Last Updated: Feb 16, 2026
Answer
Short answer:
The Generate button is typically disabled because a required input is missing, such as a text prompt or a base image. It may also remain inactive if your account has run out of credits or if an uploaded file exceeds the 16MB size limit.
Overview
In Rendair AI, the interface is designed to prevent accidental credit consumption. The system validates your inputs before allowing a generation to proceed. If the Generate button is greyed out or unclickable, it indicates that the tool does not yet have the necessary information to create a visual. This safeguard ensures that you do not waste resources on empty or invalid requests.
Common reasons and solutions
If you cannot click the Generate button, check the following factors to resolve the issue.
Missing text prompt
Most tools require a description of what you want to see. Ensure you have typed a prompt into the text field. The system handles prompts in any language, so you can write in your native tongue.
Missing base image
For workflows like Sketch-to-Render or Image-to-Video, a source file is mandatory. If you have not uploaded an image, the system cannot proceed.
File size limits
Rendair AI supports image uploads up to 16MB. If your file is larger than this, the upload may fail silently or prevent the button from activating. Compressing the image or resizing it usually fixes this.
Unsupported file formats
While the platform supports many formats, uploading an unsupported file type will prevent generation. Ensure your file is one of the standard supported types.
Insufficient credits
If you have used your 20 free trial credits or your subscription credits are depleted, the system will not allow further generations. You can check your credit balance in your account settings. The free credits are only available within the Chat tool.
Connection issues
Rendair AI is a fully web-based platform and requires an active internet connection. It does not support offline usage. If your connection drops, the interface may become unresponsive.
Inputs and file requirements
To ensure the Generate button becomes active, verify that your files meet these specifications.
Supported input formats
JPEG, JPG, PNG
WEBP
TIFF
HEIC, AVIF
Single-page PDF (converting to JPG is recommended if issues persist)
File constraints
Maximum size: 16MB per file.
3D files: While some tools support OBJ or FBX, standard rendering workflows rely on 2D screenshots of your 3D model.
Limitations or notes
Browser cache
Rarely, a browser issue may cause the interface to freeze. Refreshing the page or clearing your cache often resolves UI glitches.
Subscription status
Credits do not expire while you have an active subscription, but if a payment fails or the plan is canceled, your ability to generate may be paused.
Do you have another question?
Search Our Knowledge Base…
Still Need Help?
Explore the platform's capabilities through a personalized demonstration or try it for free.
Contact support: support@rendair.ai
Documentation: Rendair Guides
Book A Demo: Book A Demo Session
