Barcode Generator API

POST

Produce scannable barcode images from any product code or text.

Barcode Generator creates downloadable barcode images from text or product codes in Code 128, Code 39, EAN-13, EAN-8, UPC-A, UPC-E, ITF-14, Codabar, MSI and other linear formats, with bar width, height and margin adjustable on paid plans. Each response provides a temporary image download link, the image size in pixels, file format, and expiration timestamp.

Try it — live request, no key required

Request

POSTapi.apiverve.com/v1/barcodegenerator

Body

datastring

typestring

Verification

Format

No key required to try it. Get a key to use it in your app.

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "imageName": "cc85680f-a1d0-4627-89ff-7d7e53663a2b.png",
    "format": ".png",
    "type": "CODE128",
    "expires": 1766010012598,
    "downloadURL": "https://storage.googleapis.com/apiverve/APIData/barcodegenerator/cc85680f-a1d0-4627-89ff-7d7e53663a2b.png?GoogleAccessId=635500398038-compute%40developer.gserviceaccount.com&Expires=1766010012&Signature=cV6ANXGGaVDdl5SOFZt3xm2haHBnOklW1zXQICvJlGNlF4kwYVP9i%2F1RAN8NBGxSUiMk4Zcro%2FJUb3W%2Fwy8jA86pyEXTwIjNAiGW94ikpKSXs6%2FiV42Rwv6u2gX%2B2FH7XYyixlwJ%2B%2FHpfGcvka6u01FDk%2F2TUcR7%2FxsZ%2FmXPU2KTrzsI6XttCGBcHhex3LdTv%2F8tzMJbSshbZn%2BGcRTddwv6dC4lCcTtGE6Bl2zqY9s92KIr9X%2F4xj34q4XKBzywgXES57QaVhZeGPPOOUfLtI3pAN8fVSyM%2B9NBMU7R46xyqJ0J8PSVpQZhhAHn03T%2B40rcNp26GXqauM9K%2BLwZRw%3D%3D",
    "imageWidth": 468,
    "imageHeight": 82
  }
}

Start from a template — a working app you can deploy in a minute

Barcode Generator

Make Code 128 and Code 39 barcode images for products, shelves and shipping labels.

Node.js
Express

Deploy to Vercel See the template →

About the Barcode Generator API

This barcode API handles barcode generation in one call: send a SKU, order ID, product number or any text and get back a scannable barcode image. Choose Code 128 (including the A, B and C subsets), Code 39, retail EAN-13, EAN-8, UPC-A and UPC-E, the EAN-2 and EAN-5 add-ons, ITF-14 and ITF for cartons, Codabar, MSI or Pharmacode, and optionally hide the text label beneath the bars. The API renders the image and returns a temporary download URL, image filename, pixel width and height, and Unix expiration timestamp. Paid plans can set the bar width, bar height and quiet-zone margin, and customize line and background colors and the label font size and spacing.

What people use it for

Warehouse Inventory Labeling: Logistics managers turn incoming SKU numbers into Code 128 barcodes to print adhesive tracking tags for pallet racks.
Retail Order Invoicing: When generating digital receipts, e-commerce storefronts append Code 39 barcode images so cashiers can scan returns at store counters.
Event Ticket Production: Embed unique scannable barcodes on printable PDF conference badges before sending confirmation emails to attendees.
Internal Asset Tracking: IT teams create compact Code 128 tags without bottom text labels to catalog laptops and monitors in inventory databases.

Without writing code

Barcode Label Generator & Reader for Windows prints barcode labels at true size.

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Other ways to use Barcode Generator

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit

Questions.

Common questions about the Barcode Generator API.

Read the docs →

Which barcode formats does the barcode API support?

Set the type parameter to code128 (or the code128a, code128b and code128c subsets), code39, ean13, ean8, upc, upce, the ean5 and ean2 add-ons, itf14, itf, codabar, msi (with msi10, msi11, msi1010 and msi1110 check digits) or pharmacode. Code 128 suits SKUs and shipping labels, EAN and UPC are the retail symbols, and ITF-14 marks cartons. EAN and UPC take digits only; leave off the check digit and it is calculated for you. QR codes come from the separate QR Code Generator API.

What would 5,000 barcode generations cost me?

Generating 5,000 barcodes requires 50,000 credits, using a quarter of the Starter plan's 200,000 monthly credits. That volume works out to about $0.0015 per call, or $1.50 per 1,000 barcodes. The Starter plan covers up to 20,000 generations per month, while the Free plan includes 20.

