Barcode Generator: what this tool is for
Linear 1D barcodes remain the foundational standard for retail checkout point-of-sale systems, warehouse inventory tracking, logistics shipping labels, asset management, and library cataloging. Creating scannable, standardized barcodes quickly without specialized commercial software is essential for small businesses and developers.
Xorvian's Barcode Generator produces crisp, high-precision barcodes directly in your web browser across 6 major international standard symbologies: CODE128 (universal alphanumeric), CODE39 (robust industrial), EAN-13 (European retail 13-digit), EAN-8 (compact retail packaging), UPC (North American retail 12-digit), and ITF-14 (carton shipping containers).
Customize barcode bar width (1 to 5), bar height (50 to 200px), and toggle the human-readable text display beneath the bars. Built-in syntax validation ensures retail barcodes (EAN-13, EAN-8, UPC, ITF-14) conform strictly to digit length and checksum rules in real time.
Download clean PNG raster images or infinite-resolution vector SVG files for commercial printing — 100% private, client-side, watermark-free, and accessible without account registration.
No file stored
Nothing is saved on our servers, during or after processing.
Local processing
The computation runs in your browser whenever the technology allows it.
Instant result
No waiting and no export queue: the result appears live.
Free, no account
No sign-up, no daily limit and no intrusive ads.
What this tool gives you
6 Major Barcode Symbologies
Generate CODE128, CODE39, EAN-13, EAN-8, UPC, and ITF-14 formats matching international GS1 and ISO standards.
Built-in Checksum Calculation & Validation
Automatically validates and computes check digits for EAN and UPC retail barcodes to prevent scanner rejections at checkout.
Customizable Dimensions & Text Display
Adjust bar width, height (50–200px), and toggle human-readable text on or off with real-time visual preview.
PNG & Scalable Vector SVG Downloads
Export high-resolution PNG images for web/documents or crisp vector SVG assets for high-DPI thermal label printing and product packaging.
Standard 1D Barcode Formats (EAN-13, CODE128, UPC)
All barcode rendering executes in local browser memory using JavaScript. Product SKUs, serial numbers, and internal IDs are never sent to external servers.
Clean Watermark-Free Export
Every generated barcode is 100% watermark-free, suitable for commercial product labels and logistics operations.
Real-world examples
Overview of the 6 supported barcode symbologies and standard commercial applications:
How to use Barcode Generator
Enter Data or SKU Number
Input your numeric or alphanumeric string into the text field (e.g., 12 or 13 digits for UPC/EAN).
Select Barcode Symbology
Choose among the 6 formats in the dropdown: CODE128, CODE39, EAN-13, EAN-8, UPC, or ITF-14.
Adjust Dimensions & Display Options
Toggle 'Show value' and adjust the 'Bar width' (1–5) and 'Height' (50–200px) sliders to match your label specifications.
Download PNG or SVG
Click 'Download PNG' for standard image printing or 'Download SVG' for vector label designs.
Tips and mistakes to avoid
Use CODE128 for Custom Internal Serial Numbers
CODE128 supports letters, numbers, and symbols with high data density, making it the most versatile choice for internal warehouse and asset tracking.
Print in Vector SVG for Thermal Printers
Vector SVG ensures crisp, razor-sharp bar edges that thermal label printers (Zebra, Brother, Dymo) scan reliably without blurring.
Preserve the 'Quiet Zone' Margins
Always maintain clear white margins on the left and right sides of the barcode (the quiet zone) so optical laser scanners can distinguish the code from background artwork.
Avoid : Entering Letters in EAN or UPC Barcodes
EAN-13, EAN-8, UPC, and ITF-14 strictly require numeric digits (0–9); entering letters or symbols will trigger an invalid character error.
Avoid : Setting Bar Width Too Thin for Low-Resolution Printers
Setting width to 1 on a low-DPI thermal printer may cause scanner read failures; width 2 or 3 is recommended for reliable scanning.
Avoid : Inventing Unofficial Numbers for Commercial Retail
Commercial retail sales in physical stores require official GS1-registered GTIN numbers to guarantee worldwide uniqueness.
Frequently asked questions
Answers to the questions people ask about Barcode Generator.
Related tools
Tools people open right after this one.
Updated on August 2026. See all tools