Can't get the featured_image to show as thumbail on my page.

[zareki]

I am very new to Hugo and the theme in general. I have followed tutorials and managed to deploy this site:

site.example

However, I can't get the configuration to show the featured_image as a thumbnail on my main page. I am following these instructions for the asset and content layout https://blowfish.page/docs/thumbnails/

so for example my conteent estructures goes like:

 --- 
title: "Psilocybe Cubensis"
date: 2025-09-17T07:28:57Z`
draft: false`
description: "Post de prueba, comprobando la funcionalidad"
tags: ["cultivo", "hongos", "psilocibina"]
categories: ["biologia"]
featured_image: "feautured.jpg"
 --- 

and my folder structures is like:

and here is all the files pushed to git for reference https://github.com/zareki/Blowfish_remlu

Any ideas of what i am doing wrong... one thing i can do is modify the paramas.toml line:

 `# defaultFeaturedImage = "IMAGE.jpg" # used as default for featured images in all articles`

However, doing so modifies all the thumbnails to one static image, and I want to have one individual futured image per post.

Thanks in advance to anyone that can give any recommendations.

[ZhenShuo2021]

Looks like a typo. It should be feature.jpg instead of feautured.jpg.

Set showHero to true in config/_default/params.toml to enable the hero display. showHero appears in four cases:

• article: pages generated from your markdown, e.g., https://blowfish.page/docs/welcome/
• list: pagination pages, e.g., https://blowfish.page/docs/
• taxonomy: pages for categories defined in [taxonomies] of hugo.toml, e.g., https://blowfish.page/tags/
• term: keys of taxonomies, e.g., https://blowfish.page/tags/docs/

In your frontmatter, the keys should be featureimage and featureimagecaption, not featured_image and featured_image_caption¹.

Some additional tweaks for your project:

• passthrough from markup.toml
• a .gitignore to avoid tracking generated files, e.g.:

public/
resources/
.hugo_build.lock

Remove them from git tracking with git rm -r --cached public resources for the gitignore to take effect.

Footnotes

1. Currently, the feature image filename match has higher priority than frontmatter, and this will be fixed in the next release (✨ Feat(article-link, hero): improve image handling #2451). Also, featureimagecaption only works when heroStyle is big. ↩

[zareki]

Ok, at least something happens with your recommendations.

---
title: "Psilocybe Cubensis"
date: 2025-09-17T07:28:57Z
draft: false
description: "Post de prueba, comprobando la funcionalidad"
tags: ["cultivo", "hongos", "psilocibina"]
categories: ["biologia"]
**_featureimage: "feauture.jpg"_**
feautureimagecaption: "test"

Made that change in front matter, and corrected typos of files.

However, when I try to render the site now I face several problems, :/ they all seem like render errors.

ERROR render of "/categories/biologia" failed: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/_default/term.html:54:15": execute of template failed: template: term.html:54:15: executing "main" at <partial "article-link/simple.html" .>: error calling partial: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/partials/article-link/simple.html:46:30": execute of template failed: template: _partials/article-link/simple.html:46:30: executing "_partials/article-link/simple.html" at <resources.GetRemote>: error calling GetRemote: unable to cast []string{"feauture.jpg"} of type []string to string
ERROR render of "/home/remusia/Documents/hugo/relu/content/posts/_index.md" failed: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/_default/list.html:77:17": execute of template failed: template: list.html:77:17: executing "main" at <partial "article-link/simple.html" .>: error calling partial: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/partials/article-link/simple.html:46:30": execute of template failed: template: _partials/article-link/simple.html:46:30: executing "_partials/article-link/simple.html" at <resources.GetRemote>: error calling GetRemote: unable to cast []string{"feauture.jpg"} of type []string to string
ERROR render of "/tags/cultivo" failed: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/_default/term.html:54:15": execute of template failed: template: term.html:54:15: executing "main" at <partial "article-link/simple.html" .>: error calling partial: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/partials/article-link/simple.html:46:30": execute of template failed: template: _partials/article-link/simple.html:46:30: executing "_partials/article-link/simple.html" at <resources.GetRemote>: error calling GetRemote: unable to cast []string{"feauture.jpg"} of type []string to string
ERROR render of "/tags/hongos" failed: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/_default/term.html:54:15": execute of template failed: template: term.html:54:15: executing "main" at <partial "article-link/simple.html" .>: error calling partial: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/partials/article-link/simple.html:46:30": execute of template failed: template: _partials/article-link/simple.html:46:30: executing "_partials/article-link/simple.html" at <resources.GetRemote>: error calling GetRemote: unable to cast []string{"feauture.jpg"} of type []string to string
Built in 56 ms
Error: error building site: render: failed to render pages: render of "/home/remusia/Documents/hugo/relu/content/posts/cubensis/index.md" failed: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/_default/single.html:12:11": execute of template failed: template: single.html:12:11: executing "main" at <partial "hero/basic.html" .>: error calling partial: "/home/remusia/Documents/hugo/relu/themes/blowfish/layouts/partials/hero/basic.html:10:26": execute of template failed: template: _partials/hero/basic.html:10:26: executing "_partials/hero/basic.html" at <resources.GetRemote>: error calling GetRemote: unable to cast []string{"feauture.jpg"} of type []string to string

Any follow-up when u have the time will be appreciated, if not I'll just revert and live with no thumbnails :d

[zareki]

And for the record... I can use external http file as feature image, and it works...

I tried this, however the featureimage with local asset is not working?

title: "Psilocybe Cubensis"
date: 2025-09-17T07:28:57Z
draft: false
description: "Post de prueba, comprobando la funcionalidad"
tags: ["cultivo", "hongos", "psilocibina"]
categories: ["biologia"]
featureimage : "https://remlu.cc/posts/cubensis/DSC_5276.jpg""
feautureimagecaption: "test"

EDIT: I'm working around the featureimage thingy by just linking the .jpg that is directly uploaded to the blog post.

[ZhenShuo2021]

Internal images for the frontmatter featureimage will be supported in the next release, fixed in #2451.