ConvertDuck

Frame Your Photos Exactly How You Want

Whether you need a square avatar for LinkedIn or a 16:9 thumbnail for YouTube, unwanted edges can ruin a composition. This tool lets you crop images directly in your browser using the HTML5 Canvas API. Because there are no server uploads, your high-resolution photos stay private and processing is instant, saving you time on repetitive editing tasks.

How to Crop in 3 Simple Steps

1. Upload Image

Drag and drop your photo. We support high-resolution PNG and JPG files.

Pro Tip: Use the highest resolution source possible for crisp cuts.

2. Adjust Selection

Drag the handles to resize the crop area. Use the 'Lock Ratio' button for perfect squares or fixed dimensions.

3. Input Coordinates (Optional)

Need exact pixels? Type the width and height numbers directly into the input fields for surgical precision.

Designed for Creators

  • ✓ Lock Aspect Ratio

    Maintain consistent shapes (like 1:1 or 4:3) automatically while resizing the selection box.

  • ✓ Privacy First

    Your photos never leave your device. All cropping happens locally, ensuring sensitive documents remain secure.

  • ✓ No Quality Loss

    We extract the exact pixels you select without re-compressing the rest of the image unnecessarily.

Tech Specs

Supported Formats JPG, PNG, WebP
Precision Single pixel accuracy (X, Y inputs)
Processing Client-side Canvas API
Max Resolution Dependent on device RAM (tested up to 8K)

Browser vs. Cloud Cropping

Feature Local Browser Crop Server-Side Tools
Privacy 100% Private Uploaded to cloud
Speed Instant (Zero Latency) Slower (Upload time)
Large Files Supports High-Res Often capped at 5-10MB

Common Questions

Q. Does cropping reduce image quality? ▼
No, cropping simply removes pixels from the edges. The remaining pixels stay identical to the original.
Q. How do I make a perfect square for Instagram? ▼
Click the 'Lock Chain' icon. This forces the width and height to move together, keeping a perfect 1:1 ratio.
Q. Can I crop specific pixel dimensions? ▼
Yes, use the input fields below the image to type in exact values like '1200' for width and '630' for height.
Q. Is it safe for ID photos? ▼
Absolutely. Since the image is processed on your computer and not sent to a server, it's safe for personal data.