Lightmark

Lightmark is a local desktop app for turning photo metadata into clean, exportable summary cards for use on social media. Open a photo, review or edit the extracted EXIF details, add production notes, choose a visual theme, and export the result as a PNG or JPG. It's Photo Summary, but clean, faster and more feature packed. And the best of all: Open Source and free.

Features

• Open JPEG, PNG, TIFF, HEIC, and HEIF images.
• Extract common camera metadata, including aperture, shutter speed, ISO, focal length, camera body, lens, capture time, and bit depth.
• Add production metadata such as lighting modifier, light source, photographer, and notes.
• Preview a styled summary card with a blurred image background.
• Switch themes, adjust blur strength, and save reusable presets.
• Export rendered cards as PNG or JPG.
• Runs as a Tauri desktop app, with browser-based development support through Vite.

Tech Stack

• React 18
• TypeScript
• Vite
• Tauri 2
• Rust

Requirements

• Node.js and npm
• Rust toolchain
• Tauri system dependencies for your platform

For Tauri setup details, see the official prerequisites: https://v2.tauri.app/start/prerequisites/

Getting Started

Install dependencies:

npm install

Run the desktop app in development mode:

npm run tauri:dev

Run the web frontend only:

npm run dev

Quality Checks

Run TypeScript and Rust checks:

npm run check

Run tests:

npm test

Build the frontend:

npm run build

Build the desktop app:

npm run tauri:build

Project Structure

src/              React frontend
src/lib/          Metadata parsing, rendering, themes, and Tauri API helpers
src-tauri/        Tauri/Rust desktop shell
dist/             Frontend build output

Notes

Lightmark is designed to run locally. Imported images are processed on-device, and presets/settings are stored locally in the app environment.