4:5 portrait cover resizing
This tool automatically applies a center-weighted cover crop to fit your photos into a 1080×1350 pixel canvas. This 4:5 aspect ratio is the standard format for maximizing vertical screen space on Instagram portrait posts.
When you drop a file into the tool, it proportionally scales the image to fill the entire 1080×1350 frame. Any overflowing pixels on the sides or top are cropped, ensuring the final output never appears stretched or distorted.
Batch canvas resizing
You can resize multiple images to the 1080×1350 dimension at the same time. The local worker pool processes each canvas resize image operation directly on your device, preventing slow network uploads.
Drop a mix of JPEG, PNG, or WebP files into the queue. Once the batch finishes, you can check the individual 1080×1350 outputs or download the entire set as a single ZIP archive.
Local device processing
All pixel calculations and canvas rendering happen entirely within your browser. Your images are never uploaded to a remote server for processing.
Because the tool relies on your local device to resize image canvas files, starting with high-resolution source images will yield the sharpest 1080×1350 results without using bandwidth.