barcoder.pro 1.0
Base URL: https://barcoder.pro
A free barcode and QR code API. Send one GET request, get an image back. Put the URL straight into an <img> tag, an email template, a label printer script, or curl.
- FreeNo API key, no account, no rate tiers.
- Zero loggingWe don't store the data you encode, your IP address, or anything else about your request.
- Nothing keptImages are generated in memory, sent to you, and discarded.
- No trackingThis page has no cookies, analytics, or third-party scripts.
Endpoints
GET/g/Any barcode or QR code, fully customisable
Generates a barcode in the symbology and image format you choose. Also accepts POST with the same parameters as form fields — useful when the data is too long for a URL.
Parameters
| Name | Description |
|---|---|
s required | Symbology (barcode type). See the list below. |
d required | The data to encode. URL-encode it. |
f | Image format: png (default), gif, jpeg or svg. |
w, h | Image width and height in pixels. By default the image is sized to fit the barcode. |
sf | Scale factor. Default 1 for linear barcodes, 4 for QR and Data Matrix. Use sx / sy to scale one axis only. |
p | Padding in pixels. Default 10 for linear barcodes, 0 for QR and Data Matrix. Per side: pt, pr, pb, pl (or pv / ph). |
bc | Background colour as hex without the #, e.g. FFF or FFFFFF. Default white. 4 or 8 digits add alpha (0FFF = transparent). |
cm | Bar / module colour. Default 000. |
cs | Space colour. Default transparent (shows the background). |
Text and matrix options
| Name | Description |
|---|---|
tc | Label text colour (linear barcodes). Default 000. |
ts | Label text size. PNG/GIF/JPEG: built-in font 1–5 (default 1). SVG: font size (default 10). |
th | Distance of the label from the bars. Default 10. |
tf | Label font family, SVG only. Default monospace. |
ms | Module shape for QR / Data Matrix: s square (default), r round, x X-shaped. |
md | Module density for QR / Data Matrix, 0–1. Default 1. |
wn, ww | Narrow and wide bar widths for Code 39, Codabar and ITF. Defaults 1 and 3. |
Symbologies (s)
| Value | Type |
|---|---|
qr | QR code. Error correction: qr-l (default), qr-m, qr-q, qr-h. |
dmtx | Data Matrix, square. dmtx-r rectangular. GS1: gs1-dmtx, gs1-dmtx-r. |
code-128 | Code 128, automatic subset. Force one with code-128a, code-128b, code-128c. |
ean-128 | GS1-128 (Code 128 with FNC1). |
ean-13 | EAN-13. Use * for the check digit to have it calculated, e.g. 501234567890*. |
ean-8 | EAN-8. |
upc-a, upc-e | UPC-A and UPC-E. * works for the check digit here too. |
code-39 | Code 39. code-39-ascii for full ASCII. |
code-93 | Code 93. code-93-ascii for full ASCII. |
codabar | Codabar. |
itf, itf-14 | Interleaved 2 of 5. |
Hyphens and case are ignored, so code-128, Code128 and CODE_128 are the same.
Examples
# QR code as SVG
https://barcoder.pro/g/?s=qr&d=https%3A%2F%2Fexample.com&f=svg
# Code 128 shipping label, double size
https://barcoder.pro/g/?s=code-128&d=PKG-00042&sf=2
# EAN-13 with the check digit calculated for you
https://barcoder.pro/g/?s=ean-13&d=501234567890*
# In HTML
<img src="https://barcoder.pro/g/?s=qr&d=Hello" alt="QR code">
# With curl
curl -o code.png "https://barcoder.pro/g/?s=code-128&d=PKG-00042"Responses
| Code | Description |
|---|---|
200 | The image, as image/png, image/gif, image/jpeg or image/svg+xml. |
200 (empty) | s or d is missing, or f is not a known format. An unknown s returns a blank image. |
Try it
GET/g2/Code 128 in one parameter, print resolution
The no-options endpoint. Pass your data, get a large Code 128 PNG — black bars on a transparent background — that stays sharp when scaled down onto a label or packing slip. No text is printed under the bars.
Parameters
| Name | Description |
|---|---|
d required | The data to encode. Any text Code 128 supports (ASCII). URL-encode it. |
Examples
https://barcoder.pro/g2/?d=PKG-00042
# The image is large — set the display size yourself
<img src="https://barcoder.pro/g2/?d=PKG-00042" width="300" alt="PKG-00042">
curl -o label.png "https://barcoder.pro/g2/?d=PKG-00042"Responses
| Code | Description |
|---|---|
200 | image/png, 300 pixels tall, 50 pixels per bar module. Sent with Cache-Control: no-store, so it is never cached. |
Try it
Which one should I use?
Use /g2/ if all you need is a Code 128 barcode and you never want to think about options. Use /g/ for everything else: QR codes, retail codes (EAN / UPC), SVG output, colours, sizing, and human-readable text under the bars.