Smaller comments QR size by using png instead of gif

CHANGELOG.md

@@ -39,6 +39,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Show theme switcher if `config.extra.default_theme` is set, even if `config.extra.nav.show_theme_switcher` is not.
 - Tweak padding of verified instance badge.
 - Use more fitting cursors in some contexts.
+- Use PNG instead of GIF for comments QR code to reduce download size.
 - Use relative colors for `-bg` color variants.
 
 ### Removed

templates/partials/comments.html

@@ -20,7 +20,7 @@
 
 <section id="comments">
 	{%- if config.extra.comments.show_qr -%}
-		<img id="qrcode" class="no-hover pixels" title="{{ macros_translate::translate(key='comments_qr', default='QR code to a Mastodon post', language_strings=language_strings) }}" {%- if config.markdown.lazy_async_image -%}decoding="async" loading="lazy"{%- endif -%} src="https://api.qrserver.com/v1/create-qr-code/?data=https://{{ host }}/@{{ username }}/{{ id }}&format=gif" />
+		<img id="qrcode" class="no-hover pixels" title="{{ macros_translate::translate(key='comments_qr', default='QR code to a Mastodon post', language_strings=language_strings) }}" {%- if config.markdown.lazy_async_image -%}decoding="async" loading="lazy"{%- endif -%} src="https://api.qrserver.com/v1/create-qr-code/?data=https://{{ host }}/@{{ username }}/{{ id }}" />
 	{%- endif -%}
 	<h2>{{ macros_translate::translate(key="comments", default="Comments", language_strings=language_strings) }}</h2>
 	<p>{{ macros_translate::translate(key="comments_description", default="You can comment on this blog post by publicly replying to this post using a Mastodon or other ActivityPub/Fediverse account. Known non-private replies are displayed below.", language_strings=language_strings) }}</p>