QR codes bridge the physical and digital worlds: a sticker on a shop window becomes a menu, a business card becomes a contact save, a classroom poster becomes a WiFi login. A good QR code generator makes that bridge in seconds — no design software, no account, no watermarks.
This free QR code generator creates real, scannable QR codes entirely in your browser for links, plain text, WiFi credentials, email, phone numbers, and SMS. Customize the foreground and background colors, pick an error correction level, adjust the quiet zone, and choose PNG sizes from 256 to 1024 px, then download your code as a crisp image ready for print. Every QR code generator session is fully private — no signup, no watermarks, no tracking; your data never leaves your device.
QR Code Generator
Create real, scannable QR codes instantly — links, WiFi, email, phone, SMS. Custom colors, sizes, PNG download.
🔒 100% private — everything runs in your browser, nothing is uploaded.
How to Use the QR Code Generator
- Choose a content type — Link, Text, WiFi, Email, Phone, or SMS. Each tab shows exactly the fields that type needs.
- Enter your content. For a link, paste the full URL. For WiFi, enter the network name, password, and security type so guests join with one scan. For email, add an optional subject and prefilled message.
- Adjust the options. Pick an error correction level (Medium suits most uses), PNG size (512 px is crisp for print), quiet zone, and your brand colors.
- Preview the code. It renders instantly below the options, with the QR version, module count, and character count shown underneath.
- Download the PNG and use it on packaging, posters, business cards, receipts, or slides. Test-scan it with your phone before printing a large batch.
Features That Set This Tool Apart
- Real QR encoding, not a fake image — powered by an embedded, standards-compliant encoder (Project Nayuki’s qrcodegen, MIT licensed) that produces genuinely scannable codes.
- Six content types — URLs, plain text, WiFi credentials, email with subject/body, phone numbers, and SMS with prefilled messages.
- Custom colors — match the code to your brand while keeping enough contrast to scan reliably.
- Error correction control — from 7% to 30% damage tolerance, so codes still scan when printed small or slightly damaged.
- Multiple PNG sizes — 256 px for screens, 512 px for general print, 1024 px for large-format posters.
- Quiet zone control — the blank margin scanners need, adjustable from 1 to 4 modules.
- Copy the encoded text — grab the raw payload (e.g. the WiFi string) for reuse elsewhere.
- 100% private — encoding happens entirely in your browser; your URLs and WiFi passwords are never uploaded.
QR Code Types and When to Use Each
Link codes are the classic: scan to open a URL. Use them on packaging (link to manuals), restaurant tables (menus), real-estate signs (listings), and event posters (registration pages). Always use the full URL including the scheme, and prefer short, stable links — a code printed on 1,000 flyers cannot be edited later.
WiFi codes are the highest-value type for physical spaces. Cafés, offices, salons, and waiting rooms can print one code that connects guests without anyone typing a 20-character password or asking staff. The code encodes the SSID, security type, and password in a standard format every modern phone understands.
Email, phone, and SMS codes remove friction from contact. An email code on a support poster opens a pre-addressed message; a phone code on a delivery van lets customers call with one tap; an SMS code with a prefilled message (“I want to book a table for 2”) streamlines ordering and inquiries. Text codes handle everything else — serial numbers, instructions, or short messages — and this QR code generator covers all six types on one page.
Designing QR Codes That Actually Scan
Three things determine whether a QR code generator‘s output scans reliably: contrast, size, and the quiet zone. Phones read dark modules on a light background; keep the contrast strong. Light-on-dark “inverted” codes often fail, and low-contrast brand colors (yellow on white) are a common reason printed codes do not work.
Size matters relative to scanning distance. A code scanned from arm’s length should be at least 2 × 2 cm; a billboard code needs to be far larger. When in doubt, print bigger and test with several phones — old and new, iOS and Android — under the actual lighting where the code will live.
Never remove the quiet zone: the blank margin around the code is part of the standard, and scanners use it to find the code’s edges. This tool’s default of 4 modules matches the specification. Also choose error correction to match the environment — High (30%) for codes that will be small, partially obscured, or printed on curved surfaces like cups and bottles. You can read more about how the encoding works on the library’s project page, which documents the QR Code Model 2 standard implementation used here.
Privacy and Static vs. Dynamic Codes
This tool creates static QR codes: the data is encoded directly into the pattern, so the code works forever with no middleman. Many commercial generators create dynamic codes instead — the code points to the vendor’s server, which redirects to your URL. Dynamic codes let you change the destination and track scans, but they stop working if you cancel the subscription, and every scan is logged by the vendor.
For WiFi passwords, contact details, and anything sensitive, static codes generated locally are the safer choice: there is no server that could leak or log your data. Because this QR code generator runs entirely in your browser, your URLs, email addresses, and WiFi credentials never touch a network at all. The tradeoff is honest — you cannot edit a static code after printing — so double-check the content before a big print run.
QR Code Generator: Frequently Asked Questions
How do I make a QR code for my website?
Select the Link tab, paste your full website URL, and the QR code appears instantly in the preview. Download the PNG and place it on your flyer, business card, or packaging. Always test-scan the code with your phone before printing, and use a short, permanent URL — a printed code cannot be changed later.
Are these QR codes really free with no watermark?
Yes. There is no signup, no account, no trial, and no watermark or logo added to your codes. The PNG you download contains only your QR code in the colors you chose. The codes are static, so they never expire and keep working without any subscription.
Do QR codes expire?
Static QR codes like the ones this generator makes never expire — the data is encoded directly in the pattern, so they work as long as the content itself is valid. A code linking to a deleted page will still scan; it will just open a dead link. Only dynamic codes from commercial services can stop working, because they depend on the vendor’s redirect servers.
What error correction level should I choose?
Medium (15%) is right for most uses — screens, flyers, and business cards. Choose High (30%) when the code will be printed small, placed where it might get scratched or dirty, or printed on curved surfaces like bottles and cups. Higher error correction makes the code slightly denser, so balance it against size.
Is my WiFi password or URL uploaded anywhere?
No. This QR code generator encodes everything locally in your browser using embedded JavaScript. Your URLs, WiFi credentials, email addresses, and phone numbers are never sent to a server, stored, or logged. It is safe for sensitive data and keeps working offline once the page has loaded.
Related Free Tools
- Barcode Generator — create scannable barcodes for products, books, and inventory.
- UTM Link Builder — build trackable campaign URLs before turning them into QR codes.
- Favicon Generator — generate favicons and app icons for the site your QR code points to.
- All Free Tools — browse the complete collection of free online tools — no signup needed.
From WiFi logins to product packaging, a free QR code generator turns any link or message into a one-scan action. Generate your code above, test it with your phone, and put it to work.