Online utilities for formatting, encoding/decoding etc are dangerous to use (many of them steal secrets from your data) and are in fact prohibited at many workplaces. This offline desktop app is a collection of many such utilities:

• Base64 Encoding/Decoding
• JSON Formatting / Validating / Extracting
• JSON <-> YAML Conversion
• QR Image <-> Text Conversion
• JWT Inspection
• More coming soon

This app is written in Flutter and therefore, works on MacOS, Linux, Windows and even Web if your org would like to host it internally as a webapp. But do not expect this to work on Android and iOS.

Make sure to read the LICENSE and the CLA.

MacOS:

1. ensure your flutter base is up-to-date : devtools requires SDK version >=2.15.1 <3.0.0, version solving failed.

flutter update

2. ensure desktop building is enabled otherwise you will get an error "build macos" is not currently supported. To enable, run "flutter config --enable-macos-desktop".

flutter config --enable-macos-desktop

3. Build the app using flutter build macos --release this will generate the .app file in build/macos/Build/Products/Release/devtools.app.

Convert the app to DMG using create-dmg tool 4. ensure the create-dmg tool is installed brew install create-dmg

5. Create a DMG file test -f DevTools.dmg && rm DevTools.dmg && create-dmg --app-drop-link 400 100 --icon-size 50 --window-size 600 400 --window-pos 400 400 DevTools.dmg build/macos/Build/Products/Release/devtools.app

Windows:

1. ensure your flutter base is up-to-date : devtools requires SDK version >=2.15.1 <3.0.0, version solving failed.

flutter update

2. ensure desktop building is enabled otherwise you will get an error "build windows" is not currently supported. To enable, run "flutter config --enable-windows-desktop".

flutter config --enable-windows-desktop

3. Build the app using flutter build windows --release this will generate the .exe file in \build\windows\runner\Release\devtoolbox.exe.

We use macos_ui. You can find examples of all their widgets here.