"Because your retinas deserve a life too."
NightPDF is the tool I built because I was tired of blinding myself at 4 AM while studying. Unlike those "lazy" online converters that just turn your pages into low-res images, this thing uses pure math (blend modes) to invert colors while keeping the text sharp, selectable, and searchable.
- 🔒 100% Private: No uploads. No tracking. No "cloud" bullshit.
- 📚 Batch Mode: Drop a whole textbook or 50 PDFs. We don't care.
- 🖱️ Selectable Text: Highlight and copy text like a normal human being.
- 📱 PWA: Install it on your phone so you can study in the dark anywhere.
- 🌙 Website Dark Mode: Because the tool itself shouldn't be a flashbang.
Yeah, I added a "Download All" button and then immediately nuked it. Why? Because extracting ZIP files is a chore and I didn't feel like coding the extractor logic. Download your files one by one—it builds character.
- White Layer: We inject a solid white rectangle behind your content.
- Difference Mode: We draw another white rectangle on top with
BlendMode.Difference. - Magic: Colors flip. Black becomes white. White becomes black. Your eyes stop bleeding.
Built by @sudoax0n. Check my daily rants on X: @beyondwudan
No innocent PDFs were harmed. ✌️