A poster QR code must work at its final printed size and lead somewhere useful for as long as the poster is displayed. QR Code Generator creates a static pattern containing the text or address you enter. It adds no redirect service or scan analytics.
Settle the destination first
Choose Text or a web address and enter the final link. A stable short address you control can redirect to a changing destination, but that redirect is something you must maintain separately. The printed pattern itself cannot be edited later.
If you need campaign labels, build and test the URL with UTM Builder first. A long address makes a denser code. Avoid private details in its parameters, and check that redirects retain the campaign values you need.
Preserve the border and contrast
Use a four-module quiet zone on all sides, as specified in DENSO WAVE's code-area guidance. A module is one small square in the pattern. Keep that border clear of captions, photographs, logos and trim edges. The generator permits a smaller border, but an allowed export is not evidence of reliable scanning.
Dark modules on a plain light background are a useful starting point. A text contrast score can flag a weak color pair, but it cannot certify QR scanning. Paper, ink, glare and the camera also affect the result. Avoid covering part of the pattern with a logo; this generator has no logo-overlay feature.
Pick the output for the layout
PNG is a fixed raster image; SVG describes scalable shapes. Use the format your layout application or printer can handle without blurring the modules. Enlarging a small PNG can soften edges. SVG avoids that raster enlargement, but the physical modules must still be large enough for the intended scan distance.
The image-size field accepts 64 to 2,048 pixels. It does not set centimetres or inches on paper. The generator also checks that the selected pixel size can contain the module grid and border. Passing that check only establishes drawing room, not print readability.
Use error correction without covering the code
Low, Medium, Quartile and High add progressively more correction data. The approximate 7%, 15%, 25% and 30% restoration figures concern codewords, not a safe percentage of the picture to obscure. DENSO WAVE explains this distinction.
Higher correction can make the pattern denser. The tool's UTF-8 payload limits are 2,953, 2,331, 1,663 and 1,273 bytes respectively. You do not need to fill that capacity: a short, dependable destination is easier to fit into clear artwork.
Rehearse the actual poster
For a hypothetical café menu poster, generate the menu link, place the code at the intended physical size and add a clear label such as “Scan for the menu.” Include a readable web address for someone who cannot scan it.
Print a test copy on comparable stock. Scan it with more than one phone at the expected distance and lighting, including through any protective cover. Confirm both scanning and the destination page. If it fails, adjust size, sharpness, contrast or clear space, then print and test again.
Keep the exported code with the artwork and final destination address. Recheck the link before reprinting or displaying an old poster. A code that still scans can still lead to a retired page.