Niumedia Tools
Useful tools for clearer visual AI work.
Practical tools for visual AI work. Start with a canvas, refine a prompt, or inspect an upstream open-source resource before you build.
Start here
One useful task per page.
We do not need your account, prompt history, or image upload to run the first tools.
Canvas helper
Image Size & Aspect Ratio Calculator
Calculate a clean aspect ratio, resize proportionally, and choose a canvas for your next image.
Open tool →Prompt studioAI Image Prompt Generator & Optimizer
Turn an idea into an editable, structured image prompt without sending your text to a server.
Open tool →Quality helperNegative Prompt Helper
Build an editable negative prompt for common image-quality and composition issues.
Open tool →Prompt patternsImage Prompt Library
Browse a small, editor-reviewed set of reusable prompt structures and make them your own.
Open tool →Reviewed resourcesOpen-source AI Skills: Curated Starting Points
A reviewed index of upstream projects for image, prompt, and agent workflows.
Open tool →