Can I change barcode colors on the Free plan?

No, custom line and background colors require a paid plan. Barcodes generated on the Free plan use the default black lines on a white background. Subscribing to Starter or above unlocks custom line and background color parameters.

Do the barcode download links expire?

Yes, download links are temporary. The response includes an expiration Unix timestamp showing when the download URL becomes invalid. You should download and store the barcode image in your own storage instead of permanently hotlinking the URL.

Can I omit the text label beneath the barcode?

Yes, set the display value parameter to false to hide the encoded string. The human-readable text appears beneath the bars by default, but you can turn it off whenever your packaging or label layout requires only the barcode pattern.

Can I control the size of the barcode image?

Yes, on paid plans. barWidth sets the width of the narrowest bar in pixels (1 to 10), height sets the bar height (10 to 500 pixels) and margin sets the quiet zone around the symbol (0 to 100 pixels), and fontSize and textMargin set the label. On every plan the response reports the finished image's pixel width and height so you can place it on a label.

How is the generated barcode delivered to my application?

The API returns a direct download URL for the generated image alongside its filename and file format. Your application can immediately fetch the image asset from that link to render or archive it.

Request parameters — POST /v1/barcodegenerator

Sent as JSON in the request body. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

Parameter	Type	Example	Description
`data`Required	string	`1234567890`	The data you want to generate a barcode from (string)
`type`Required	string	`code128`	The type of barcode you want to generate `code128code128acode128bcode128ccode39ean13ean8ean5`+12

Optional

Parameter	Type	Example	Description
`lineColor`OptionalPremium	string	`black`	The color of the barcode (default: #000000)
`backgroundColor`OptionalPremium	string	`white`	The background color of the barcode (default: #ffffff)
`displayValue`Optional	boolean	`true`	Whether to display the value below the barcode (default: true)
`barWidth`OptionalPremium	integer	`2`	Width of the narrowest bar in pixels (default: 4) default 4 · range 1-10
`height`OptionalPremium	integer	`80`	Height of the bars in pixels (default: 40) default 40 · range 10-500
`margin`OptionalPremium	integer	`10`	Quiet-zone margin around the barcode in pixels (default: 10) default 10 · range 0-100
`fontSize`OptionalPremium	integer	`20`	Font size of the text label in pixels (default: 20) default 20 · range 8-72
`textMargin`OptionalPremium	integer	`2`	Space between the bars and the text label in pixels (default: 2) default 2 · range 1-50

Example request

curl -X POST "https://api.apiverve.com/v1/barcodegenerator" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"data":"51001544700","type":"code128","lineColor":"#000000","backgroundColor":"#FFFFFF","displayValue":true,"barWidth":1,"height":1,"margin":1,"fontSize":1,"textMargin":1}'

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.
`content-type`Required	POST body	`application/json`

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Response — POST /v1/barcodegenerator

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "imageName": "cc85680f-a1d0-4627-89ff-7d7e53663a2b.png",
    "format": ".png",
    "type": "CODE128",
    "expires": 1766010012598,
    "downloadURL": "https://storage.googleapis.com/apiverve/APIData/barcodegenerator/cc85680f-a1d0-4627-89ff-7d7e53663a2b.png?GoogleAccessId=635500398038-compute%40developer.gserviceaccount.com&Expires=1766010012&Signature=cV6ANXGGaVDdl5SOFZt3xm2haHBnOklW1zXQICvJlGNlF4kwYVP9i%2F1RAN8NBGxSUiMk4Zcro%2FJUb3W%2Fwy8jA86pyEXTwIjNAiGW94ikpKSXs6%2FiV42Rwv6u2gX%2B2FH7XYyixlwJ%2B%2FHpfGcvka6u01FDk%2F2TUcR7%2FxsZ%2FmXPU2KTrzsI6XttCGBcHhex3LdTv%2F8tzMJbSshbZn%2BGcRTddwv6dC4lCcTtGE6Bl2zqY9s92KIr9X%2F4xj34q4XKBzywgXES57QaVhZeGPPOOUfLtI3pAN8fVSyM%2B9NBMU7R46xyqJ0J8PSVpQZhhAHn03T%2B40rcNp26GXqauM9K%2BLwZRw%3D%3D",
    "imageWidth": 468,
    "imageHeight": 82
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`imageName`	string	`"cc85680f-a1d0-4627-89ff-7d7e53663a2b.png"`	Unique identifier for the generated barcode image file
`format`	string	`".png"`	File format of the barcode image output
`type`	string	`"CODE128"`	The barcode type that was generated
`expires`	number	`1766010012598`	Unix timestamp when the barcode download URL expires
`downloadURL`	string	`"https://storage.googleapis.com/apiverve/APIData/barcodegenerator/cc85680f-a1d0-4627-89ff-7d7e53663a2b.png?GoogleAccessId=635500398038-compu…`	Direct URL to download the generated barcode image
`imageWidth`	number	`468`	Width of the generated image in pixels
`imageHeight`	number	`82`	Height of the generated image in pixels

