Barcode Generator: Create Barcodes Online | Free Tool

A Yes, the generated barcodes are free to use for any purpose including commercial use.

A It depends on the format. Code 128 supports any length, while EAN-13 requires exactly 13 digits.

A Yes.

A To ensure your generated barcode is scannable, always download the high-resolution PNG image directly from our tool. Avoid significant resizing, especially shrinking, which can lead to blurriness. Maintain excellent contrast between the dark bars and light background. Crucially, ensure there are clear 'quiet zones' – ample white space – on both sides of the barcode. A quick test with a smartphone barcode scanner app can confirm its readability before printing or deployment.

A Yes, you can generate ISBN barcodes using the EAN-13 format within our tool. ISBNs for books published after January 2007 are 13 digits and compatible with EAN-13. Simply input your 13-digit ISBN (excluding hyphens) into the EAN-13 generator. Ensure you include the correct 978 or 979 prefix. Always verify the generated barcode with a scanner before printing to ensure accuracy for your publication.

A If you enter too many characters, the generator will usually truncate the input to fit the specific barcode's requirements. For example, an EAN-13 format only allows 13 digits; any additional numbers you type will be ignored. It's best to double-check your data before generating to avoid unexpected results.

A No, you can't change the bar colors in this generator. Barcode scanners rely on high contrast between dark bars and a white background. Colored or gradient bars often fail to scan properly. Stick with black bars on a white background for reliable results. If you're preparing barcodes for a print brochure, test a sample with your printer first to confirm the contrast holds up.

A Screenshots compress image data, which can ruin barcode readability. A screenshot from a standard monitor delivers about 72 DPI, while a usable barcode for print needs at least 300 DPI. Our PNG download preserves full resolution and sharp edges. I've seen teachers try screenshots for classroom handouts, and the barcodes fail to scan nine times out of ten. Just hit the download button.

A No, this tool runs entirely in your browser and needs an internet connection. The barcode encoding logic loads from our server each time you visit. I'd suggest bookmarking the page if you use it regularly. For offline work, generate and download your PNGs ahead of time. A quick tip: save a batch of common barcodes to a folder so you're never stuck without one.

A You can scale up safely, but never scale down below 100% of the original export. A barcode needs crisp bar widths — shrinking smears those edges together. For a product label at 2 inches wide, generate the PNG and then enlarge it in your design software by up to 300%. If you need a tiny barcode for a jewelry tag, regenerate a smaller size directly from the tool instead of squishing the image. Vector files aren't available here, so plan your physical dimensions before you hit download.