Instagram Photo Cropper & Resizer
Format your photos for Instagram without unwanted auto-cropping. Choose between Square (1:1), Portrait (4:5), Landscape (1.91:1), or Story (9:16).
- Processed client-side in your browser — files never leave your device.
- Free, with no signup, account, or usage limits.
- Works on any modern browser, including mobile.
About this tool
Crop Image: Crop images to specific dimensions or ratios. Processing runs locally in your browser — your input is not uploaded to ThothBox.
How to use
- Open Crop Image and add your file (upload or drag and drop).
- Set the options that match your goal.
- Run the action — processing happens in your browser.
- Download or copy the result when it is ready.
FAQ
What is the best aspect ratio for Instagram feed posts?
The 4:5 portrait ratio (1080x1350 px) occupies the maximum vertical screen space in mobile feeds.