About the project
About Qrivio Barcode
Qrivio is a free barcode generator and technical reference site for developers, retailers, warehouse teams, and anyone who needs machine-readable symbols that match real symbology rules—not marketing filler.
Open the generatorWhat we build
The home-page tool draws supported symbols in your browser and lets you download PNG, JPG, or SVG. Alongside it, topic guides explain digit structure, check digits, quiet zones, batch sequencing, marketplace GTIN expectations, and print pitfalls.
Generator Create QR Code, Code 128, Code 39, ITF-14, MSI, EAN-13, EAN-8, UPC-A, and Pharmacode—up to ten linear symbols per sequential batch.
Reference library Deep pages on each symbology, retail vs warehouse IDs, Amazon listing notes, SVG QR prepress, and scan-failure diagnosis.
No account wall Generation does not require registration. Optional analytics and ads help keep the tools free; they do not change encoding rules.
Education, not number sales Drawing bars does not create a GS1 licence or GTIN. Commercial retail IDs must come from an authorized source.
Standards we cover
Guides focus on the families people actually print and scan. Each page separates symbol geometry from identifier ownership so you know what the tool can and cannot guarantee.
Retail POS
EAN-13, EAN-8, UPC-A, and GTIN concepts used at checkout worldwide.
Logistics
Code 128, Code 39, ITF-14 on cartons, and MSI shelf-style numeric strings.
Packaging line
Pharmacode for high-speed packaging verification—not GTIN serialization.
2D matrix
QR Code structure, error correction, quiet zones, and SVG print workflows.
How we write technical pages
Articles aim for non-thin coverage: encoding, validation, printing, scanning, and common failure modes. Examples and Modulo-10 walkthroughs follow widely documented GS1 methods where they apply.
| Topic | What you will find |
|---|---|
| Encoding | Character sets, modules, parity patterns, and symbol layout at a practical level |
| Validation | Check digits, checksums, and why wrong full GTINs are rejected instead of silently “fixed” |
| Printing | Quiet zones, magnification, contrast, substrates, SVG vs raster trade-offs |
| Scanning | Why codes fail in warehouses and POS, and what to test before a production run |
| Implementation | Retail, warehouse, logistics, and packaging workflows—with clear “do not confuse X with Y” notes |
Independence and accuracy
Qrivio Barcode is an independent project. It is not affiliated with, endorsed by, sponsored by, or operated by GS1, Amazon, or other retailers and marketplaces named in educational content. Product names, standards, and trademarks remain the property of their respective owners.
Requirements vary by retailer, marketplace, printer, and trading partner. For commercial or regulated use, verify against the current official specification that applies to your project.
The site may display advertising (including Google AdSense) to fund free tools. Ads do not change technical recommendations. See Cookie & Advertising Disclosure and Privacy Policy.
Corrections and feedback
Technical accuracy matters. If you find a factual mistake, outdated rule, generator bug, or broken page, include the URL, the section heading, what the page says today, and—when possible—a pointer to an official source or reproducible steps.