Add documentation for FORCE_WEBP

README.md

@@ -23,6 +23,7 @@ It's read-only and works without JavaScript. Images and albums can be viewed wit
 - Albums
 - User page
 - Tag page
+- Bandwidth efficient - automatically use WebP with the `FORCE_WEBP` environment variable
 
 Some things left to implement (contributions welcome!):
 

pages/frontpage.go

@@ -1,6 +1,8 @@
 package pages
 
 import (
+	"os"
+
 	"codeberg.org/video-prize-ranch/rimgo/utils"
 	"github.com/gofiber/fiber/v2"
 )
@@ -13,5 +15,6 @@ func HandleFrontpage(c *fiber.Ctx) error {
 	return c.Render("frontpage", fiber.Map{
 		"proto": c.Protocol(),
 		"domain": c.Hostname(),
+		"force_webp": os.Getenv("FORCE_WEBP"),
 	})
 }

views/frontpage.hbs

@@ -43,6 +43,10 @@
 
     <p>Just replace imgur.com or i.imgur.com with <code>{{domain}}</code>! You can setup automatic redirects using <a
         href="https://github.com/libredirect/libredirect">LibRedirect</a> (recommended) or <a href="https://github.com/einaregilsson/Redirector">Redirector</a>.</p>
+    <br>
+    {{#if force_webp}}
+    <p>To download images as their original filetype, add <code>?no_webp=1</code> to the end of the image URL.</p>
+    {{/if}}
 
     <br>
     <details>