# Nightglass

> Nightglass is a private PDF and document editor that runs on your computer. It stays fast on huge construction drawing sets, and every document is processed locally: no account, no tracking, no analytics. It is built for Mac, Windows and Linux: available on Mac first, with Windows and Linux in beta. Free tier; Pro is $12 a month or $99 a year, with a 14-day trial that needs no card, or a $299 founders lifetime license.

## Who it is for

Professionals who work with large PDFs: construction, engineering, architecture, legal and healthcare. It runs natively on Mac, Windows and Linux, and is an alternative for people who use Bluebeam Revu (whose desktop app is Windows only) or Adobe Acrobat.

## Platforms and requirements

- Built for Mac, Windows and Linux. Available on Mac first; Windows and Linux are in beta.
- Pixel, the optional AI assistant, needs 16 GB of memory, and macOS 14 or later on a Mac.
- Full system requirements will be published at launch. Downloads and checkout open at launch.

## Pricing

- Free: $0. No card and no account.
- Pro: $12 a month or $99 a year. 14-day trial, no card required.
- Founders lifetime: $299 once, a temporary founders price that includes the founder badge.
- Refund details will be published at launch.

## Free includes

- A very fast viewer, even for huge drawing sets
- Full annotation and markup studio
- Branching History tree
- Fill and sign forms, with field detection
- Merge, split and reorganize pages
- Searchable scans with automatic OCR
- Find all instances, with whole-sentence highlights
- Links, contents pages and cross-document links
- Compress and password-protect (AES)
- Nine themes and Air-Gap mode

## Pro adds

- Pixel, a private AI assistant that runs on your computer, and Pixel spreadsheets
- Inline editing of real PDF text
- Measurement and takeoff, with quantities to Excel
- Compare drawing and text revisions, with review and reports
- Convert, and extract tables and text to Excel, Word and CSV
- Permanent redaction that truly removes content
- Bates numbering and exhibit stickers; headers, footers, watermarks and PDF/A
- Batch sheet linking for drawing sets
- Export Find results to Excel, CSV and PDF
- Advanced image editor, batch form fill, watched folders and templates
- Toolkit: styled tools and shareable tool sets
- XFDF markup exchange and Google Drive or Dropbox sync

## Measured with real drawing sets

- Four real drawing sets (511 sheets) open at once, with Nightglass using under 3 GB of memory.
- On a heavy 165-sheet set, a zoomed view sharpens in about 1 to 2 seconds.
- Batch sheet linking linked 969 sheet references across four sets; reading the pages took about 14 seconds.

## Privacy

- Every document is processed on the computer and never leaves it.
- No account, no tracking, no analytics.
- Pro checks its license key about once a day; the check never includes files.
- Google Drive or Dropbox storage sync is optional and off unless the user turns it on.
- Air-Gap mode blocks every network connection.

## Pixel (optional AI, Pro)

- Runs a 4B model privately on the computer.
- One-step setup downloads the engine and model once; after that it works offline.
- Pixel can make mistakes. Check important numbers against the source.

## Honest limits

- Windows and Linux versions are in beta.
- Pixel needs 16 GB of memory (macOS 14 or later on a Mac) and can make mistakes.
- Bluebeam Revu's takeoff toolset is the industry standard, and Bluebeam is more established with AEC teams.
- Adobe Acrobat's text editing is mature and widely used.

## Pages

- [Home](https://night.glass/): product overview, FAQ and pricing
- [Nightglass at a glance](https://night.glass/facts): quotable facts, pricing and system requirements
- [Comparison](https://night.glass/comparison): Nightglass vs Bluebeam Revu, Adobe Acrobat, Foxit, PDFgear and PDF-XChange
- [Nightglass vs Bluebeam Revu](https://night.glass/compare/bluebeam)
- [Nightglass vs Adobe Acrobat](https://night.glass/compare/acrobat)