JSON Viewer for Android - FAQ

JSON Viewer is an Android app that opens JSON files, formats them automatically, and displays them in a clean structured tree view. It is built for developers, testers, and anyone inspecting API responses, debugging files, or exploring structured data.

JSON Viewer is useful for developers, QA testers, support teams, students, and power users who need to read JSON without opening a heavy editor or building a custom tool.

Open JSON Viewer and tap Open JSON File. Android will show the system file picker, where you can choose a JSON file from device storage, Downloads, cloud storage apps, email attachments, or another app that provides files.

Yes. JSON Viewer can open or receive shared JSON files from file managers and other apps that provide application/json or text/json content.

Yes. Copy JSON text to your clipboard, open JSON Viewer, and tap Paste JSON. The app checks that the clipboard contains valid JSON before opening it.

Yes. Tap Load from URL, enter a link to a JSON document, and JSON Viewer downloads and opens it. URL history is saved so you can quickly reopen recent URL documents.

Yes. JSON Viewer can scan a QR code that contains JSON text or a link to a JSON file. Camera permission is used only for QR scanning.

Yes. JSON Viewer is free to download and use. The free version includes opening JSON, pretty tree viewing, expand and collapse, syntax highlighting, text search, save and share formatted JSON, copy key and value, session bookmarks, themes, and basic PDF export.

Yes. The free version may show ads. JSON Viewer Pro removes ads.

Pro unlocks larger JSON files, JSONPath search, copy JSON Path, export to CSV, export to YAML, unlimited PDF export, advanced PDF options, export selected nodes as JSON, persistent bookmarks, remembered expansion state, large file mode, and an ad-free experience.

No. JSON Viewer Pro is a one-time lifetime purchase. There are no subscriptions or recurring fees.

Local JSON files and pasted JSON are processed on your device. You can open, format, browse, search, copy, save, and export local JSON without uploading it to a backend. Features that naturally need a connection, such as loading JSON from a URL and showing ads in the free version, require internet access.

JSON Viewer does not upload local JSON files for viewing, parsing, searching, or exporting. Local files are processed on your device. If you use Load from URL, the app connects to the URL you entered to download that JSON document.

The free version supports JSON files up to about 2 MB by default. Pro removes that free limit and enables large file handling, but the practical maximum still depends on your device's available memory. The app also uses a safety limit to avoid opening files that are too large for the device to handle reliably.

Free users are shown an upgrade prompt when a file is over the free size limit. If a file is too large for the device to open safely, JSON Viewer shows a friendly error instead of crashing.

No. JSON Viewer is a read-only viewer. It does not edit the original JSON file in place. Save, share, and export actions create a new formatted file or export output.

Yes. JSON is formatted automatically when it opens, so a single-line minified file becomes readable in an indented tree view. You can also save or share the formatted result.

Yes. JSON opens in a structured tree view. Objects and arrays can be expanded or collapsed, and the viewer is designed to keep long documents easier to scan.

Yes. The viewer toolbar includes actions to expand all and collapse all nodes.

Yes. Free text search looks through keys and values, highlights matches, and lets you move through results or open the full results sheet.

Yes, with Pro. JSONPath search lets you run precise queries such as $.users[0] or searches for nested keys. Results can be opened and navigated directly in the viewer.

Yes. Jump to line lets you enter a line number and scroll directly to the matching JSON row. It is especially useful in long formatted documents.

Tap a JSON node to inspect details such as key, type, value preview, depth, child count, and JSON Path. Node details also include bookmark, copy, and export actions.

Yes. You can copy keys, values, a selected node as formatted JSON, a selected node as XML, or plain text collected from the selected node.

Yes, with Pro. Node details include a JSON Path section so you can copy the location of a value and reuse it in your own tools or queries.

Yes. You can bookmark nodes from node details and open the bookmarks sheet from the viewer toolbar. Free bookmarks last for the current session. Pro bookmarks are saved per file.

Yes, with Pro. JSON Viewer can remember expansion state so you can reopen a document and continue closer to where you left off.

Yes. File properties show metadata and structure details such as file name, size, root type, total nodes, object count, array count, primitive count, null count, max depth, key count, and unique key count.

Yes, with Pro. CSV export is designed for arrays of objects, where each object becomes a row and keys become columns. If the JSON structure is not suitable for CSV, the app shows a friendly message.

Yes, with Pro. YAML export converts the current JSON structure into a readable YAML file while preserving the document structure.

Yes. JSON Viewer can export JSON to PDF with full JSON or current view, black-and-white or color output, page numbers, and line number options. Free PDF export may be limited to the first 200 lines; Pro removes the line limit and unlocks advanced PDF options.

Yes. Save JSON and Share JSON are available in the free version. Save uses Android's save picker, and Share uses Android's share sheet.

Yes, with Pro. Node details include Export as JSON, which saves the selected node as its own JSON file.

Yes. Node details can copy a selected JSON node as XML. This is a copy action, not an in-place conversion of the original file.

No. JSON Viewer parses JSON so it can display the structure, but it does not perform JSON Schema validation, editing, auto-repair, API calls, account sync, or cloud workflows.

JSON Viewer shows a friendly error such as invalid JSON, permission denied, file read failed, or file too large. It does not show raw technical exceptions to users.

Yes. Settings include theme mode, color theme, indentation size, font size, line wrapping, line numbers, type badges, and large file mode for Pro users.

Yes. JSON Viewer supports light, dark, and system theme modes.

JSON Viewer supports Android 8.0 and newer. The app download size listed for the current release is about 4.65 MB.

Camera permission is used for QR scanning only. You can open JSON files, paste JSON, and load JSON from URLs without using the camera.

No. JSON Viewer does not require an account or sign-in.