What does Is JSON do that other Developer pages on this site do not?

ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size. Short version: JSON validity with type and byte size.

Does Is JSON upload my file or text to Tool-You servers?

No. Is JSON runs in this browser tab. Files stay on the device. Limit note: Empty input fails. Invalid JSON returns ok 0.

Should I use JSON Typeof instead of Is JSON?

Use Is JSON when you need JSON validity with type and byte size. Use JSON Typeof when you need Root JSON type plus size hint. They share a category (Developer) but not the same job.

Is JSON

JSON validity with type and byte size.

ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size.

What Is JSON does

ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size.

The interactive controls for Is JSON load after this article so crawlers still read the instructions. Path /developer/is-json is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for Is JSON.

How to use Is JSON

Keep this tab on Is JSON (/developer/is-json). Pasting into the wrong Developer tool (for example JSON Typeof) changes the job.
Paste or type the input Is JSON expects. Path hint: developer · is json. JSON validity with type and byte size.
Apply the Is JSON action only. JSON Formatter is a different transform (Pretty-print or minify JSON with indent and optional key sort.). ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size.
Copy the output of Is JSON if you need it elsewhere. Size/complexity still follows: Empty input fails. Invalid JSON returns ok 0.
If the text job is actually Root JSON type plus size hint., leave Is JSON and open JSON Typeof.

When not to use Is JSON

Skip Is JSON when a neighbor tool matches better — start with JSON Typeof or JSON Formatter — or when the description already warns the job will fail. In the tool’s own words: ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size.

Questions about Is JSON

What does Is JSON do that other Developer pages on this site do not?: ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size. Short version: JSON validity with type and byte size.
Does Is JSON upload my file or text to Tool-You servers?: No. Is JSON runs in this browser tab. Files stay on the device. Limit note: Empty input fails. Invalid JSON returns ok 0.
Should I use JSON Typeof instead of Is JSON?: Use Is JSON when you need JSON validity with type and byte size. Use JSON Typeof when you need Root JSON type plus size hint. They share a category (Developer) but not the same job.
What are the limits of Is JSON?: Empty input fails. Invalid JSON returns ok 0. Also: ok is 1 when JSON.parse succeeds. type is object/array/null/number/string/boolean. bytes is UTF-8 size.