How do I generate a QR code for free?

Pick a content type (URL, Text, WiFi, vCard, Email, Phone, SMS, or WhatsApp), enter your data in the form above, and the QR code renders in real time as you type. Optionally customize the dot pattern, eye style, colors, gradient, logo, or frame — then click **Download PNG** or **SVG** to save at 256, 512, 1024, or 2048 pixels. DNS Robot's QR code generator is completely free with no registration, no watermarks, and no usage limits.

What is QR code error correction and which level should I use?

QR code error correction uses the Reed-Solomon algorithm to add redundant data so the code remains scannable even when partially damaged. There are four levels: L (Low, 7% recovery), M (Medium, 15%), Q (Quartile, 25%), and H (High, 30%). Use Level M for most purposes — it balances data capacity and durability. Use Level H if you plan to add a logo over the center of the QR code or if it will be printed on materials that may get scratched.

Can I customize the colors of my QR code?

Yes. Use the foreground and background color pickers to change the QR code colors. The foreground color is the dark modules (default black) and the background is the light area (default white). Important: maintain high contrast between foreground and background — the foreground must be darker than the background. Avoid light foreground colors on light backgrounds, as most scanners cannot read low-contrast QR codes.

What is the maximum amount of data a QR code can store?

A single QR code (Version 40, 177x177 modules) can store up to 7,089 numeric characters, 4,296 alphanumeric characters, or 2,953 bytes of binary data. However, more data means a denser QR code that requires higher resolution to print and scan. For URLs, keep them under 300 characters for reliable scanning. Using a URL shortener helps when encoding long links.

What is the best size for a QR code?

The best size depends on how the QR code will be used. Our generator exports at 256, 512, 1024, or 2048 pixels. For digital screens and emails, 256px is plenty. For printed business cards, flyers, and product labels, use 512px. For posters, signage, and large-format prints, use 1024 or 2048px so the code stays crisp at any DPI. The general rule: scanning distance (inches) divided by 10 equals the minimum printed QR code size.

Can I generate a QR code for WiFi credentials?

Yes. Enter your WiFi credentials in the standard WiFi QR format: WIFI:T:WPA;S:YourNetworkName;P:YourPassword;; — replacing the network name and password with your actual values. When someone scans this QR code with their phone, it automatically connects them to your WiFi network without typing the password.

What is the difference between static and dynamic QR codes?

Static QR codes encode data directly into the pattern — the content is fixed and cannot be changed after creation. DNS Robot generates static QR codes, which are free, work offline, and never expire. Dynamic QR codes use a short URL that redirects to the actual content, allowing you to change the destination later and track scan analytics — but they require a paid subscription service.

Why won't my custom-colored QR code scan?

The most common reason is insufficient contrast between the foreground and background colors. QR scanners expect dark modules on a light background. Ensure your foreground color is significantly darker than the background — a contrast ratio of at least 4:1 is recommended. Avoid inverting colors (light foreground on dark background).

Can I generate a QR code with a logo?

Yes. Our QR code generator supports logo overlay — upload any image (PNG, JPG, SVG) and it will appear centered on the QR code. When adding a logo, the error correction level automatically increases to H (High, 30% recovery) to ensure the QR code remains scannable despite the logo covering part of it. Adjust the logo size and margin for optimal results.

Is this QR code generator free with no sign up?

Yes. DNS Robot's QR code generator is completely free with no sign up, no registration, no account required, and no watermarks. Generate unlimited QR codes with all features — custom colors, logo overlay, gradient patterns, and PNG/SVG download. All processing happens in your browser, so there's nothing to install or pay for.

Do QR codes generated here expire?

No. QR codes generated by DNS Robot are static — the data is encoded directly into the QR pattern and never expires. Static QR codes work forever without any ongoing service or subscription. Unlike dynamic QR codes from paid services, our QR codes have no expiration date, no scan limits, and no dependency on external servers.

Are the QR codes generated by this tool free to use commercially?

Yes. All QR codes generated by DNS Robot are completely free for personal, commercial, and enterprise use. There are no watermarks, no attribution required, and no licensing restrictions. The QR codes are generated entirely in your browser — we don't store, track, or claim any rights to the codes you create.

