Bulk Barcode Generator

No. Every barcode is generated entirely in your browser and the values you enter are never sent to or stored on a server. Your value list and settings like format and size are saved only in this browser, though, so they carry over next time you open the page.

Add "|" or a tab after the value, then the label (e.g. 880123456701 | Apple juice 500ml). Turn on the "Label" toggle under Show to display it under each barcode — it carries over into the sheet and print output too.

Values that don't match the format show up in an error list above the preview, with the line number, the value, and a specific reason (e.g. "13 digits required, currently 14"). Values with a simple fix — an extra check digit, or lowercase letters — get a "→" button to correct them instantly, and "Remove N invalid" clears the rest from the list in one click. Downloads and printing only ever include valid values.

Right now one format applies to the whole list. If you need barcodes in different formats, switch the format and export separately for each one.

PNG at 3x resolution is convenient when you'll use a fixed size right away, like printed labels. JPG at the same resolution is a smaller-file alternative when you don't need PNG's lossless output. SVG is lossless and better if you'll resize it later in a design tool. Pick the "label sheet" if you want everything laid out exactly as shown, in one PNG ready to print or share. Pick the CSV if you just need the values and labels as a table for another program.