Can I convert a JSON API response directly to Excel?

Yes, as long as the response is a valid JSON array of objects or NDJSON. Save the response body to a .json file and upload it to Deliteful. Each object becomes a row and keys from the first object become column headers.

What if my JSON has nested objects?

Nested objects and arrays are converted to their string representations in the cell. If you need true column expansion of nested fields, flatten the JSON before uploading — a one-liner with jq or a small script handles this upstream.

Does the tool support NDJSON?

Yes. Newline-delimited JSON — where each line is a standalone JSON object — is fully supported, making it useful for log exports, streaming API outputs, and BigQuery-style dumps.

Is there a file size or row limit?

Excel supports up to 1,048,576 rows per worksheet; files exceeding this are truncated. For very large datasets, paginate or split before uploading.

Turn JSON API Responses Into Excel Files Without Writing a Script

You've got a JSON payload from an API — a product catalog, a user export, a config dump — and someone needs it in Excel. Writing a throwaway conversion script is a distraction from real work. Deliteful converts JSON to .xlsx server-side in seconds, so you can hand it off and move on.

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Developers frequently produce or consume JSON that non-technical stakeholders need in spreadsheet form: QA exports, feature flag configs, seed data reviews, API response snapshots. The gap between 'I have the JSON' and 'here's the Excel file' is small but annoying. Deliteful closes it without requiring you to spin up a script, install a library, or open a notebook.

The tool supports standard JSON arrays and NDJSON, handles each object as a row, and derives headers from the first record. Nested values are stringified — which is appropriate for human review. If your JSON is already flat or mostly flat (as most export payloads are), the output Excel is immediately readable. Each file in, one .xlsx out. No configuration.

How it works

1
Sign in free
Create your Deliteful account via Google OAuth — 3 clicks, no credit card.
2
Upload the JSON file
Upload your JSON array or NDJSON export file.
3
Convert
Deliteful processes the file and generates a .xlsx with column headers from the first record.
4
Download and share
Download the Excel file and send it to whoever asked.

Frequently asked questions

Can I convert a JSON API response directly to Excel?: Yes, as long as the response is a valid JSON array of objects or NDJSON. Save the response body to a .json file and upload it to Deliteful. Each object becomes a row and keys from the first object become column headers.
What if my JSON has nested objects?: Nested objects and arrays are converted to their string representations in the cell. If you need true column expansion of nested fields, flatten the JSON before uploading — a one-liner with jq or a small script handles this upstream.
Does the tool support NDJSON?: Yes. Newline-delimited JSON — where each line is a standalone JSON object — is fully supported, making it useful for log exports, streaming API outputs, and BigQuery-style dumps.
Is there a file size or row limit?: Excel supports up to 1,048,576 rows per worksheet; files exceeding this are truncated. For very large datasets, paginate or split before uploading.