Instagram Photo Resizer
Resize and combine multiple photos to match Instagram post aspect ratios (1:1, 4:5, 1.91:1) with zoom, custom background, and drop shadow.
Instagram Photo Resizer
Resize and combine multiple photos to match Instagram post aspect ratios (1:1, 4:5, 1.91:1) with zoom, custom background, and drop shadow.
About the Instagram photo resizer
1080 px layouts with editable layers
The tool builds a local canvas for Instagram post ratios: 1:1 square, 4:5 portrait, and 1.91:1 landscape. Each uploaded JPG or PNG becomes a layer that can be selected, dragged, zoomed, reordered, or arranged with horizontal, vertical, grid, and stack presets.
Local export for posting elsewhere
Preview, dominant background color, shadow, and copy or download actions all run with browser canvas APIs. Download creates a JPEG at the selected Instagram ratio, while copy writes a PNG image to the clipboard when the browser supports it; the tool does not log in to Instagram, upload photos, or preserve original image metadata.
FAQ
Common questions and answers about this topic.
What are the recommended image sizes for Instagram posts?
Instagram supports three post aspect ratios: square (1:1) at 1080×1080 pixels, portrait (4:5) at 1080×1350 pixels, and landscape (1.91:1) at 1080×566 pixels. The recommended width is 1080 pixels for best quality. Images below 320 px wide may be stretched, and images above 1080 px will be downscaled automatically.
How do I zoom, reposition, or add a shadow to my photo?
Use the zoom slider or scroll on the preview to scale the image. Drag the preview to reposition. Toggle the drop shadow checkbox to add a shadow behind the image, then adjust blur, opacity, and offset. The background color is auto-detected from your image and can be changed with the color picker.
Are my photos uploaded to a server?
No. All image processing runs entirely in your browser using the HTML5 Canvas API. Your photos never leave your device, ensuring complete privacy.
Why is 4:5 portrait the recommended ratio for Instagram?
The 4:5 portrait ratio takes up the most screen space in the Instagram feed, making your post more visible and engaging compared to square or landscape photos. It is especially effective on mobile devices where vertical content dominates the viewport.
What image formats are supported?
You can upload JPG/JPEG and PNG images. The output is always a JPG file at 1080 px wide, which is the recommended format and resolution for Instagram posts.