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Storing Container Externally Generates Larger Extra JPEG Images

Question asked by eric on Jul 17, 2013
Latest reply on Dec 4, 2017 by TSGal

Summary

Storing Container Externally Generates Larger Extra JPEG Images

Product

FileMaker Pro

Version

12.x

Operating system version

Mac OS 10.6.8, etc.

Description of the issue

When storing modestly-sized external images and PDFs, FileMaker Pro also generates identical JPEGs, which sometimes consume several times the storage space as the originals.

E.g.: https://fmdev.filemaker.com/message/120288

Steps to reproduce the problem

I'm storing megapixel black and white TIFFs externally, less than 35 KB each. The storage is on FileMaker Server Advanced.
Right-click, "Insert Picture..." to insert the TIFF.

https://fmdev.filemaker.com/message/120288

Expected result

I expect the server to store the TIFF original on the server and nothing else, unless I specify storage of thumbnails. (I turned off generation of thumbnails.)
If FileMaker Server or Pro is supposed to generate an extra JPEG that is useful for something, at least the extra JPEG file should be less than half the storage size as the original. Still, I would expect this extra JPEG to be optional.

Actual result

When I insert a TIFF, it also generates an identical JPEG—except the JPEG is consuming 20 times the storage size as the TIFF!
Having over a million of these to insert grossly abuses server disk space.

https://fmdev.filemaker.com/message/120288

Exact text of any error message(s) that appear

No error messages until someone unexpectedly fills up the server disk.

Workaround

The workaround is not to use FileMaker Pro's new external storage for containers feature, but to use some other calculated location method that worked in version 11.

Outcomes