SimpleToolsHub

Free Online Barcode Generator

Generate barcodes instantly in your browser with no software needed. Free, secure, and easy to use. Supports Code 128, EAN, UPC, and more. Perfect for labeling, inventory, and retail.

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Barcode Generator FAQ

How do I get sharp prints? What DPI should I use?Use 300–600 DPI for printing. Choose “Inches” and set the exact label size; PNG/PDF will render at inches × DPI. SVG is resolution‑independent for vector workflows.
Why does my PDF come out portrait when my size is landscape?The tool auto‑sets landscape for custom sizes when width ≥ height. For A‑sizes/Letter, pick a landscape‑oriented custom size (e.g., 4×6) if you need wide labels.
Which barcode types are supported?Code 128 (A/B/C), EAN‑13, EAN‑8, UPC‑A, Code 39, ITF, MSI, Pharmacode. Input rules (like digits‑only or even‑length) are validated before rendering.
PNG vs. SVG vs. PDF — which should I pick?SVG for vector design apps, PNG for quick image use, PDF for label printers and page‑accurate output. All formats honor your size and DPI settings here.
Scanners can’t read my barcode — what should I change?Increase physical width (quiet zone), use higher DPI, avoid very small text, and prefer black on white. Try Code 128 if your content is mixed characters.
Is this private?Yes. Everything runs in your browser; no data is uploaded or stored on our servers.
Related tools that help with labels and exportsTry our Free QR Code Generator for QR labels, and Image Format Converter to batch‑convert outputs (PNG ⇆ JPG/WebP, etc.). Both are browser‑only and respect your privacy.