Generators / Barcode Generator

Barcode Generator

Free online Barcode Generator — fast, no install, runs in your browser. Part of the I5P toolbox.

Barcode content

Each symbology accepts different input — see the reference below

Symbology

Module width (px)

Barcode height (px)

Foreground

Background

Quiet zone (modules)

Text size

Show human-readable text

Reference URL (data is the barcode content, required)

Supported symbologies

Character set	Length	Typical use
Printable ASCII	Any length	Logistics, warehousing, general IDs
Digits	12 or 13 digits (check digit auto)	Retail products worldwide
Digits	7 or 8 digits	Small retail packages
Digits	11 or 12 digits	Retail in North America
Digits, A–Z, - . space $ / + %	Any length	Industrial, defense, asset tags
Digits	Even count (auto-padded)	Cartons and shipping cases
Digits and - $ : / . +, A–D as start/stop	Any length	Blood banks, libraries, couriers

Free API

A GET request returns the barcode directly as an image/png image, ready for an <img> tag or server-side use. Anonymous calls are rate limited.

Endpoint: //www.i5p.com/bar/?data=...&type=code128

Parameter	Description	Required
data	Barcode content (URL-encoded)	Required
type	Symbology: `code128 / ean13 / ean8 / upca / code39 / itf / codabar`. Default code128	Optional
w	Module width in pixels, 1–8, default 2	Optional
h	Barcode height in pixels, 20–400, default 100	Optional
fg	Foreground color, e.g. `%23000000` (escape # as %23)	Optional
bg	Background color, e.g. `%23ffffff`	Optional
text	`1` shows the readable text (default), `0` hides it	Optional
margin	Quiet zone in modules, 0–40, default 10	Optional
format	`png` (default, returns the image) or `base64` (returns a JSON data URI)	Optional

Examples:

<!-- CODE128 product code -->
<img src="//www.i5p.com/bar/?data=I5P-20260909">

<!-- EAN-13 retail barcode, taller and wider -->
<img src="//www.i5p.com/bar/?data=6901234567892&type=ean13&w=3&h=140">

Note: for EAN-13 / EAN-8 / UPC-A you may supply just the first 12 / 7 / 11 digits — the check digit is appended automatically. ITF pads a leading zero when the digit count is odd.