AxelBase

Generate Barcodes

Professional EAN-13 & UPC-A standards

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GS1 Compliant • Works Offline • SVG + PNG + Clipboard

About AxelBase

AxelBase is a secure, client-side barcode generator designed for speed and privacy.

Unlike other generators that send your data to a server, AxelBase runs entirely in your browser.

AxelBase is a modern, privacy-first barcode generation tool built for creators, retailers, developers, and anyone who needs reliable EAN-13 or UPC-A barcodes without friction. Unlike traditional barcode generators—which often rely on remote servers, involve login walls, or hide basic features behind paid tiers—AxelBase is engineered to run entirely inside your browser. No servers, no data collection, no analytics. The moment the page loads, everything you see happens locally on your device, making AxelBase both fast and exceptionally secure.

At its core, AxelBase was designed around two principles: accuracy and trustworthiness. Barcodes must comply with GS1 standards to function correctly in retail scanning systems, inventory workflows, and fulfillment pipelines. That means check digits must be computed precisely, the structure must match ISO/IEC 15420 specifications, and the rendering must adhere to strict spacing, quiet zones, and guard bar guidelines. AxelBase follows these requirements to the letter, powered by the widely respected bwip-js engine—an industrial-strength generator used globally across thousands of applications. Every barcode produced is mathematically validated, properly encoded, and rendered at print-quality sharpness.

Another central goal of AxelBase is maintainability and transparency. The entire project is open source, written in clean TypeScript and built on SvelteKit with static prerendering. That means the site runs blazing fast and requires no backend infrastructure. It also means you can host it anywhere—including GitHub Pages—without worrying about load balancing, runtime servers, or API quotas. The design works seamlessly whether AxelBase is deployed at a domain root or inside a subfolder, making it suitable for hobby projects, enterprise internal tools, educational environments, and lightweight POS workflows.

AxelBase also aims to be approachable for anyone, not just developers. The interface is intentionally clean, with no clutter or unnecessary steps. You type your digits, and the barcode appears instantly—with a built-in 300 ms debounce to give a smooth, responsive feel. If you choose to enable the auto-check-digit option, AxelBase ensures your barcode is always valid, automatically recalculating the final digit when you enter an 11-, 12-, or even incorrect 13-digit code. This prevents one of the most common mistakes in barcode creation: mismatched or invalid check digits that otherwise cause scanning failures.

For creators, AxelBase provides multiple export modes: SVG for perfect vector graphics and PNG for printing, packaging, or product documentation. The PNG output is generated entirely client-side using the native Canvas API, allowing you to download crisp images or copy them directly to your clipboard for use in design software or spreadsheets. There are no watermarks, no compression, and no enforced templates—just clean, standards-compliant barcodes ready for real-world use.

With AxelBase, the philosophy is simple: give users a professional-grade barcode generator that respects privacy, adheres to global standards, and feels effortless to use. Whether you're preparing labels, prototyping products, teaching GS1 concepts, or integrating the tool into a workflow, AxelBase offers a fast, frictionless, and dependable experience.

How to Use

  1. Enter your 11, 12, or 13 digit product code.
  2. Let the auto-calculate feature ensure your check digit is valid.
  3. Click "Download PNG" for images or "Download SVG" for vector graphics.

Using AxelBase is intentionally simple, because generating a valid EAN-13 or UPC-A barcode should never require specialized software or technical expertise. Every feature was designed to guide you smoothly from raw digits to a fully compliant barcode ready for printing, downloading, or embedding into your workflow.

Begin by typing your numeric code into the input field. AxelBase accepts 11-, 12-, or 13-digit numbers depending on your scenario. Eleven digits typically represent UPC-A codes without their check digit. Twelve digits are full UPC-A codes. Thirteen digits are EAN-13 codes commonly used internationally. AxelBase filters out all non-numeric characters, allowing you to paste values from spreadsheets, documents, or emails with no cleanup required.

The auto-check-digit feature is enabled by default and recommended for general use. When active, AxelBase computes the GS1 check digit automatically. Enter 11, 12, or even 13 digits with a wrong check digit, and AxelBase corrects it instantly, ensuring compliance and preventing scanning issues. For users who prefer manual validation or are learning GS1 rules, auto-check can be disabled, prompting AxelBase to validate the final digit and show errors when needed.

As you type, the barcode updates live with a smooth 300 ms debounce. The generator uses strict GS1 and ISO/IEC encoding rules to ensure correct guard bars, digit placement, and quiet zones. This live preview matches the exact barcode you will download or print.

Once satisfied, you can export your barcode in multiple formats. SVG is ideal for design and printing workflows, offering perfect scalability for product packaging, documentation, and professional layouts. PNG exports provide crisp raster images suitable for everyday printing, spreadsheets, or software that requires bitmap graphics. The clipboard feature enables you to paste PNG output directly into applications without downloading a file.

Because AxelBase runs entirely in your browser and adheres strictly to GS1 specifications, the barcodes you generate are suitable for retail use, logistics operations, digital catalogs, and product labeling across global markets.

Frequently Asked Questions

AxelBase is open source and free for personal, educational, and commercial use. You may generate unlimited barcodes without fees, registration, or restrictions. Every computation happens locally, and the permissive nature of the project makes it ideal for businesses, creators, and production environments.

Yes. AxelBase only requires an internet connection for the initial load. After that, all barcode generation—including check digit computation, SVG rendering, PNG export, and clipboard functionality—occurs 100% on your device using static JavaScript files. You can safely use AxelBase in offline warehouses, secure facilities, schools, and remote locations.

Yes. AxelBase follows GS1 General Specifications and ISO/IEC 15420 standards. Check digits are computed using the official weighting algorithm, and bar structures match required encoding patterns, guard bars, and quiet zones. Barcodes generated here work with retail scanners, warehouse systems, POS terminals, and automated fulfillment equipment.

No. AxelBase is fully client-side. Your input, generated barcodes, and exported graphics never leave your browser. There is no server, no analytics, no data capture, and no external API calls. Everything stays entirely on your device for maximum privacy and security.

Correct check digits are essential for retail and logistics scanning. Auto-correction ensures your barcode is always valid—even if you mistype the last digit. AxelBase recalculates check digits for 11-, 12-, and even 13-digit inputs to prevent invalid codes that would otherwise fail to scan or cause issues downstream.

Yes. The barcodes generated by AxelBase are fully GS1 compliant. As long as the printed image maintains proper size, contrast, and quiet zones, they will scan reliably on laser scanners, imaging scanners, smartphone readers, and checkout terminals used throughout the retail and logistics industries.