PNG Maker 对比 InstructPix2Pix

PNG Maker is an online tool that turns text prompts into PNG images with transparent backgrounds. It targets designers, marketers, and content creators who need clip-art style assets, logos, or graphics without opening desktop editing software.

You type a description of what you want, pick an aspect ratio, and the app generates one or more PNG files you can download. The web app also supports image-to-image generation, so you can upload a reference and refine the output from there. Free users get 9 credits per day; paid plans unlock higher monthly credit limits, batch generation, and private outputs.

The site also organizes outputs by tags and runs a blog with tips for writing better prompts. If you need quick transparent PNGs for slides, social posts, or web layouts, it keeps the workflow in the browser with no install required.

InstructPix2Pix 根据简单的语言指令编辑照片，例如“将天空变成日落橙色”或“把它变成水彩画”。您提供一张输入图片和一条简短的文本命令，模型即可在几秒钟内返回编辑后的版本，无需先对该特定照片进行训练。该模型由加州大学伯克利分校的研究人员发布，作为 CVPR 2023 的亮点。

基于蒙版的编辑器要求您先绘制区域再进行修改。InstructPix2Pix 仅通过文本进行一次前向传播，跳过了其他扩散编辑工作流中缓慢的每张图片微调或反演步骤。论文中失败的案例体现了这一权衡：视角变化、物体替换和紧密局部编辑仍是弱点。

该项目在 GitHub 上提供开源代码，并在 Hugging Face 提供浏览器中试用的演示空间。训练时结合了 GPT-3 和 Stable Diffusion 来合成指令对，发布的模型即使训练分辨率为 256x256，也能推广到宽度约 768 像素的真实照片。