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lovstudio-png2svg

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UpdatedMay 30, 2026 at 20:31

Convert PNG images to high-quality SVG with optional white-background removal, vtracer spline vectorization, and svgo compression. Use when the user asks for "PNG to SVG", "png2svg", "转 SVG", "矢量化", "去白底", logo tracing, or converting raster icons into editable vector assets.

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Graphic DesignersArts, Design, Entertainment, Sports, and Media Occupations·SOC 27-1024

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SKILL.md

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name	lovstudio-png2svg
category	Document Conversion
tagline	PNG → high-quality SVG conversion with background removal and spline curves.
description	Convert PNG images to high-quality SVG with optional white-background removal, vtracer spline vectorization, and svgo compression. Use when the user asks for "PNG to SVG", "png2svg", "转 SVG", "矢量化", "去白底", logo tracing, or converting raster icons into editable vector assets.
license	MIT
compatibility	Requires ImageMagick `magick`, vtracer, and svgo (`npx svgo` is supported). Works on macOS/Linux where those CLIs are installed.
metadata	{"author":"lovstudio","version":"1.0.1","tags":"png svg vectorization imagemagick vtracer"}

PNG to SVG Skill

将 PNG 图片转换为高质量矢量 SVG，支持去除白色背景。

工具链

PNG → magick (去白底+alpha阈值) → vtracer (样条曲线) → svgo (压缩) → SVG

ImageMagick (magick): 去除白色背景 + alpha 阈值处理
vtracer: 样条曲线矢量化（比 potrace 更平滑）
svgo: SVG 路径压缩优化

调用方式

当需要将 PNG 转换为 SVG 时，按以下步骤执行：

输入

INPUT_PNG: 输入 PNG 文件路径（必需）
OUTPUT_SVG: 输出 SVG 路径（默认：同名 .svg）
KEEP_BG: 是否保留背景（默认：false，去除白色背景）

执行步骤

Step 1: 预处理（去白底）

如果需要去除背景（KEEP_BG=false）：

magick INPUT_PNG \
  -fuzz 15% -transparent white \
  -channel A -threshold 50% +channel \
  INPUT_PNG.temp.png

Step 2: 矢量化

vtracer --input INPUT_PNG.temp.png --output OUTPUT_SVG \
  --mode spline \
  --filter_speckle 8 \
  --color_precision 8 \
  --corner_threshold 120 \
  --segment_length 6 \
  --path_precision 5

Step 3: 压缩优化

npx svgo OUTPUT_SVG -o OUTPUT_SVG --multipass

Step 4: 清理

rm -f INPUT_PNG.temp.png

输出

返回生成的 SVG 文件路径，并报告文件大小。

✓ PNG → SVG 转换完成

输入: {INPUT_PNG}
输出: {OUTPUT_SVG}
大小: {file_size}

依赖

首次使用前确保已安装：

brew install imagemagick
cargo install vtracer
npm install -g svgo  # 或使用 npx

参数调优

参数	作用	调大效果
`filter_speckle`	过滤小斑点	更干净
`corner_threshold`	角点阈值	更平滑
`segment_length`	线段长度	更平滑
`color_precision`	颜色精度	更准确

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name	lovstudio-png2svg
category	Document Conversion
tagline	PNG → high-quality SVG conversion with background removal and spline curves.
description	Convert PNG images to high-quality SVG with optional white-background removal, vtracer spline vectorization, and svgo compression. Use when the user asks for "PNG to SVG", "png2svg", "转 SVG", "矢量化", "去白底", logo tracing, or converting raster icons into editable vector assets.
license	MIT
compatibility	Requires ImageMagick `magick`, vtracer, and svgo (`npx svgo` is supported). Works on macOS/Linux where those CLIs are installed.
metadata	{"author":"lovstudio","version":"1.0.1","tags":"png svg vectorization imagemagick vtracer"}

PNG to SVG Skill

将 PNG 图片转换为高质量矢量 SVG，支持去除白色背景。

工具链

PNG → magick (去白底+alpha阈值) → vtracer (样条曲线) → svgo (压缩) → SVG

ImageMagick (magick): 去除白色背景 + alpha 阈值处理
vtracer: 样条曲线矢量化（比 potrace 更平滑）
svgo: SVG 路径压缩优化

调用方式

当需要将 PNG 转换为 SVG 时，按以下步骤执行：

输入

INPUT_PNG: 输入 PNG 文件路径（必需）
OUTPUT_SVG: 输出 SVG 路径（默认：同名 .svg）
KEEP_BG: 是否保留背景（默认：false，去除白色背景）

执行步骤

Step 1: 预处理（去白底）

如果需要去除背景（KEEP_BG=false）：

magick INPUT_PNG \
  -fuzz 15% -transparent white \
  -channel A -threshold 50% +channel \
  INPUT_PNG.temp.png

Step 2: 矢量化

vtracer --input INPUT_PNG.temp.png --output OUTPUT_SVG \
  --mode spline \
  --filter_speckle 8 \
  --color_precision 8 \
  --corner_threshold 120 \
  --segment_length 6 \
  --path_precision 5

Step 3: 压缩优化

npx svgo OUTPUT_SVG -o OUTPUT_SVG --multipass

Step 4: 清理

rm -f INPUT_PNG.temp.png

输出

返回生成的 SVG 文件路径，并报告文件大小。

✓ PNG → SVG 转换完成

输入: {INPUT_PNG}
输出: {OUTPUT_SVG}
大小: {file_size}

依赖

首次使用前确保已安装：

brew install imagemagick
cargo install vtracer
npm install -g svgo  # 或使用 npx

参数调优

参数	作用	调大效果
`filter_speckle`	过滤小斑点	更干净
`corner_threshold`	角点阈值	更平滑
`segment_length`	线段长度	更平滑
`color_precision`	颜色精度	更准确