onepage-pdf
GitHub将HTML转换为单页连续长PDF，保留桌面布局、背景及可选文本。通过Headless Chrome渲染并自动裁剪内容高度，支持处理响应式断点、玻璃拟态等样式问题，并提供字符串替换与敏感词禁止功能。
Trigger Scenarios
Install
npx skills add NeverSight/learn-skills.dev --skill onepage-pdf -g -y
SKILL.md
Frontmatter
{
"name": "onepage-pdf",
"license": "MIT",
"metadata": {
"author": "xntj-ai",
"source": "https:\/\/github.com\/xntj-ai\/onepage-pdf",
"version": "1.0"
},
"description": "Convert an HTML page into a single continuous-page PDF (one tall page, no pagination breaks), preserving desktop layout, backgrounds and selectable text. Use when the user asks to turn an HTML file\/report\/proposal into a \"single-page PDF\", \"long PDF\", \"不分页 PDF\", \"单页 PDF\", \"长图式 PDF\", or complains that an HTML-to-PDF export breaks into pages or cuts content. Supports optional string redaction with leak verification.",
"compatibility": "No API token required. Requires Python 3.10+ with `pymupdf` (`pip install pymupdf`) and a local Chrome or Edge browser. Runs fully offline against local HTML — does not call api.acedata.cloud."
}
onepage-pdf
Vendored from github.com/xntj-ai/onepage-pdf by 张拼拼 · XNTJ, under the MIT License. See LICENSE.
Render HTML to one tall PDF page via headless Chrome, then crop the page to the real content height with PyMuPDF. Height is never predicted (print layout is not screen layout); it is measured after rendering, which is exact.
Requires: Python with pymupdf, plus a local Chrome or Edge. No API token.
Workflow
1. Inspect the source HTML first
Read the HTML and check four things; they decide whether --extra-css is needed:
- Responsive breakpoints. Print media queries evaluate against the default
paper width (~741px), NOT the
@pagesize. Any@media (max-width: N)with N ≥ 741 will fire during print and collapse the desktop layout. For each such rule, write an override locking the desktop value with!important(e.g..grid{grid-template-columns:repeat(3,1fr)!important}). - Glassmorphism.
backdrop-filterblur is silently dropped in PDF output. If glass elements sit on busy backgrounds, add a print fallback:.glass{backdrop-filter:none!important;background:rgba(255,255,255,.88)!important}. - Scroll-reveal animations. Common class patterns (
fade*,reveal*,animate*,aos) are forced visible automatically. Anything else that starts atopacity:0needs an explicitopacity:1!importantoverride. - vh/vw sizing. Viewport units resolve against the page area in print and
drift ~1%; a
min-height:100vhhero becomes ~187in tall on the bedrock page. Override such rules with fixed px values.
Put all overrides in one CSS file and pass it via --extra-css.
2. Convert
Paths below are relative to this skill directory.
python scripts/onepage_pdf.py input.html -o output.pdf --width 1280 \
[--extra-css fixes.css] [--replace subs.json --forbid words.txt]
--width: match the design width of the page (snapped to 8px; non-8px page sizes hit MediaBox rounding bugs that spawn phantom pages).--replace: JSON[["old","new"], ...], applied in order — put longer / more specific strings first. Use for redaction before publishing.--forbid: one word per line; the script aborts if any survives in the HTML or in the final PDF text layer. Always pair with--replace.--crop pixel: switch to raster row-scanning if the vector crop misjudges (e.g. a decorative element painted taller than the real content).
The script self-handles: oversized-bedrock rendering with auto-retry on overflow, content cropping (MediaBox + CropBox rewritten identically for viewer compatibility), CJK-safe output paths, single-page assertion.
A bundled example lives in examples/ — try it end to end:
python scripts/onepage_pdf.py examples/demo.html -o /tmp/demo.pdf \
--width 1280 --extra-css examples/demo-fixes.css
3. Verify
The script prints OK 1 page, WxHpt. Then:
- Render a thumbnail and eyeball it (layout intact, no collapsed grids,
backgrounds present, nothing cut at the bottom):
import pymupdf doc = pymupdf.open("output.pdf") doc[0].get_pixmap(dpi=40).save("check.png") - If redaction was used, the forbid check already ran against the PDF text; still spot-check the rendered image for sensitive content in raster form.
- Heed the script warnings: heights above 14400pt break Acrobat (Chrome, Firefox and WeChat preview are fine); "content nearly fills the bedrock" means inspect the tail for truncation.
Troubleshooting and mechanics
Read references/mechanics.md when output looks wrong (collapsed layout, missing backgrounds, blank page, phantom second page, blurry or missing CJK glyphs) — it documents the Chrome print-rendering rules this tool is built around, plus the CDP-based alternative route.
Version History
- e0220ca Current 2026-07-05 22:55
