Download Formats and Printing
PNG, SVG, PDF, WEBP and JPEG compared, the 12-sticker PDF sheet, and print-size and quiet-zone guidance.
UNI-QR offers five download formats, a size slider from 100 to 3000px, a quiet-zone (margin) slider from 0 to 10, and two PDF layouts. Which one to pick depends on where the code is going.
Format comparison
| Format | Best for | Notes |
|---|---|---|
| SVG | Printing at any size, professional design tools | Vector - stays crisp from a business card to a billboard |
| PDF (Single - A4) | A full-page printable sheet | One code per page, ready to print or send as a document |
| PDF (Sticker sheet - 12 per A4) | Batches of small stickers or labels | 12 copies of the same code laid out for cutting |
| PNG | Web, documents, general printing | Raster, sized 100-3000px, supports a transparent background |
| JPEG | Photos, places a transparent background isn't needed | Raster, sized 100-3000px, smaller file size than PNG |
| WEBP | Modern web use | Smaller file size than PNG at a similar quality |
Choosing a size
UNI-QR's size slider covers 100 to 3000px for PNG and JPEG exports. As a rough physical guide drawn from UNI-QR's own per-type printing notes: a business-card vCard code works from about 2 to 2.5cm square, a payment code at a shop counter is easier to scan at 5 to 8cm, the same payment code on an invoice can be smaller at 2.5 to 3cm, and a WiFi code on a table card should be at least 3cm square. For anything you plan to resize later or print large, download the SVG instead of a fixed-pixel PNG.
Quiet zone (margin)
The quiet zone is the blank border UNI-QR leaves around the code so a scanner can tell where the pattern starts and ends. The margin slider runs from 0 to 10; cutting it too close to zero on a printed card can stop phone cameras from recognizing the code at all, especially with a busy background behind it, so keep a visible blank margin unless you have a specific reason to remove it.
The 12-sticker PDF sheet
Switching the PDF layout to "Sticker sheet - 12 per A4" lays out twelve copies of the current code on one A4 page, ready to print on sticker paper and cut apart - useful for labeling several products, tables or devices with the same code without downloading and arranging twelve files by hand. For a different code on every label, use the separate Bulk QR tool described in QR Code Types instead.
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