Support
Frequently Asked Questions
Every question we get, organized by what you’re actually trying to do — not one long undifferentiated list.
General
Yes — 100% free with no sign-up, no scan limits and no expiry. Every code carries our lifetime guarantee: it keeps working as long as your destination URL is live.
We generate static QR codes — the URL is encoded directly in the pattern itself, not stored on a redirect server. That means there is no subscription to lapse and no service to shut down. The code you download today will scan exactly the same in ten years.
Absolutely — that's what QRSen is built for. Use them on business cards, packaging, signage, menus, brochures, anything. No attribution required.
No. All encoding happens in your browser via JavaScript. Your URL never leaves your device and is never sent to our servers.
No account, no email, no login. Open the generator and start creating — that's the entire signup process.
Using the Generator
SVG (infinitely scalable vector), PNG (2048 × 2048 crisp raster) and JPG (compressed photo). SVG is best for print and Illustrator; PNG/JPG for web and slides.
It shouldn't be — we rasterise from a clean SVG at 2048 × 2048, which is print-sharp. If you see blur, re-download as SVG, which scales infinitely with zero quality loss.
At least 2 × 2 cm (about 0.8 × 0.8 inches) for short URLs. Use SVG for print and keep enough white quiet zone around the code.
Error correction level H (approximately 30%). A printed code can lose up to a third of its surface area to scratches or ink bleed and still scan reliably.
Yes — nothing is saved server-side, so just come back, re-enter the same URL, pick a new color or dot style, and download again. The old file keeps working too; it's just a different-looking code pointing at the same link.
Portfolios & Resumes
Yes, if it links somewhere worth visiting — a portfolio site, case studies, or a live project. Skip it if it just links to your LinkedIn profile a recruiter could find in two clicks anyway.
Your best single destination: a personal site or a curated case-study page, not your homepage if that homepage is thin. One strong link beats a QR code that dumps someone on a generic landing page.
Not if it's small, on-brand, and placed deliberately — a corner of the back of the card works well. It looks unprofessional when it's oversized, off-color, or dominates the layout.
Yes, as long as they all point to the same destination. That's the advantage of a static code — one file, reused anywhere, with nothing to keep in sync.
Small Business & Restaurants
No — if every table's menu is the same, one QR code works for all of them. Only generate a second code if a location or table genuinely links somewhere different (e.g. a location-specific ordering page).
Yes, if the QR code links to a page you control and can update — like your website's menu page. Update the page whenever the menu changes; the printed QR code and its physical menu insert never need to be reprinted.
At least 2.5–3 cm (roughly 1 inch) square for a table tent viewed from arm's length. Bigger is safer in dim restaurant lighting — err on the larger side rather than shrinking it to fit.
Any modern iPhone or Android camera scans a standard QR code natively — no app download required. This has been true since iOS 11 and Android 9, which covers effectively all phones in active use.
Usually, if the code is simple (short URL, high error correction) and printed at a reasonable size. Thermal printers can blur fine detail, so avoid tiny codes and test-scan a sample before printing a full batch.
Printing Companies
Almost always one of three things: the file was upscaled from a low-resolution raster (blurring the fine modules), the print process shifted colors so contrast dropped below scannable levels, or the quiet zone (white margin) got cropped during layout. Vector SVG input avoids the first cause entirely.
Aim for as close to pure black-on-white as your brand allows. Once you move to mid-tone colors on a busy or textured background, scanners start to struggle — especially under uneven print-shop lighting during a scan.
Usually not, as long as the coating is applied evenly and doesn't introduce heavy glare. Glossy laminate under harsh overhead lighting can occasionally cause glare-related scan failures — matte finishes are the safer default for anything scanned outdoors or under bright store lighting.
SVG, always, for anything going to a printer. It's resolution-independent, so it prints correctly whether it ends up at 2 cm on a label or 2 metres on a banner — no re-export needed at each size.
Yes, down to about 1.5–2 cm, provided the source is vector and the error correction level is high. Below that, the individual modules become smaller than most printers and most phone cameras can reliably resolve.
Weddings
Not if it's sized modestly and matches your color palette rather than defaulting to plain black. A QR code in your accent color, placed in a corner or on a separate insert card, reads as a deliberate design choice rather than an afterthought.
Your RSVP form or wedding website — pick one primary destination rather than trying to cram multiple links behind a single code. If you need both, link to a wedding website that itself links out to registry, RSVP and details.
Yes — a QR code should be an added convenience, not the only path. Keep a phone number or a short written URL on the invitation as a fallback for guests who prefer to call or type a link by hand.
A separate insert (common for RSVP details) keeps the main invitation design clean and gives the code more room to be sized properly. Either works — just make sure whichever card holds it doesn't get folded or cropped in a way that cuts into the quiet zone.
Only if both link to the same destination, like a single wedding website that gets updated over time. If the save-the-date needs to link somewhere different from the final invitation, generate a second code — it costs nothing and avoids confusing early responders.
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