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T
Todrk
Participant
January 25, 2019
Answered

Illustrator Resampling HELP!

  • January 25, 2019
  • 1 reply
  • 1833 views

Ok, so a colleague of mine has been working with a client who had sent over some images for printing.

The files he sent were JPEG's but he had not added any bleed. My colleague opened the files in illustrator created a block colour for the bleed element exported as a PDF and didn't think much of it.

It was only when the client came to collect the images that he pointed out that this one was significantly larger than it was supposed to be
(we had asked him to check the sizes were ok on the invoice we had sent) which he paid the following day.
Upon his questioning we re opened the file in Illustrator and sure enough it was exactly the size we had printed, however... when we opened the same image within Photoshop its size was smaller and it had shrunk back down to the size of an A4, (It's intended size).

Please see image size information from photoshop and then Illustrator below;

Now I am capable enough to realise that illustrator has imported the image at 72dpi thus affectively increasing the size of the image by 4x what I am confused about is why? I have been playing around with the file trying to decipher why Illustrator has done this and am at a loss for the answer.

I have tried to recreate the effect without success. Every time that I create an A4 document at 300dpi in Photoshop and save as a JPEG, upon opening in Illustrator it is still sized as A4 at 300dpi as I would expect... so why is this clients image different?

I told my colleague that perhaps it was some obscurity and that our client was using a much older version of photoshop and that for some reason when communicating with the more modern software it was causing this anomaly. However that was quickly found to be false as other files the client sent us in JPG format made for the same event at the same time, were not resampling when imported into Illustrator and had printed at the correct size.


Is anyone able to help me understand why this has happened and why it is only happening with this one image?

I have searched for the answer already and have found other discussions with people detailing similar problems but none of the answers seem to accurately explain why this is happening.

Any help you are able to provide will be much appreciated.

Best

Dan

This topic has been closed for replies.
Correct answer Monika Gause

When they export their images via "Save for web", then those have 72 ppi.

1 reply

Monika Gause
Community Expert
Monika GauseCommunity ExpertCorrect answer
Community Expert
January 25, 2019

When they export their images via "Save for web", then those have 72 ppi.

    T
    TodrkAuthor
    Participant
    January 25, 2019

    Hi Monika,

    Thanks for the reply that has solved half the problem

    Exporting for web as a JPEG and then opening the file does resample it to 72ppi and subsequently increase the size.
    However, when you re open this JPEG in photoshop it is also 72ppi and larger than the original.

    The file we were working in was opening larger in illustrator and its original size in photoshop which is what I am trying to understand.

    Any suggestions?

    Dan

    Monika Gause
    Community Expert
    Monika GauseCommunity Expert
    Community Expert
    February 5, 2019

    Hi Monika,

    Apologies for the late reply, No the pixel dimensions had changed to match the 72ppi enlarged file.


    The screenshots you posted above - is that the image?

    Because:

    Unfortunately the naming conventions in Illustrator and Photoshop don't match, which is not very helpful.

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