JSON Viewer
Explore JSON files as a collapsible tree with search. Great for API responses and exports. Private.
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Runs entirely in your browser — nothing is uploaded
How to use the JSON Viewer
- 1
Open your JSON file
Click the box or drag the file onto it. It’s read by your browser — nothing is uploaded.
- 2
Read it instantly
The content appears on the page in a second or two, even for large files.
- 3
Convert if you need to
Use the related converters below to turn the file into PDF, CSV or another format.
Big JSON files are unreadable as raw text. The viewer turns them into an expandable tree with types, array lengths and a search box, so you can find the field you need in seconds.
Read the full guide with screenshotsFrequently asked questions
Is the JSON Viewer free?
Yes — completely free with no daily limit and no account. ZapMorph’s viewers and developer tools are unmetered.
Is my file uploaded to a server?
No. The file is opened by your browser and displayed on this page. It is never uploaded, stored or logged — close the tab and it’s gone.
Does it work on my phone?
Yes. It works in any modern browser on iPhone, Android, Windows, Mac and Linux, with nothing to install.
How large can the file be?
There is no fixed limit — it depends on your device’s memory. Files of a few hundred megabytes open fine on most computers.
Related converters
JSON to CSV
JSONCSV
Convert JSON arrays to CSV for Excel and Google Sheets. Nested objects are flattened automatically.
JSON to Excel
JSONExcel
Convert JSON data to an Excel spreadsheet. Nested objects become columns. Free, no uploads.
JSON to YAML
JSONYAML
Convert JSON to clean, readable YAML for config files. Free, instant, runs in your browser.
JSON to XML
JSONXML
Convert JSON to well-formed, indented XML. Keys prefixed with @_ become attributes. Free and private.
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