TLDR

Local AI document summarizer for Windows.
Paste or drop text, get a concise summary. No cloud, no API keys, no data leaves your machine.

Features

Feature	Description
Local AI	Phi-4 Mini via Microsoft Foundry Local (CPU, GPU, or NPU)
5 summary styles	Bullets, Numbered List, Table, Prose, Same Format
3 detail levels	Brief (~20%), Standard (~35%), Detailed (~50%)
Read Aloud	Sentence-by-sentence TTS with synchronized highlighting
File support	PDF, DOCX, TXT, Markdown drag-and-drop
Global hotkeys	Ctrl+Shift+S to open and paste, Ctrl+Shift+X to stop reading
System tray	Runs in background, always one hotkey away
Fluent UI	WPF-UI Mica window with dark, light, and system themes

Install

Option A: Download release (recommended)

1. Install Microsoft Foundry Local: winget install Microsoft.FoundryLocal
2. Download the latest ZIP from Releases
3. Extract and run Tldr.exe

The release is self-contained: no .NET install needed.

Option B: Build from source

winget install Microsoft.FoundryLocal
dotnet build src\Tldr\Tldr.csproj
dotnet run --project src\Tldr\Tldr.csproj

On first launch the app downloads Phi-4 Mini (~2.4 GB). After that it works fully offline.

Usage

1. Paste text with Ctrl+V, or press Ctrl+Shift+S from any app
2. Or drop a PDF, DOCX, TXT, or Markdown file onto the window
3. Pick a style and detail level
4. Click Distill to summarize locally
5. Read Aloud to hear it spoken with sentence highlighting

Documentation

Document	Description
Getting Started	Installation, first summarization
User Guide	Full feature reference
Keyboard Shortcuts	Hotkey quick reference

Project Structure

src/Tldr/
  Core/             Summarizer, PromptBuilder, FileExtractor, MarkdownRenderer, Config
  Platform/         MainWindow, ViewModel, SapiTtsEngine, HotkeyManager, TrayIcon
  Assets/           output.html (WebView2 template), icon
  prompts.json      LLM prompt fragments
  appsettings.json  Runtime configuration
docs/
  assets/           Banner and branding images
  plans/            Implementation plan and solution vision
  reviews/          Code, UI/UX, security, RAI, accessibility, resilience, performance, license
  user/             Getting started, user guide, keyboard shortcuts
scripts/            Replicate image generation (banner, icon)
test-cases/         Sample documents for testing

Release

Pushing a version tag triggers the GitHub Actions pipeline, which builds a self-contained single-file exe and publishes a GitHub Release with the ZIP attached.

git tag v0.1.0
git push origin v0.1.0

Manual publish

dotnet publish src\Tldr\Tldr.csproj -c Release -r win-x64 --self-contained -p:PublishSingleFile=true -p:IncludeNativeLibrariesForSelfExtract=true -o publish

License

MIT