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JSON to CSV Converter

Convert JSON responses into clean CSV files with header mapping, domain-aware formatting, and private in-browser processing.

Input

Paste arrays of objects, NDJSON logs, or API responses that include repeating records.

Quick samples

Drag & drop or click to import a .json payload—everything stays inside this tab.

Enable when each line is its own JSON object, such as log exports or BigQuery results.

Creates columns like dns.aRecords[0]. Disable to keep arrays serialized as JSON strings.

What is the JSON to CSV Converter?

A browser-based data utility that transforms structured JSON responses into analyst-friendly CSV files without installing command-line tools or exposing private payloads.

Key Features

One-click flattening turns nested JSON structures into tidy spreadsheet columns.
Automatic quoting and header normalization keep domains, URLs, and Unicode text intact across Excel, Sheets, and Numbers.
Live preview surfaces row counts, column names, and sample data before you export.
Private, in-browser processing means sensitive audit logs and customer data never leave your device.

How to Use

1

Paste JSON or drop a .json file that contains the domain or URL data you need—such as a crawl report or API response.

2

If your payload wraps the records in a parent object, keep only the array of entries so every row shares the same fields.

3

Run the converter and inspect the live preview to confirm the domain column, metrics, and row counts look correct.

4

Copy or download the CSV, then share it with SEO teams, upload it to a BI tool, or merge it into a spreadsheet template.

Common Mistakes to Avoid

Pasting malformed JSON—missing braces or trailing commas—which results in blank or partial exports; validate the payload first.
Mixing objects with different keys in the same array, causing empty columns; ensure every domain record uses consistent property names.
Ignoring data types when you need formulas later; convert metrics or timestamps to the correct format before exporting.

Examples

Turn a Google PageSpeed Insights JSON response with URLs and Core Web Vitals into a CSV for Looker Studio dashboards.
Convert an SEO crawler's JSON API feed into CSV so editors can triage broken links, redirect chains, or hreflang issues.
Flatten an eCommerce product catalog JSON into CSV for merchandising teams, price comparison uploads, or marketplace templates.

FAQ

What JSON structures can I convert?

Feed arrays of objects, newline-delimited JSON (NDJSON), or API responses that list domain records. The converter scans for repeating keys, expands nested properties into dot-notated columns, and ignores metadata blocks you choose not to export.

How large of a payload can the JSON to CSV Converter handle?

Most browsers comfortably flatten 5–8 MB of JSON (roughly ten thousand rows). Split massive exports into batches or filter upstream if you notice the preview slowing down.

Does the converter upload my data or call external APIs?

No. Everything happens inside your browser tab, so access logs, keyword data, and customer information never leave your device.

How are nested arrays or objects flattened?

Child objects become columns using dot notation (for example seo.domain or dns.aRecords[0]). Arrays produce indexed columns so every position becomes its own cell, keeping spreadsheets predictable.

How do you treat domains, URLs, or text that contains commas?

Cells are wrapped in quotes and internal quotes are escaped so marketing URLs, referral domains, and long titles stay intact when you open the CSV in Excel, Sheets, or Numbers.

Can I control column order or hide specific fields?

Review the preview table before exporting; if a field should stay private, remove it from the JSON payload before converting. That guarantees only the headers you trust appear in the final CSV.

Related Tools

CSV to JSON Converter