What developer tools does Texterfly offer?

Texterfly offers 10 free developer tools: a JSON Formatter & Validator, an All-in-One Data Converter (JSON/CSV/XML/YAML), a JWT Decoder & Analyzer, a Cron Job Generator & Explainer, a QR Code Generator, a Password Generator, a Unix Timestamp Converter, a Lorem Ipsum Generator, an Interactive Data Visualization Builder, and a CSS Neumorphism Generator. All are free, browser-based, and require no signup.

How do I format and validate JSON online?

Paste your JSON into the JSON Formatter & Validator tool. It automatically detects syntax errors with precise line and column numbers, beautifies the output with proper indentation, and offers a minify option to compress the JSON for production use. You can also upload a .json file or fetch JSON from a URL.

How do I convert JSON to CSV (or CSV to JSON)?

Use the All-in-One Data Converter & Formatter. Paste your JSON or CSV, select the output format, and the conversion happens instantly. The tool also supports XML and YAML conversion, file upload, URL fetching, and JSONPath queries for extracting specific fields before converting.

How do I decode a JWT token?

Paste your JWT into the JWT Decoder & Analyzer. The tool instantly splits it into the header, payload, and signature sections, decodes the base64url encoding, checks expiration (exp claim), and detects common security issues like the "none" algorithm attack. For HS256 tokens, you can enter a secret key to verify the signature.

How do I write a cron job expression?

A cron expression has five fields: minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-7). Examples: "0 9 * * 1" runs every Monday at 9 AM; "0 0 * * *" runs daily at midnight; "*/15 * * * *" runs every 15 minutes. Use the Cron Job Generator to build and validate expressions visually with a real-time English translation.

What makes a password strong?

A strong password has: at least 16 characters (longer is better), a mix of uppercase and lowercase letters, numbers, and symbols, no dictionary words or predictable patterns, and is unique (never reused across accounts). The Password Generator creates cryptographically random passwords meeting all these criteria and shows an entropy-based strength score.

What is a Unix timestamp?

A Unix timestamp is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC (the Unix Epoch). It is the universal standard for representing time in computing. A 10-digit number is seconds; 13 digits is milliseconds; 16 digits is microseconds; 19 digits is nanoseconds. Use the Timestamp Converter to convert between Unix time and human-readable dates.

What is neumorphism in CSS?

Neumorphism (also called Soft UI) is a design style that uses a combination of two box shadows — one light and one dark — on a background that matches the element's color to create a soft, extruded or pressed appearance. The CSS Neumorphism Generator creates the exact box-shadow CSS code for any color, size, and depth with a live preview.

What is the structure of a JWT?

A JWT (JSON Web Token) consists of three base64url-encoded parts separated by dots: Header.Payload.Signature. The Header specifies the token type (JWT) and signing algorithm (e.g. HS256). The Payload contains claims — statements about the user or session like "sub" (subject), "exp" (expiration), "iat" (issued at), and "iss" (issuer). The Signature verifies that the token was not tampered with.

Are these developer tools free?

Yes. All 10 developer tools on Texterfly are 100% free with no registration, subscription, or payment required.

Is my code or data private?

Yes. All processing runs entirely in your browser using JavaScript. Your JSON, JWT tokens, passwords, and data are never sent to any server or stored anywhere. This makes the tools safe for sensitive tokens, credentials, and confidential data.

Can I use these tools for commercial projects?

Yes. All Texterfly developer tools are free for both personal and commercial use. There are no licensing restrictions on how you use the output.

Back to Developer Tools

cURL Command Converter

Paste a curl command and get JavaScript fetch, Axios, or Python requests code instantly. Free, no sign-up.

100% client-side. Your curl command is parsed in your browser and never sent anywhere — and the request itself is never executed. It only turns text into code.

curl Command

Try an example

Tip: in Chrome, Edge, or Firefox DevTools, right-click a request in the Network tab and choose Copy → Copy as cURL. Both bash and Windows cmd formats work.

Built into browsers and Node 18+

async / await

POST2 headersJSON body

fetch('https://api.example.com/v1/orders', {
  method: 'POST',
  headers: {
    Authorization: 'Bearer YOUR_TOKEN',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    item_id: 42,
    quantity: 2,
    gift: false,
    note: null,
  }),
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

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Convert curl Commands to fetch, Axios, or Python

API docs, Stripe examples, and browser DevTools all hand you a curl command — but your app is written in JavaScript or Python. Translating it by hand means re-quoting JSON, remembering how each library sends form data, and getting headers right. Paste the command above and get working fetch, Axios, or requests code instantly.

Which curl Options Are Converted?

🔀 Method & URL

-X / --request, --url, plus the implicit rules: -d makes it POST, -I makes it HEAD, and -G moves data into the query string.

📨 Headers, cookies & auth

-H, -b (cookies), -A (user agent), -e (referer), -u (basic auth), and --oauth2-bearer.

📦 Request bodies

-d, --data-raw, --data-binary, --data-urlencode, --json, and -F multipart forms. JSON bodies become real objects, form bodies become URLSearchParams or dicts.

⚙️ Behavior flags

-k / --insecure and -m / --max-time are converted where the library supports them. Cosmetic flags like -s, -v, and --compressed are safely ignored.

How to Copy a Request as curl from Your Browser

1️⃣

Open DevTools

Press F12 (or Cmd+Option+I on Mac) and open the Network tab, then trigger the request in the page.

2️⃣

Find the request

Click the request in the list — filtering by Fetch/XHR helps cut through the noise.

3️⃣

Copy as cURL

Right-click it and choose Copy → Copy as cURL. In Chrome and Edge you can pick the bash or Windows cmd format; this tool understands both.

4️⃣

Paste it above

The converter handles the long header lists and escaped JSON these commands contain. It also flags headers that browsers won't let JavaScript set.

Frequently Asked Questions

What does the cURL command converter do?

It parses a curl command — its URL, method, headers, body, and authentication — and generates equivalent code for JavaScript fetch, Axios, or Python requests that you can paste straight into your project.

Which languages and libraries are supported?

JavaScript using the built-in fetch API, JavaScript using Axios, and Python using the requests library. The JavaScript outputs can be switched between promise chains and async/await.

Is my curl command sent anywhere?

No. The command is parsed entirely in your browser and is never uploaded. The tool also never runs the request — it only converts text to code. Since curl commands often contain API keys or tokens, it's still wise to avoid pasting live secrets into any website.

Which curl options are supported?

Methods (-X), headers (-H), cookies (-b), user agent (-A), referer (-e), basic auth (-u), bearer tokens (--oauth2-bearer), request bodies (-d, --data-raw, --data-binary, --data-urlencode, --json), multipart forms (-F), query-string mode (-G), HEAD requests (-I), insecure mode (-k), and timeouts (-m). Options that don't affect the request itself, like -s or -v, are ignored.

How do I copy a curl command from my browser?

Open DevTools, go to the Network tab, right-click the request, and choose Copy → Copy as cURL. Chrome, Edge, and Firefox all offer this.

Why does my converted code behave differently from curl?

A few defaults differ. curl doesn't follow redirects unless you pass -L, while fetch, Axios, and requests do by default. curl also sends application/x-www-form-urlencoded when you use -d without a Content-Type header. And browsers block JavaScript from setting some headers, such as Cookie and Host. The tool flags the ones it can detect in the conversion notes.

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