How do I create a UPI QR code for PhonePe, Google Pay, or Paytm?

Pick the **UPI** content tab, enter your UPI ID (VPA) like `yourname@oksbi` or `yourname@paytm`, your name, and optionally a fixed amount in INR. Every UPI app — PhonePe, Google Pay, Paytm, BHIM, Amazon Pay, WhatsApp Pay — reads the same standard UPI QR format, so one code works everywhere. No app-specific generators needed. Stick the printed QR on your shop counter, food cart, or invoice and customers can pay you instantly.

Can I generate a Bitcoin or Ethereum QR code for my wallet?

Yes. Pick the **Crypto** content tab, choose your currency (Bitcoin, Ethereum, Solana, Litecoin, or Dogecoin), and paste your wallet address. Optionally add a payment amount and label. Compatible wallet apps automatically open with the address pre-filled when scanned. **Important:** always double-check the address before sending crypto — a single wrong character means lost funds, and our tool can't recover them.

Can I generate a PayPal payment QR code?

Yes. Pick the **PayPal** content tab, enter your PayPal.me username, and optionally a fixed amount and currency. The QR code generates a PayPal.me link that opens directly in PayPal when scanned. You'll need to set up a PayPal.me link first at paypal.me — it's free and takes a minute.

Can I generate a QR code for my location or address?

Yes. Pick the **Location** content tab, enter latitude and longitude, and optionally a place label. The QR code uses the standard `geo:` URI which opens in the default maps app on iOS, Android, and most desktops. Get coordinates from Google Maps by right-clicking any spot — the lat/lng appears at the top of the menu. Useful for restaurants, real estate listings, event venues, and store locations.

QR Code Generator — Create Custom QR Codes with Logo

40 Free QR Code Templates — One-Tap Designs

Skip the design work. We've curated 40 production-ready QR code templates across five categories — pick one above and your QR code instantly takes the new look. Every template is free, scannable, and downloads as PNG or SVG.

Brand Kits

Instagram, YouTube, Spotify, WhatsApp, Apple, TikTok, LinkedIn, Pinterest, Telegram, OpenAI.

Use Case

WiFi share, restaurant menu, business card, event ticket, crypto wallet, hotel WiFi, coffee shop, real estate, gym, app download.

Aesthetic

Minimalist, sunset, ocean, neon, coral, pastel, cyberpunk, forest, royal purple, mono stripes.

Holiday

Christmas, Valentine's, Halloween, Diwali, New Year — seasonal sales and greetings.

Industry

Healthcare, education, beauty salon, auto service, yoga & wellness — purpose-fit defaults.

Pick a template, then switch to Custom to fine-tune every detail.

What Is a QR Code Generator?

A QR code generator is a tool that converts text, URLs, WiFi credentials, or any other data into a Quick Response (QR) code — a two-dimensional barcode that can be scanned by smartphones and cameras. QR codes were invented in 1994 by Denso Wave for tracking automotive parts and have since become the universal bridge between physical and digital content, used in marketing, payments, authentication, and information sharing.

DNS Robot's free QR code generator lets you create QR codes with full customization: choose from 8 content types (URL, Text, WiFi, vCard, Email, Phone, SMS, WhatsApp), 6 dot patterns, customizable eye styles, gradient or solid colors, optional logo overlay (41 brand presets or upload your own), and 8 frame styles with custom labels. Pick error correction (L/M/Q/H), choose download size (256, 512, 1024, or 2048 px), and export as PNG or SVG. The QR code renders live as you type and is generated entirely in your browser — your data never reaches a server.

DNS Robot QR Code Generator tool showing input field, size and error correction options, color pickers, and QR code preview with download button — DNS Robot's free QR code generator with custom colors, error correction levels, and instant PNG download.

How to Generate a QR Code Online

Creating a QR code takes just three steps. Our QR code maker generates codes instantly with a live preview — no account or payment required.

Enter Your Content

Type or paste the text, URL, WiFi credentials, or any data you want to encode into the input field. The QR code preview updates in real time as you type. URLs should include the full protocol (https://) for best scanner compatibility.