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 10 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	Barcode Generator calls	Per 1,000 calls
Free	Free	200	20	Free
Starter	$29.99	200,000	20,000	$1.50
Pro	$99.99	1,000,000	100,000	$1.00
Mega	$299.99	4,000,000	400,000	$0.75

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — POST /v1/barcodegenerator

No SDK to install — this is a plain HTTPS call to /v1/barcodegenerator with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

1
2

curl "https://api.apiverve.com/v1/barcodegenerator" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/barcodegenerator-apiSource, issues and the examples this page is built from.ReferenceBarcode Generator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/barcodegeneratornpm apiverve-barcodegeneratorPyPI APIVerve.API.BarcodeGeneratorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — POST /v1/barcodegenerator

Install the Node.js SDK, then call the Barcode Generator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/barcodegenerator

Node.js

const res = await fetch("https://api.apiverve.com/v1/barcodegenerator", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/barcodegeneratorThe published Node.js client, versioned and signed.GitHubapiverve/barcodegenerator-apiSource, issues and the examples this page is built from.ReferenceBarcode Generator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

apiverve-barcodegeneratorPyPI APIVerve.API.BarcodeGeneratorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — POST /v1/barcodegenerator

Install the Python SDK, then call the Barcode Generator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — PyPI

pip install apiverve-barcodegenerator

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/barcodegenerator",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

PyPIapiverve-barcodegeneratorThe published Python client, versioned and signed.GitHubapiverve/barcodegenerator-apiSource, issues and the examples this page is built from.ReferenceBarcode Generator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/barcodegeneratornpm APIVerve.API.BarcodeGeneratorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — POST /v1/barcodegenerator

Install the C# / .NET SDK, then call the Barcode Generator API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.BarcodeGenerator

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/barcodegenerator");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.BarcodeGeneratorThe published C# / .NET client, versioned and signed.GitHubapiverve/barcodegenerator-apiSource, issues and the examples this page is built from.ReferenceBarcode Generator API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/barcodegeneratornpm apiverve-barcodegeneratorPyPI

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — POST /v1/barcodegenerator

No SDK to install — this is a plain HTTPS call to /v1/barcodegenerator with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/barcodegenerator", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/barcodegeneratornpm apiverve-barcodegeneratorPyPI APIVerve.API.BarcodeGeneratorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — POST /v1/barcodegenerator

No SDK to install — this is a plain HTTPS call to /v1/barcodegenerator with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/barcodegenerator");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/barcodegeneratornpm apiverve-barcodegeneratorPyPI APIVerve.API.BarcodeGeneratorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — POST /v1/barcodegenerator

No SDK to install — this is a plain HTTPS call to /v1/barcodegenerator with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/barcodegenerator")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/barcodegeneratornpm apiverve-barcodegeneratorPyPI APIVerve.API.BarcodeGeneratorNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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Barcode Generator API

Try it — live request, no key required

Start from a template — a working app you can deploy in a minute

Barcode Generator

About the Barcode Generator API

What people use it for

Without writing code

Ways to call it

Other ways to use Barcode Generator

Questions.

Request parameters — POST /v1/barcodegenerator

Required

Optional

Authentication

Response — POST /v1/barcodegenerator

Response fields

Response headers

Errors

What a call costs — 10 credits per call

Call it from cURL — POST /v1/barcodegenerator

Resources

Also published for

Call it from Node.js — POST /v1/barcodegenerator

Resources

Also published for

Call it from Python — POST /v1/barcodegenerator

Resources

Also published for

Call it from C# / .NET — POST /v1/barcodegenerator

Resources

Also published for

Call it from Go — POST /v1/barcodegenerator

Resources

Also published for

Call it from PHP — POST /v1/barcodegenerator

Resources

Also published for

Call it from Ruby — POST /v1/barcodegenerator

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Barcode Generator API

Data Generation

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