# Blank thumbnails

**URL:** <https://talk.observablehq.com/t/blank-thumbnails/1551>\
**Category:** Uncategorized\
**Created:** [January 5, 2019, 4:51pm UTC](https://talk.observablehq.com/t/blank-thumbnails/1551 "2019-01-05T16:51:28Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![mootari](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.observablehq.com/mootari/32/581_2.png) [@mootari](https://talk.observablehq.com/u/mootari)\
**Post date:** [January 17, 2019, 3:30pm UTC](https://talk.observablehq.com/t/blank-thumbnails/1551/21 "2019-01-17T15:30:57Z")

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Thanks! And again, a fork’s thumbnail appears almost immediately. …

@mbostock @tom Possible bug in thumbnail generation, tldr:

- Thumbnail for [https://beta.observablehq.com/@martien/flower](https://beta.observablehq.com/@martien/flower) does not generate despite multiple updates,
- thumbnails for vanilla forks of the notebook generate almost immediately.

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