Design
图像渐变叠加
为图像添加可自定义颜色、方向和混合模式的渐变叠加效果
file· 文件结果打开工具
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/image-add-gradient' \
-H 'Content-Type: application/json' \
-d '{"filename":"imageFile.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/image-add-gradient' \
-F 'imageFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'gradientType=linear' \
-F 'startColor=#000000' \
-F 'endColor=#ffffff' \
-F 'direction=45' \
-F 'opacity=0.5' \
-F 'blendMode=over' \
-F 'outputFormat=png' \
-F 'quality=90'