Online Barcode Generator: Code128, EAN, UPC, ITF-14, PDF417, Data Matrix

• Multi-format generation

  Covers common retail, logistics, warehouse, and asset-management barcode standards.

• Input validation

  Includes EAN/UPC/ITF-14 length and check-digit guidance to reduce invalid output.

• Export tuning

  Adjust scale, spacing, height, and text before downloading PNG/SVG/JPG.

• Local processing

  Everything runs in-browser, suitable for privacy-sensitive workflows.

• Zoomed preview checks

  Open enlarged preview to inspect module edges, quiet zone spacing, and text readability before export.

• Preset-driven consistency

  Quick presets help teams generate labels with repeatable, standardized output settings.

1. 1

   Enter the code value and decide whether your use case is retail, logistics, internal ID, or high-capacity payload.

2. 2

   Choose the symbology that matches the business rule (EAN/UPC for retail, ITF-14 for cartons, Code128 for internal IDs, 2D formats for dense data).

3. 3

   Resolve validation hints first, especially length and check-digit errors in EAN/UPC/ITF-14 formats.

4. 4

   Tune export settings (scale, height, padding, text, colors, background) according to your real output medium.

5. 5

   Open zoom preview for final inspection, then export PNG/SVG/JPG and verify with actual scanner devices.

• Format-specific constraints reduce invalid barcodes before export
• Check-digit guidance helps fix EAN/UPC/ITF-14 errors quickly
• One page supports both 1D and 2D formats for cross-workflow use
• Quick presets accelerate label and print setup for recurring tasks
• Preview and export stay together so errors, output size, and download actions are visible while tuning settings
• Fine control over bar/text colors, alignment, spacing, and background
• Zoom preview helps catch readability issues before production
• Fully local processing keeps sensitive payloads in-browser

• Retail products

  Generate EAN/UPC for shelf and distribution workflows.

• Logistics cartons

  Use ITF-14 and I2of5 for carton-level handling and routing.

• Asset tags

  Use Code128/Code39 for equipment and inventory IDs.

• Documents and tickets

  Use PDF417/Data Matrix for denser encoded payloads.

• Book publishing

  Use ISBN-compatible EAN-13 values for cataloging and POS compatibility.

• Manufacturing traceability

  Use Data Matrix for part-level lot tracking and production handoff steps.

• Warehouse pick labels

  Generate consistent labels with stable spacing for long-term scanner reliability.

• Integration testing

  Create multi-format sample codes quickly to validate scanner and backend compatibility.

• Prefer SVG for print workflows
• Use dark bars on light background
• Keep enough quiet zone
• Validate with multiple scanners before release
• Use standards-compliant input length for retail symbologies to avoid check-digit errors
• Keep scale/height/padding consistent for each label batch
• For long content, prefer 2D formats to avoid dense 1D bars
• Use non-transparent backgrounds on complex print surfaces when contrast is uncertain

For longer URLs, contact details, Wi-Fi payloads, or general scannable text, use the QR Code Generator tool. If the content contains query parameters, callback URLs, or non-ASCII link text, clean it first with the URL Encode & Decode tool. For text that needs to move between API fields, embeds, or encoded payloads, pair this workflow with Base64 Encode & Decode .

• Scanner implementations vary across devices and systems
• Manual code edits may break check digits
• Very long data may be better suited for 2D formats
• Even valid symbology can fail with low contrast or reflective material
• PNG may degrade in very small print sizes; prefer SVG for precision output
• Optimal settings differ between 1D and 2D symbologies; tune separately
• A barcode being syntactically valid does not guarantee compliance with downstream business rules
• Barcode itself is not encryption; avoid embedding sensitive raw values directly