Google Classroom is the most widely used learning management system in UK and US schools, and images are central to assignments, announcements, class banners, and materials. At imgresizr.com, you can resize any image for Google Classroom quickly and for free — no account needed, everything happens in your browser.
Google Classroom Image Sizes
| Element | Recommended Size |
|---|---|
| Class banner/header | 1600×400px (4:1 ratio) |
| Announcement image | 1200×628px |
| Assignment image | 1200×900px |
| Profile photo | 250×250px |
How to Resize Images for Google Classroom
Upload your image to imgresizr.com. For a class banner, use the Crop tool to set a 4:1 ratio (very wide, thin banner), then use the Resize tool to set 1600×400px. Google Classroom displays class banners at this ratio across both desktop and mobile views. For announcement or assignment images, use the Resize tool to set 1200×628px — this creates a clean, professional look in the Classroom stream. For profile photos, resize to 250×250px or larger — Google will handle the circular cropping automatically. Compress all images to under 1MB for fast loading, particularly important for students on limited data connections.
Google Classroom Image Best Practices
- Class banners should reflect the subject — a science class might use a relevant experiment or equipment photo
- Avoid putting critical text in class banners — they crop differently on different devices
- Keep assignment images clean and focused on a single subject
- Compress images before uploading — slow loading interrupts student workflow
Resize images for Google Classroom at the perfect dimensions, free at imgresizr.com.