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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.

Colors & Styles

Yes — pick any color for the dots and, separately, for the background. The only rule that actually matters for scanning is contrast: dark dots on a light background (or the reverse) work reliably, while two similar-toned colors can fail to scan even if they look fine on a screen.
"Round" and "minimalist" usually mean rounded or dot-shaped modules instead of hard squares — this generator's Rounded and Extra-Rounded dot styles cover that. "Circular" sometimes means the whole code trimmed into a circle frame, which isn't standard QR (most scanners expect a square symbol) — we'd recommend rounded modules over a circular crop for reliability.
Yes, for SVG and PNG exports — toggle Transparent under Background and the file has no background fill at all, ready to sit on top of another design. JPEG can't support transparency (no alpha channel in the format), so JPEG exports always get a white background regardless of the toggle.
It can, if the contrast between dots and background gets too low. Stick to a clearly dark-on-light or light-on-dark pairing and test-scan before printing or publishing — the same rule that applies to color choice generally.
Just the fill behind the dots — it's independent from the dot color itself. You can pair any background with any dot color; the tool doesn't restrict combinations, only physical scanning does.

Link in Bio

Yes — creating a free QRSen account includes a public profile page at qrsen.com/u/yourname with up to 8 custom links, social icons, a bio, and its own matching QR code. No paid tier required for any of it.
The main generator encodes one link per code — perfect when you already know the single destination. A link-in-bio page is for when you want one link (or one QR code) to lead somewhere that itself offers several destinations: your shop, your socials, your latest post, your contact form, all in one place.
Not currently — your page lives at qrsen.com/u/yourname. If you need a fully custom domain for a bio page, that's outside what this feature covers today.
No — your dashboard gives you one QR code that always points at your profile URL. Update your links, bio or socials any time and the same printed or shared QR code keeps working, since it's your page's content that changed, not its address.
Up to 8 custom links, plus dedicated icon slots for Website, LinkedIn, X, GitHub and Truth Social. That's enough for most people without turning the page into a cluttered list.
Not currently — it's a small text link at the bottom of every free profile page, similar to how most free link-in-bio tools work.

Dynamic QR Codes

A normal QR code has your destination baked directly into its pattern — change the destination, and the code itself has to change, which means reprinting. A dynamic QR code instead encodes a short, permanent link on qrsen.com (like qrsen.com/r/abc123); that link looks up your current destination from your dashboard on every single scan. Update the destination in your dashboard and the same printed code — the one already on your menu, sign, or packaging — instantly starts sending people to the new place.
Yes — that's the entire point. The printed image never encodes your destination directly, only the stable qrsen.com/r/ link. Reprint nothing: change the URL in your dashboard and every copy already handed out, posted, or printed keeps working, just pointed somewhere new.
There's a brief redirect through qrsen.com/r/... before landing on your destination — visually instant on any modern phone, and standard behavior for how dynamic/trackable QR codes work generally. Once it lands, the visitor is on your actual site or page, same as if they'd typed the URL themselves.
Free accounts get 3 active dynamic QR codes — enough to try it on a menu, a storefront sign, and a piece of packaging. Starter includes 25, and Pro includes 200. See /pricing for current plan details.
Yes — each code's dashboard card shows a running scan count and the date it was last scanned, and pausing or deleting a code takes effect immediately across every printed copy.
A paused code shows a friendly "not active right now" page instead of redirecting — nothing broken-looking, no dead link, and it can be resumed anytime. Deleting a code is permanent: anyone scanning an already-printed copy afterward will see that same not-active page with no way to bring the old destination back.
No — the free generator encodes your destination directly and needs no account; it's permanent and correct forever but can't be changed once printed. Dynamic QR codes are a separate, account-based feature specifically for when you need to change the destination later without touching what's already printed.

Chrome Extension

Yes — every feature in the extension (all 4 dot styles, all 6 preset colors plus a custom color picker, transparent backgrounds, PNG/SVG download, right-click generation) is free with no sign-up, no account, and no scan limits.
No. Every QR code is generated locally in your browser using the same open-source engine as qrsen.com's own generator. Nothing you type is sent to our servers or anyone else's — see the full privacy policy at qrsen.com/extension/privacy.
Just three: activeTab (to read the current tab's address when you open the popup), contextMenus (for the right-click "Generate QR code" options), and storage (to remember your last-used color and style locally on your device). No host permissions, no browsing-history access.
Yes — right-click any link and choose "Generate QR code for this link," or select text on a page and choose "Generate QR code for this selection." Right-clicking empty space on a page generates one for that page's URL.
The extension is a fast, one-click version of the same generator for quick jobs. The website adds logo embedding, vector PDF export, and saved history in a free account — the popup has an "Open full editor" link that carries your text over if you need those.
Any Chromium-based browser that supports Manifest V3 extensions — Chrome, Edge, Brave, and Opera all work from the same package.

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