dark-pdf

Convert PDFs to dark mode, with table of contents preservation.

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Install

npm install -g dark-pdf

Usage

darkpdf [options] <input.pdf>

Options

Flag	Default	Description
-o, --output <path>	<input>_<theme>_dark.pdf	Output file path
-t, --theme <name>	claude	Theme to apply
-s, --scale <number>	3	Render quality multiplier
-h, --help	N/A	Show help

Themes

Name	Color
classic	Pure black
claude	Claude Warm
chatgpt	ChatGPT Cool
sepia	Sepia Dark
midnight	Midnight Blue
forest	Forest Green

Programmatic API

import { convert, THEMES } from "dark-pdf";

const outPath = await convert("/path/to/input.pdf", {
  theme: "claude",
  output: "/path/to/output.pdf",
  scale: 3,
  onProgress: ({ page, total }) => console.log(`${page}/${total}`),
});

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Logo from icon-icons.com.