[GH-ISSUE #596] Preview picture #453

New issue

Closed

opened 2026-05-07 00:24:18 +02:00 by BreizhHardware · 2 comments

BreizhHardware commented

2026-05-07 00:24:18 +02:00

Owner

Originally created by @fred-gb on GitHub (Jan 30, 2023).
Original GitHub issue: https://github.com/binwiederhier/ntfy/issues/596

Hi,
Just need an explanation.

When I use attach header from URL for a picture.

-H "Attach: https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Flower_July_2011-2_1_cropped.jpg/1200px-Flower_July_2011-2_1_cropped.jpg"

I receive a link to this picture.
Capture d’écran 2023-01-30 à 18 46 20

And when I attach a local picture receive picture preview
Capture d’écran 2023-01-30 à 18 47 21

Why don't have the same behavior? Why I can't see preview from URL?

Thanks

Originally created by @fred-gb on GitHub (Jan 30, 2023). Original GitHub issue: https://github.com/binwiederhier/ntfy/issues/596 Hi, Just need an explanation. When I use attach header from URL for a picture. ``` -H "Attach: https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Flower_July_2011-2_1_cropped.jpg/1200px-Flower_July_2011-2_1_cropped.jpg" ``` I receive a link to this picture. <img width="898" alt="Capture d’écran 2023-01-30 à 18 46 20" src="https://user-images.githubusercontent.com/17061623/215554202-6e14481c-ad26-4df1-9101-de1e1767cb11.png"> And when I attach a local picture receive picture preview <img width="898" alt="Capture d’écran 2023-01-30 à 18 47 21" src="https://user-images.githubusercontent.com/17061623/215554471-43cbac27-35a6-4294-86fc-e7f008798025.png"> Why don't have the same behavior? Why I can't see preview from URL? Thanks

BreizhHardware

2026-05-07 00:24:18 +02:00

closed this issue
added the
question
label

BreizhHardware commented

2026-05-07 00:24:18 +02:00

Author

Owner

@binwiederhier commented on GitHub (Jan 30, 2023):

Embedding a preview from a foreign URL is not possible due to the browsers' cross-origin policies. Unless the other host allows us to embed the image, the image will not display. The only way around this is to upload the file to the ntfy webserver.

The Android app does not have this restriction. This is purely a browser restriction.

@binwiederhier commented on GitHub (Jan 30, 2023): Embedding a preview from a foreign URL is not possible due to the browsers' cross-origin policies. Unless the other host allows us to embed the image, the image will not display. The only way around this is to upload the file to the ntfy webserver. The Android app does not have this restriction. This is purely a browser restriction.

BreizhHardware commented

2026-05-07 00:24:18 +02:00

Author

Owner

@fred-gb commented on GitHub (Jan 30, 2023):

Thanks!

@fred-gb commented on GitHub (Jan 30, 2023): Thanks!

BreizhHardware referenced this issue

2026-05-07 01:01:34 +02:00

[PR #533] [MERGED] Add "Generate topic name" button to "Subscribe to topic" dialog #1322