Does my JSON upload to Reckap?

No. Parsing and formatting run in your browser. Reckap does not receive the text for this tool.

What file types can I load?

Only .json, .txt, .ndjson, and .jsonl within the file size limit. Other types, including SVG and binaries, are refused.

When does CSV or XLSX export work?

For almost any JSON. Arrays of objects become rows. Object maps (for example a records dictionary) become rows with a _key column. Nested fields flatten to dotted column names; deep arrays may be stored as JSON text in a cell. Very large tables are capped by row and column limits.

What are the safety limits?

About 2 million characters, nesting depth 32, and 50,000 object keys, plus a 2 MB file load cap. Oversized input fails closed with a clear error.

Products

JSON Formatter

Validate, format, minify, or sort JSON / NDJSON in the browser - optional CSV/XLSX for flat arrays.

Use tool How we work

reckap.com/products/json-formatter

Runs in your browser. Files stay on your device - Reckap does not upload them for this tool.

JSON formatter

Validate, pretty-print, minify, or sort JSON / NDJSON in this browser. Optional table export for flat arrays - nothing is uploaded.

Options

Document mode

JSONNDJSON

Indent

Sample

Export format

Sort object keysLive format preview

Input

Type

object

Depth

Keys

Chars

Size

88 B

Array len

Output (syntax colors)

Structure preview

ok:trueboolean

service:"reckap"string

region:"us-west"string

version:1number

}

Sheet export preview: 1 × 4 via root-object-flat. Single row: entire object flattened to dotted columns.

Caps (fail closed)

Accepts .json / .txt / .ndjson / .jsonl only. SVG and binary types are refused. Processing stays on this device.

Business toolsweb

Reckap JSON Formatter validates and pretty-prints JSON or NDJSON on your device. Review structure stats, sort keys, then copy or download JSON, CSV, or XLSX. Nothing is uploaded to Reckap.

Format and validate JSON or NDJSON on your device with Reckap JSON Formatter. Pretty-print with 2/4/tab indent, minify, sort keys, review type/depth/key stats and a structure path preview, then copy or download JSON. Flat arrays of objects can export as CSV ZIP or XLSX tables. Load .json, .txt, .ndjson, or .jsonl within size and nesting caps. Nothing is uploaded to Reckap.

JSON + NDJSON with live format preview
Syntax colors + collapsible structure tree
Sort keys, minify, indent 2/4/tab
CSV/XLSX for nested maps and arrays
Size / depth / key caps - no upload

Related industries: it operations

Use tool Talk to Reckap

How to use

Paste or load JSON
Paste text or load a .json / .txt / .ndjson / .jsonl file. Size, depth, and key caps are checked before processing.
Format or minify
Choose indent, optional key sort, and JSON or NDJSON mode. Live preview updates the output pane when enabled.
Copy or export
Copy the result, download JSON, or export CSV/XLSX. Nested records maps and arrays are flattened to dotted columns. Work stays in this browser.

FAQ

Related tools

More Reckap browser tools in the same lane.

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