ZLIB library in PDF engine of Illustrator 2024

Forum|Forum|1 year ago
July 15, 2024
1 reply
627 views

Dear Adobe-Community,

we have noticed that the PDFs created in Illustrator 2022 differ from those created in Illustrator 2024. The difference seems to lie in the use of the ZLIB library. Our subsequent applications now have difficulties processing the PDF files. It usually fails when decompressing the PDF data: "inflate failed, ZLIB error -5: (null)". We suspect that Illustrator 2024 uses a newer PDF engine that uses a newer version of the ZLIB library. Is there any further information on this?

Many thanks in advance.
Best regards
Michael

Import and export

This topic has been closed for replies.

Anubhav M

Community Manager

Hello @MICHAEL36018258rd0l,

Thanks for reaching out. I have checked this with the team, and they confirmed that there have been no major changes to Flate/ZLIB. Would you mind sharing more details about the PDF library you are using so I can check it with them?

Thanks,
Anubhav

M

MICHAEL36018258rd0lAuthor

Participant

Hi Anubhav,

we're using the "pdfresolve"-library from HELIOS to manipulate the PDF files afterwards.

Also I can provide PDFs which work and same PDF which doesn't work.

I even compared the PDF files on low-level, but i didn't find any problems within.

The only way I can explain it is that compression is the cause.

Michael

Anubhav M

Community Manager

Hi Anshul,

can I send the files to you directly? I don't want them to be publish here in the public community.

Michael

Hello @MICHAEL36018258rd0l,

Kindly share a public link to a sample file after uploading it to Dropbox/Google Drive/etc., the exact version of Illustrator 2022/2024 installed, and screenshots / a screen recording of the problem (https://adobe.ly/3Ak2MLk), via DM to Anshul or me, so we can investigate this further.

Looking forward to hearing from you.

Thanks,

Anubhav

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