JsonTreeViewer is a Compose Multiplatform desktop app to display JSON data. It's based on the library JsonTree.
JsonTreeViewer is an Compose Multiplatform desktop app to display formatted JSON data.
The tree can be expanded and collapsed and show additional metadata like array indices and item counts in arrays and object. By using the search field, the tree can be search for keys and values. The info panel shows data about the json file itself.
Files with the extension .json and .txt can be opened via drag and drop, or data can be pasted directly with ctrl+v or cmd+v.
JsonTreeViewer runs on MacOS, Windows and Linux using the JVM.
Get the latest binary from the releases page or build from source by running:
./gradlew :composeApp:packageDistributionForCurrentOS
Since this is a hobby project, the macOS app is not signed with a developer ID from Apple. When opening the app, there might pop up a window saying the app can't be opened. If you encounter this issue, then you can try to take the app out of quarantine mode with the following terminal command. Then try opening the app again.
Disable quarantine mode for this app:
sudo xattr -d com.apple.quarantine /path/to/app/JsonTreeViewer.app
JsonTreeViewer
Copyright © 2025 SNAD
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
See LICENSE to read the full text.