diff --git a/README.md b/README.md
index 2f1ebde6b..173edc76b 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,8 @@ As an example: A file that resides in `static/img/2025/test-image.jpg` should be
 
 It is also good practice to name media files with the date you add them/the date of the page/post you want to add them to, e.g. `static/img/2025/2025-03-04-blogpost-image.jpg` (using `yyyy-mm-dd` as the start of the filename).
 
+Aim to keep within 1024 pixels high/wide to keep the file sizes reasonable for our pages to load quicky.
+
 #### Some other random tips
 
 - Where is the menu?? It's in hugo.yaml.
diff --git a/content/posts/YYYY-MM-DD-event-fellowship-blog-template.md b/content/posts/YYYY-MM-DD-event-fellowship-blog-template.md
index 65eda79b6..a1b77e5d6 100644
--- a/content/posts/YYYY-MM-DD-event-fellowship-blog-template.md
+++ b/content/posts/YYYY-MM-DD-event-fellowship-blog-template.md
@@ -61,9 +61,11 @@ In your forked repository:
 
 ### 4. Upload Your Images
 
-1. Navigate to the folder: `static/img/YYYY/` for the current year
-2. Click **"Add file" → "Upload files"**
-3. Upload your image(s) here using the format YYYY-MM-DD-image-name.jpg
+1. Resize your images if needed to at most 1024 pixels high/wide
+   (to keep the download size reasonable so the page loads quicky).
+2. Navigate to the folder: `static/img/YYYY/` for the current year
+3. Click **"Add file" → "Upload files"**
+4. Upload your image(s) here using the format YYYY-MM-DD-image-name.jpg
 
 To insert images in your blog post, use the following format (without the static prefix):