Customize Options

Pick a dot pattern, eye/finder style, foreground/background colors (or a gradient), and download size (256/512/1024/2048 px). Optionally upload a logo or pick one of 41 brand presets, then add a frame with a custom "SCAN ME" label. Error correction (L/M/Q/H) auto-upgrades to H whenever a logo is set so the code stays scannable.

Download PNG or SVG

Click Download PNG for raster output (works with logos, gradients, and frames) or SVG for infinitely scalable vector output. Files generate locally in your browser — no server upload occurs. Use the result in documents, presentations, websites, business cards, posters, or anywhere you need a scannable QR code.

QR Code Error Correction Levels Explained

QR codes use Reed-Solomon error correction to remain scannable even when partially damaged or obscured. Choose the right level based on how your QR code will be used.

Low

Smallest QR code. Best for digital screens where damage is unlikely.

Medium

15%

Recommended default. Good balance of size and durability for most uses.

Quartile

25%

Higher resilience. Ideal for printed materials that may get worn or folded.

High

30%

Maximum resilience. Use when adding logos or for harsh environments.

Tip: Higher error correctionmeans more data modules in the QR code, producing a denser pattern. If you're encoding a long URL, Level L or M keeps the code simpler and easier to scan.

QR code error correction levels comparison showing Level L at 7 percent, Level M at 15 percent, Level Q at 25 percent, and Level H at 30 percent recovery — QR code error correction levels: L (7%), M (15%), Q (25%), and H (30%) — higher levels survive more damage but produce denser codes.

Best Practices for QR Code Design

Follow these tips to ensure your QR codes scan reliably across all devices and conditions.

High Contrast Colors

Keep the foreground dark and background light. Minimum 4:1 contrast ratio ensures reliable scanning.

Adequate Quiet Zone

Leave white space around the QR code (at least 4 modules wide). Avoid placing text or graphics too close to the edges.

Right Error Correction

Use Level M for standard use. Increase to Q or H if the code will be printed on rough surfaces or have a logo overlay.

Use Full URLs

Always include https:// in URLs. Use URL shorteners for long links to keep the QR code pattern simpler.

Test Before Printing

Always scan your QR code with multiple devices before mass printing. Test at the expected scanning distance.

Keep Data Minimal

Less data means a simpler, easier-to-scan QR code. Encode only what's necessary — use landing pages for complex content.

QR Code Use Cases: Where to Use QR Codes

QR codes have become essential across industries. Here are the most popular use cases for generated QR codes.

Website URLs

Link to websites, landing pages, app store listings, and social media profiles.

WiFi Access

Share WiFi credentials for guest networks in offices, cafes, hotels, and events.

Business Cards

Encode vCard data with name, phone, email, and company for instant contact saving.

Product Labels

Link to product manuals, ingredient lists, reviews, or warranty registration pages.

Payments

Enable contactless payments via PayPal, Venmo, cryptocurrency wallets, and bank apps.

Event Tickets

Create scannable tickets for events, boarding passes, conference check-ins, and venue entry.

QR Code Size Guide: Choosing the Right Dimensions

The right QR code size depends on where it will be displayed and how far away the scanner will be. Use this guide to choose the best dimensions.

256

256px — Digital, Email & Social

Email signatures, chat messages, blog posts, small web widgets, social-media images. Scan distance: under 12 inches. Smallest file size.

512

512px — Print Materials

Business cards, flyers, brochures, product labels, restaurant menus, packaging. Default for most printed use cases. Scan distance: 1–2 feet.

1024

1024px — Posters & Signage

Posters, banners, store windows, trade-show displays, retail signage. Scan distance: 3–6 feet. High DPI for crisp print at A3/A2.

2048

2048px — Billboards & Large Format

Billboards, building wraps, vehicle decals, large-format printing. Scan distance: 6+ feet. Maximum resolution for any print pipeline.

SVG

SVG — Infinitely Scalable

Use the SVG export for vector graphics — scales to any size with zero quality loss. Perfect for design tools (Figma, Illustrator). Note: SVG is unavailable when a logo or frame is set; use PNG instead.

