Simple CLI tool to convert PDFs to dark mode, with TOC preservation

  • Hacker News

Hi HN, I made a little something that could be useful to those like me that read pdfs at night.

  • Published: Apr 20, 2026
  • First seen: Apr 20, 2026

AI Summary

Hi HN, I made a little something that could be useful to those like me that read pdfs at night.

Best for

Teams evaluating AI product workflows / Builders comparing emerging tools / Operators tracking early category shifts

Why it matters

Primary discovery source is Hacker News.

Key Features

  • Primary public product URL is https://github.com/rngil/dark-pdf.
  • Description: Hi HN, I made a little something that could be useful to those like me that read pdfs at night..
  • GitHub repository is linked as rngil/dark-pdf.
  • Listed on Hacker News as "Simple CLI tool to convert PDFs to dark mode, with TOC preservation".
  • Source description: Hi HN, I made a little something that could be useful to those like me that read pdfs at night..

Use Cases

  • Primary discovery source is Hacker News.
  • A public GitHub repo is available for direct technical review.
  • Hacker News mention is recent (2026-04-20).
  • Primary public product URL is https://github.com/rngil/dark-pdf.
  • Description: Hi HN, I made a little something that could be useful to those like me that read pdfs at night..

Why Now

Simple CLI tool to convert PDFs to dark mode, with TOC preservation is appearing on fresh discovery surfaces, so it is worth reviewing while momentum is still forming. Confidence is currently medium (49/100), so treat this as an early signal rather than a settled trend.

Community Signals

Trend score

47.2

24h momentum

Rising

Hacker News points

3

Rising

Facts / Signals / Inference / Unknowns

Facts

  • Listed on Hacker News as "Simple CLI tool to convert PDFs to dark mode, with TOC preservation".
  • Source description: Hi HN, I made a little something that could be useful to those like me that read pdfs at night..
  • Source publish date is 2026-04-20.
  • Description: Hi HN, I made a little something that could be useful to those like me that read pdfs at night..
  • GitHub repository is linked as rngil/dark-pdf.
  • Primary public product URL is https://github.com/rngil/dark-pdf.

Signals

  • Hacker News mention is recent (2026-04-20).
  • A public GitHub repo is available for direct technical review.
  • Primary discovery source is Hacker News.

Inference

  • Public code access can lower evaluation friction for developer audiences.

Unknowns

  • Documentation is not explicitly linked in the current allowed evidence set.
  • No tagline is stored on the current product record.
  • Pricing details are not explicitly linked in the current allowed evidence set.
  • Recent changelog or release history is not explicitly linked in the current allowed evidence set.
  • Release cadence cannot be confirmed unless a changelog or release link is explicitly provided.

Evidence Snapshots

Simple CLI tool to convert PDFs to dark mode, with TOC preservation

Listed on Hacker News as "Simple CLI tool to convert PDFs to dark mode, with TOC preservation".

Simple CLI tool to convert PDFs to dark mode, with TOC preservation GitHub repository

GitHub repository is linked as rngil/dark-pdf.

Simple CLI tool to convert PDFs to dark mode, with TOC preservation official profile

Primary public product URL is https://github.com/rngil/dark-pdf.

Alternatives / Related

Original Sources