Image Paginator（律师证据长截图转PDF）

将长截图/长图智能分页为规范 PDF，支持网格切片、页码标注、微信证据排版

📌 快速上手（律师场景示例）

场景：微信聊天截图 → 提交法院的证据 PDF

# 1. 律师导出微信聊天记录为长截图
# 2. 一键转换：
python scripts/slice_n_pdf.py "/Users/律师/Desktop/聊天记录.jpg" \
  -d "/Users/律师/Desktop" -o "聊天证据_20250105.pdf" --clean

# 3. 直接提交 PDF，打印存档，或发邮件
open "/Users/律师/Desktop/聊天证据_20250105.pdf"

⚖️ 律师场景专区

适用场景

输入规范建议

• 分辨率：推荐 1080px 宽，最佳清晰度
• 格式：PNG / JPG 均可，建议 PNG 保留更多细节
• 多张截图：按时间顺序传入，自动按顺序拼接
• 不要裁剪：保持原始宽高比，工具会自动适配

输出规范

• 纸张尺寸：A4（595 × 842 pt）
• 网格布局：默认 2 列 × 2 行，每页 4 格
• 页码：底部居中，格式 - N -
• 切片编号：每个格子左上角标注，格式如 1-1、2-3
• 间距：格子间默认留 40px 灰色间隙，便于翻页区分
• 尾部合并：最后一页不足一格时，自动合并到前一页，避免孤零零一行

法院提交注意事项

1. 截图完整性：确保聊天记录从头到尾完整，不要断章取义
2. 时间戳：PDF 页码和序号可以快速定位原文位置
3. 尺寸：导出前确认截图宽度统一（建议 1080px），避免 PDF 页面大小不一
4. 合并打印：如有多个案件，可先生成多个 PDF，再合并为一个文件

📊 效果示意图

场景总览

律师场景：输入 → 输出

💡 示意图仅供参考，实际效果取决于截图分辨率和参数设置。

Prerequisites

Required python packages: Pillow, fpdf2.

How to use this skill

Execute the python script scripts/slice_n_pdf.py via the command line.

Command Syntax

python scripts/slice_n_pdf.py \x3Csource1> [source2 ...] -d \x3Coutput_dir> [OPTIONS]

Required Arguments

• sources (positional): Path(s) to source image(s). Multiple images will be auto-resized to the same width and concatenated in order.
• -d / --dest: Directory to save the output PDF.

Optional Arguments

• -o / --output: Name of the output PDF file (default: output.pdf).
• --tile: Height of each tile in pixels (default: 2000).
• --bleed: Bleed / overlap in pixels (default: 200).
• --cols: Grid columns (default: 2).
• --rows: Grid rows (default: 2).
• --gutter: Gap between cells in pixels (default: 40).
• --edge: Page margin in pixels (default: 25).
• --no-numbers: Omit page numbers at the bottom.
• --clean: Remove intermediate tile images after build.

Key Features (v2.1)

1. Multiple source images: Pass multiple paths; images auto-resize to uniform width and concatenate vertically.
2. Sequence numbers: Each tile has a numbered badge (1, 2, 3…) on the top-left corner.
3. Gaps between tiles: Configurable gutter with light gray cell backgrounds for readability.
4. Consistent page sizes: All PDF pages share the same dimensions.
5. Page numbers: Each page has a centered - N - footer (disable with --no-numbers).
6. Adaptive tail merging: Short tail segments merge into the previous tile to avoid tiny orphans.
7. Parameter validation: Auto-checks tile > bleed, cols/rows range (1-10), file existence, etc.

⚠️ Important Instructions for the Agent (Guardrails)

1. Always use --clean by default unless the user specifically asks to keep tiles.
2. Absolute Paths: Resolve ~ and relative paths to absolute paths before running.
3. Multiple images: When the user provides multiple images, pass all as positional arguments.
4. DO NOT try to read the output PDF: The result is binary. Just check STDOUT — if it says ✓ Done, tell the user the file path.
5. Always open the PDF for the user after generation using open \x3Cpath> (macOS).

Examples

Single long image:

python scripts/slice_n_pdf.py "/Users/bob/Downloads/long_chat.png" \
  -d "/Users/bob/Desktop" -o "chat.pdf" --clean

Multiple images with custom grid:

python scripts/slice_n_pdf.py "/Users/bob/Desktop/1.jpg" "/Users/bob/Desktop/2.jpg" \
  -d "/Users/bob/Desktop" -o "combined.pdf" \
  --cols 2 --rows 2 --gutter 40 --clean

Single column, larger tiles:

python scripts/slice_n_pdf.py "/abs/path/webpage.jpg" \
  -d "./results" --cols 1 --rows 3 --tile 3000 --gutter 20 --clean

参数速查表

⚠️ 参数校验：脚本会自动检查 tile > bleed、cols/rows 在合理范围内、文件存在等，发现问题直接报错退出。

一键安装脚本

# 方法一：克隆后安装
git clone https://github.com/wux818738-alt/openclaw-skill-image-paginator.git
cd openclaw-skill-image-paginator
bash install.sh

# 方法二：直接下载
curl -fsSL https://github.com/wux818738-alt/openclaw-skill-image-paginator/archive/refs/heads/main.zip -o /tmp/skill.zip
unzip /tmp/skill.zip -d ~/.qclaw/skills/
pip3 install fpdf2 Pillow

安装后直接运行（不需要指定完整路径）：

python ~/.qclaw/skills/image-paginator/scripts/slice_n_pdf.py \x3C图片> -d \x3C输出目录>