Barcode Generator (Code 39)
Generate Code 39 barcodes from text or numbers and download them as SVG. Fast, private, and fully client-side.
Runs in your browser — nothing uploaded
Letters are uppercased automatically. Allowed: A–Z, 0–9, space, and - . $ / + %.
Barcode
Generate a Code 39 barcode from any text or number and download it as a crisp, scalable SVG. Great for asset tags, inventory labels, ID cards, and warehouse stickers — it renders instantly in your browser and works with virtually every barcode scanner.
Private by design — your data never leaves your device
How to use it
No account, no upload — it all happens on your device.
1
Type the text or number you want to encode.
2
The Code 39 barcode renders instantly below.
3
Fix any flagged characters if needed.
4
Click Download SVG to save a crisp, scalable barcode.
Why SVG output
Scalable, print-ready, and tiny.
| Benefit | What it means |
|---|---|
| Infinitely scalable | Sharp at any label size, from sticker to poster. |
| Print-friendly | Vector edges stay crisp on any printer. |
| Small files | A barcode is just a handful of rectangles. |
Tips for scannable barcodes
- Keep the quiet zone.Leave white space around the barcode when you place it — the exported SVG already includes a margin, so don't crop it tight.
- Don't stretch vertically only. Scale the SVG proportionally so the bar widths stay correct.
- Test with your scanner. Code 39 is widely supported, but always scan a printed sample before mass-printing labels.
Frequently asked
What is Code 39?
Code 39 is a widely supported barcode format that encodes uppercase letters, digits, and a few symbols. It's common for asset tags, ID badges, inventory, and internal labels because nearly every barcode scanner reads it without special configuration.
Which characters can I encode?
Uppercase A–Z, digits 0–9, a space, and the symbols - . $ / + %. Lowercase letters are converted to uppercase automatically. Anything outside that set is flagged so you can fix it.
Is the barcode generated on a server?
No. The barcode is drawn as an SVG entirely in your browser, and the download is built locally. Your text never leaves your device.