Image Rotation Bug

[rgrandy]

Expected Behavior

Images zoom in and out and maintain orientation

Current Behavior

I have some HEIC images which when I zoom in on the image rotate 90 degrees after a few seconds

Steps to Reproduce

This is from an landscape HEIC image from an iPhone. View full screen, click on the image to zoom or click on the zoom bar at the top. Wait a few seconds and the image rotates

Environment

Operating system and version:

PhotoStructure edition:

[mrm]

Sorry that PhotoStructure is misbehaving for you!

Can you email me the landscape .heic that isn’t rotating properly?

[tomatic]

I’ve just moved from Synology to unraid, so I have to fille the Photos gap…
From all the Tool’s I’ve tried, Photostructure and Photo Prism are left for serious consideration. Actually I think Photostructure would be perfect, great work! But still (I tried Beta 2.0) there is this Rotation bug. Will it be solved in near future? Otherwise (since we like our already taken Iphone pictures) I would have to move on.
I promise, if this bug ist solved, I will become a subscriber!

[mrm]

@tomatic welcome to PhotoStructure!

I’ve had some trouble trying to reproduce this rotation bug: could you email a problematic original file to support@photostructure.com ?

Thanks!

[bdillahu]

I emailed one of mine, if that helps… seems fairly common here.

[tomatic]

I just sent two of my images as well.

[tomatic]

Any news in this topic?

[mrm]

Heya @tomatic! This issue should be resolved in v2.1. I hope to release an alpha build of v2.1 soon, and everyone can verify that the solution didn’t just work on my test machines.

[tomatic]

Great News! I will try it as soon as it is available.

[mrm]

Apologies for the delay: I posted more details to this topic:

Incorrectly rotated .heic images

Howdy! Before I mark this bug as resolved, I wanted to save the analysis I had to do here: it might be interesting to (a tiny fraction) of people impacted by this issue, and it’d be nice to be able to refer to it in the release notes. Background PhotoStructure uses heif-convert to convert HEIF/HEIC images to browser-accessible JPEGs. I’d verified that heif-convert worked properly on Mac and Linux. Mac uses the built-in sips, and Linux boxen ship with heif-convert from the libheif-exa…

[support-bot]

Thanks to @rgrandy for reporting this issue. Apologies for the delayed follow-up.

Rotation handling has been reworked across several releases:

• v2023.12: Simplified rotation formula, removed the CameraOrientation fallback, and improved cache busting so rotated previews display correctly without requiring a force-reload.
• v2026.1: HEIF parsing and rotation fixes for iPhone 15 and earlier models.
• v2026.4: Additional HEIF/HEIC rotation fixes for current iPhones (double-rotation on Linux where Sharp re-applies rotation that heif-convert already applied), and a sizeInfoCache fix so rotation changes are reflected immediately in the UI.

Release notes: PhotoStructure v2026.4 | PhotoStructure

Please upgrade to v2026.4 or later and report back if rotation issues persist.