# cURL to fetch converter

> Convert supported command options into editable JavaScript requests.

[Open tool](https://www.toolcabana.com/ii/curl-to-fetch-converter) · [Developer utilities](https://www.toolcabana.com/ii/category/developer-utilities)

Tool ID: curl-to-fetch-converter. Requested language: ii. Description language: en. Complete guide translation: no; untranslated sections use English.

## Overview (en)

The cURL to fetch converter turns a cURL command into JavaScript code that calls fetch with the same URL, method, headers and body, then reads the response as text. It understands -X, -H, -d, --data-raw, --data-binary and --url, and ignores -L, --compressed and -s. It only generates code and never sends the request.

## Supported tasks (en)

Convert supported command options into editable JavaScript requests.

## Steps (en)

1. Paste the source into the input editor, or load the built-in example.
2. Check the source format before running the operation.
3. Run curl to fetch converter, review the output, then use the available copy or download controls.

## Settings

No additional settings.

## Limitations (en)

CSV/XLSX inputs are capped at 10 MB each, 200 columns and 20,000 rows; joined output is capped at 20,000 rows. JSONPath script/filter evaluation is disabled. Other operations apply their visible controls and text limits.

## Example input

```text
curl 'https://example.com/api' -X POST -H 'Content-Type: application/json' --data '{"hello":"world"}'
```

## Privacy and connections (en)

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

## Questions (en)

### Which cURL options are supported?

Supported options are -X or --request, -H or --header, -d, --data, --data-raw, --data-binary and --url. The flags -L, --location, --compressed, -s and --silent are accepted and ignored. Any other option returns an Unsupported cURL option error naming the flag.

### What HTTP method is used when the command has a body?

If the command sends data with -d or a --data variant and no method is set, the converter switches the method from GET to POST, as cURL does. An explicit -X value is kept as written.

### Why is my cURL command rejected?

Commands must start with curl, contain one http or https URL and use balanced quotes. Shell substitution with backticks or $( ) is refused, and bodies read from a file with @filename are not supported. Paste the literal body instead.

### Where is my input processed?

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

### What are the input limits?

CSV/XLSX inputs are capped at 10 MB each, 200 columns and 20,000 rows; joined output is capped at 20,000 rows. JSONPath script/filter evaluation is disabled. Other operations apply their visible controls and text limits.

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