able to be placed into another program, Lectora, by a different user.

T

Test Screen Name

Legend

Yes... so if the images are for use in InDesign, save for web is the wrong tool - even if later the results go to the web. Save for web is for images used on the web site directly only.

rob day

Community Expert

When I try to place a .jpg that is say 400 px X 300 px, it shrinks it to 96 px X 72 px. Why is this?

What you are describing would happen if you saved the JPEG at 300ppi

Make sure the 400x300 pixel JPEG's resolution is 72ppi. InDesign's Pixel ruler unit has a set output dimension of 1/72". You are getting the dimension of the JPEG's container frame in pixels and not the image's pixel dimensions. Select the image and check the Links panel to get pixel dimensions and resolution.

R

ryans56309879Author

Participant

Why on Earth is Ps taking my 400px x 300px @ 72ppi image and changing it to 300ppi when I use Save For Web? Your comment had me go look and sure enough, my images are at 300ppi despite creating them at 72ppi. I had to Save As to get it to stop doing that. I would have thought Save For Web would have done the opposite—changing a 300ppi to a 72ppi.

rob day

Community Expert

What version of PS. Both the Export and Save for Web (Legacy) are exporting to 72ppi for me.

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