FASHN Resolution Upgrade: Larger Outputs, Flexible Aspect Ratios, Same Speed

What's New

Since the launch of FASHN v1.5, our primary focus has been delivering realistic, seamless virtual try-ons with optimal speed and usability. Today, we're extending that commitment further.

Until now, FASHN outputs were generated at a fixed resolution of 576×864 pixels, constrained to a strict 2:3 aspect ratio for optimal results. With this upgrade, the limitations around aspect ratios and image dimensions are dramatically reduced. You can now confidently submit images of various sizes and aspect ratios, knowing that FASHN will automatically adapt to deliver larger, high-resolution outputs without compromising the exceptional realism and quality you've come to expect.

No new parameters, no adjustments required—simply more freedom and better results.

Hoodie Try-On Example. High-resolution input with a narrow 9:16 aspect ratio (Portrait). Output generated at 642×1177 (previously 484×864).

Smarter Focus

We've enhanced how FASHN intelligently focuses on key areas (the person and the garment) in every image. Behind the scenes, the model continues to operate at its optimal working resolution of 576×864 pixels, but it now smartly concentrates its effort on precisely the area that matters most. This ensures you get larger outputs and more flexible aspect ratios effortlessly.

The key advantages include:

• Larger output resolutions without performance trade-offs

• Freedom from strict 2:3 aspect ratio constraints

• No impact on processing speed or runtime

Hoodie Try-On Example. High-resolution input with a wide 16:9 aspect ratio (Landscape). Output generated at 1408×768 (previously 576×324).

Fully Backward Compatible

This resolution upgrade seamlessly integrates into your existing workflows. There's no need for you to adjust your current integration or worry about compatibility. Everything will continue working exactly as before, now simply with improved flexibility and larger image outputs.

Dress Try-On Example. High-resolution input with a 1:1 aspect ratio (Square). Output generated at 720×720 (previously 576×576).

Early Access and Official Launch Date

Initially, this new resolution feature will be available via the /nightly endpoint for API users and marked as 🧪Experimental in the web app. While we're confident this upgrade only has benefits, we’re taking a cautious approach by allowing users a brief testing period.

We encourage you to test your integrations and workflows through these nightly and experimental channels. Assuming no issues arise, we plan to fully launch this upgrade to all users on Wednesday, April 30, 2025.

What's Next

We're continuously advancing FASHN’s capabilities to deliver unmatched virtual try-on experiences. This upgrade marks just the beginning of several planned enhancements aimed at making our technology even more versatile and powerful for your e-commerce and creative needs.

Thank you for your continued trust in FASHN. We’re excited to see the remarkable experiences you'll create with these enhanced capabilities.

Stay tuned for more exciting updates!