Can’t figure out HEIC previews

ℹ️ Support
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1

Can’t figure out how to get HEIC previews to work. Does any know how to and if not is there workarounds such as automatically converting HEIC to PNGs for all users?

Thanks in advance for the help!

(Running on Docker container)

2

Hello. I can’t figure out how to get HEIC to preview on nextcloud latest. I have imagemagick installed. It appears they removed it is there any workaround??

(Docker container)

3

Hello fire_alarms ,

welcome to the community of Nextcloud.

You started a topic in support category. Unfortunately you ignored the template and a lot of information to help you is missing. Please add all necessary information like Nextcloud version, webserver type and version, os version, related log file content. use the support template.

Without additional information the community members cannot help you.

use search the topic was discussed few times already:

don’t create duplicate topics!

Regards,
wwe

5

My bad I redid it with the template. Yes I know topics exist but it did not work with docker

6
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The Basics

  • Nextcloud Server version (e.g., 29.x.x):
  • 30.0.1
  • Operating system and version (e.g., Ubuntu 24.04):
  • Docker Desktop (Windows 11 IOT)
  • Web server and version (e.g, Apache 2.4.25):
  • Apache 2.4.63
  • Reverse proxy and version _(e.g. nginx 1.27.2)
  • cloudflare/cloudflared:latest
  • PHP version (e.g, 8.3):
  • 8.3
  • Is this the first time you’ve seen this error? (Yes / No):
  • Yes
  • When did this problem seem to first start?
  • March 19 2025
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
  • Docker image
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
  • yes

Dear mod reading this post:
Yes I know a topic for this exists but it does not work for docker.

Summary of the issue you are facing:

I can’t preview HEIC images. The feature was removed it appears. Is there any way to convert all HEIC or HEIF images for all users to JPEGs? Or get HEIC images to preview some how?

Thanks!

Steps to replicate it (hint: details matter!):

  1. Try to view an HEIC image in nextcloud 31.0.1 docker
  2. Open an HEIC file on nextcloud 31.0.1 docker
  3. Try to get any previews of HEIC and HEIF photos

Log entries

Nextcloud

Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.

Web Browser

If the problem is related to the Web interface, open your browser inspector Console and Network tabs while refreshing (reloading) and reproducing the problem. Provide any relevant output/errors here that appear.

PASTE

Web server / Reverse Proxy

The output of your Apache/nginx/system log in /var/log/____:

PASTE HERE

Configuration

Nextcloud

The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):

PASTE HERE

Apps

The output of occ app:list (if possible).

Tips for increasing the likelihood of a response

  • Use the preformatted text formatting option in the editor for all log entries and configuration output.
  • If screenshots are useful, feel free to include them.
  • If possible, also include key error output in text form so it can be searched for.
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7

I’m running Nextcloud on TrueNAS scale. Installed via the TrueNAS “discover apps” catalogue. It gives me a Dockerized verison of nextcloud 31.0.0.

I’m also struggling with HEIC images…

Unfortunately the Docker image from TrueNAS does not come with imagemagick installed in it, and I havent been able to add it - at least not a recent enough version to support HEIC.

I’m using the NC memories app to browse photos, but since most of my images are HEIC, I can’t really see what I am browsing, as there are no thumnails.

I was so hoping to be able to stop using google photos, but seems like there is still quite a long way before that will be possible.

Following this thread closely to see if any solutions comes out of it ! :slight_smile:

8

I have a feeling that this is not gonna be straight forward solving, and will require a lot of diffficult tinkering, and will probably break down the line as updates are coming in.

So I actually just gave up, and installed “immich” instead, as it natively supports HEIC, plus it has a bunch of other very useful features (facial recognition namely).

But just to be clear, this is an app unrelated to nextcluod, and runs in multiple docker dontainers on my server - outside of nextcloud. It just have access to my photo dir that NC also uses.