Folio

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Folio is a local-only macOS PDF toolbox published by TGthms. Pages live in one workspace. Tools are modes over that workspace. Files never leave this Mac. Export never overwrites an original unless you confirm.

Requires macOS 15+ and Xcode 16 / 26 to build.

Product

Drop PDFs or images into a single workspace, arrange pages, pick a job, then export.

• Merge, split / extract, rotate, reorder, delete
• Compress
• Watermark and page numbers
• Images ↔ PDF
• Protect and unlock
• Extract text and OCR
• True redaction (redacted pages are rasterized)
• Edit: the same scrollable PDF view as Read. Highlight and underline follow a text selection; text is typed on the page; draw and crop use a drag; marks can be moved or deleted. They are PDF annotations and burn on Save / Export. Existing PDF text is not rewritten.
• Read mode scrolls every page in the workspace
• 30 interface languages, including RTL; language follows macOS
• Sandboxed. No network entitlement. Work stays on this computer.

The running app is named Folio. This repository is folio.

Build

Open the project in Xcode:

open Folio.xcodeproj

Or build the app from the terminal:

./scripts/build-app.sh
open build/Folio.app

The script regenerates Folio.xcodeproj and the string catalog, then produces build/Folio.app.

Use

Drop PDFs or images onto the window. Arrange pages, pick a job in the sidebar, then Export….

• ⌘O add files · ⌘S save · ⇧⌘S export · ⌘P print
• ⌘1 Pages · ⌘2 Read (scrolls the whole workspace)
• ⌘] / ⌘[ next / previous page · ⌥⌘↑ / ⌥⌘↓ first / last
• arrows, j/k, Page Up/Down, Home/End
• ⌘R / ⇧⌘R rotate · ⌘⌫ remove from workspace · ⌘A select all pages
• ⌘I inspector · ⌘K command palette · ⌘Z undo

Language follows System Settings → Language & Region. Override it in Settings; the interface updates immediately.

Tests

export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer
xcodebuild -project Folio.xcodeproj -scheme Folio -destination 'platform=macOS' test
./scripts/verify-export-paths.sh

scripts/run-protect-write-driver.sh compiles shipped PDFIO.swift into build/protect-write-driver and writes a passworded PDF. FolioLogicTests execs that driver — PDFKit encrypt deadlocks inside the Folio.app XCTest host, so protect is not run in-process there.

License

MIT © 2026 TGthms