Development
响应式 Picture / srcset 艺术方向构建器
生成完整的 <picture> 艺术方向标记：按断点的 <source media>、1x/2x 密度候选或 {w} 模板宽度描述符、可选 AVIF/WebP 格式层、sizes 处理、防 CLS 的 width/height，同时输出 HTML 与 JSX 两种方言并附基于规范的 lint 提示。
html· HTML 结果打开工具
快速开始
用三种语言从你的代码中调用此工具。
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/responsive-picture-srcset-art-direction-builder' \
-H 'Content-Type: application/json' \
-d '{"filename":"variantImages.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/zh/api/tools/responsive-picture-srcset-art-direction-builder' \
-F 'sources=768 /img/hero-mid.jpg
1280 /img/hero-wide.jpg' \
-F 'variantImages=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'descriptorMode=density' \
-F 'densities=1x,2x' \
-F 'sizesAttr=(min-width: 1024px) 960px, 100vw' \
-F 'fallbackUrl=/img/hero-mobile.jpg' \
-F 'altText=Fresh sourdough loaves on a marble counter' \
-F 'formatLayer=none' \
-F 'flavor=html' \
-F 'lazyAttrs=true'