JSON Converter

JSON

Loading JSON Converter

Settings

JSON Converter runs on your device

Runs in your browser

No uploads.There is no file-upload endpoint on duck.tools. This tool process your input inside this browser tab.
No tracking.No analytics and no tracking cookies. Sign-in uses a session cookie and loads Cloudflare Turnstile only when you open the account dialog.
We never see your data.Your file never reaches a Duck Tools server, so there is nothing for us to store, read or leak.

Conversion happens in this page. Your JSON never leaves the browser tab.

To be precise: your browser still downloads this page, its scriptsover the network, and our web server keeps standard access logs. What never travels is the content you put into a local tool.

Read the full privacy page →

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No password. We email you a sign-in link.

Human check

Saving presets across devices is next. For now this just signs you in.

How we handle your email

JSON Converter

Convert JSON to YAML, XML, CSV, TSV, NDJSON or dotted keys.

Turn a JSON document into YAML, XML, CSV, TSV, newline-delimited JSON or flattened key paths. CSV needs an array. Conversion stays in this tab — we do not fetch or upload anything.

How it works

Paste JSON or load a file.
Pick YAML, XML, CSV, TSV, NDJSON or dotted keys.
CSV and TSV need a JSON array of objects, arrays or values.
Copy or download the converted text.

Also known as

json
convert
yaml
xml
csv
ndjson

Related tools

JSON FormatterPretty-print JSON and inspect it as text or a collapsible tree.
JSON DesignerBuild JSON structures and datasets from a visual editor, then copy the result.
JSON CompressorMinify JSON, optionally drop empty values and trim string whitespace.

LOCALRuns in your browser

No uploads.There is no file-upload endpoint on duck.tools. This tool process your input inside this browser tab.
No tracking.No analytics and no tracking cookies. Sign-in uses a session cookie and loads Cloudflare Turnstile only when you open the account dialog.
We never see your data.Your file never reaches a Duck Tools server, so there is nothing for us to store, read or leak.

Conversion happens in this page. Your JSON never leaves the browser tab.

To be precise: your browser still downloads this page, its scriptsover the network, and our web server keeps standard access logs. What never travels is the content you put into a local tool.

More json tools →Full privacy page →