Rule of thumb:Scanning distance (inches) ÷ 10 = minimum printed QR code size (inches). A code scanned from 20 inches away should be at least 2 inches wide.

QR code size guide showing recommended pixel sizes for digital screens, print materials, posters, and large-format signage — Choose QR code size based on scanning distance: 256px for digital, 512px for print, 1024–2048px for signage and large-format.

Free QR Code Generator with Logo Overlay

Add a brand logo to the center of your QR code without sacrificing scannability. Our QR code generator with logo ships 41 ready-to-use brand presets and accepts custom uploads (PNG, JPG, SVG up to 2 MB), with automatic error-correction tuning.

41 Brand Presets

Facebook, Instagram, WhatsApp, TikTok, YouTube, LinkedIn, Telegram, Spotify, Apple, Google, PayPal, OpenAI, Bluesky, and 28 more — one click to apply.

Custom Upload

Drop or pick your own PNG, JPG, or SVG (max 2 MB). Logos render at the center with a clean white margin so the surrounding QR pattern stays readable.

Auto Error Correction H

Whenever a logo is set, error correction auto-upgrades to Level H (30% recovery). Even with a centered logo covering ~10–15% of the code, scanners still resolve cleanly.

Size & Margin Sliders

Tune logo size from 10% to 50% of the QR code and adjust the white margin from 0–20 px. Always test the final code with a phone before printing.

QR Codes for Every Use Case: WiFi, vCard, WhatsApp & More

Each content type encodes data using a standard format that scanners parse automatically. No manual formatting required — just fill in the form fields and the QR code generator handles the syntax.

WiFi QR Code Generator

Share guest WiFi without typing passwords. Encodes SSID, encryption (WPA/WEP/open), and password.

WIFI:T:WPA;S:Guest;P:hello;;

vCard Business Card QR

Save name, phone, email, company, and address to the scanner's contacts in one tap. Perfect for business cards.

BEGIN:VCARD\nFN:Jane Doe\nTEL:+15551234

WhatsApp QR Code

Open a WhatsApp chat with you, optionally pre-filled with a message. Great for support and lead capture.

https://wa.me/14155552671?text=Hi

Email QR Code

Open an email draft with the recipient, subject, and body pre-filled. Useful for feedback forms and inquiries.

mailto:hi@example.com?subject=...

SMS QR Code

Compose a text message to a number with optional pre-filled body. Common for opt-in flows and short codes.

sms:+15551234?body=YES

URL QR Code

The most common QR type — links to any web page, app store listing, social profile, or landing page. Always include https://.

https://dnsrobot.net/qr-generator

Payment QR Codes: UPI, Crypto, PayPal

Accept payments globally with one tool. Whether you're a shop in Mumbai accepting UPI, a freelancer collecting PayPal tips, or a creator receiving Bitcoin donations — every major payment QR format is built in.

UPI Payment QR (India)

One QR works for PhonePe, Google Pay, Paytm, BHIM, Amazon Pay, WhatsApp Pay — every UPI app reads the same standard format. Enter your UPI ID (VPA) like name@oksbi, optionally fix an amount, and stick the printed QR on your shop counter.

upi://pay?pa=name@oksbi&am=100Open dedicated UPI QR generator

Crypto Wallet QR

Generate scannable wallet addresses for Bitcoin, Ethereum, Solana, Litecoin, Dogecoin. Compatible wallets open with the address pre-filled and optional amount. Always verify the address before sending — crypto transactions are irreversible.

bitcoin:bc1q...?amount=0.001

PayPal.me QR

Enter your PayPal.me username (set up free at paypal.me first), optional amount, and currency. Scanners are taken straight to a PayPal payment page — perfect for tips, freelance invoices, and donations.

https://paypal.me/you/25USD

Tip: the UPI QR is the same format every Indian payment app uses — print one and accept payments from any wallet.

Custom Frames: Add "SCAN ME" Labels to Your QR Code

Frames make QR codes more inviting and dramatically increase scan rates on print materials. Choose from 8 frame styles, set your own label text, and pick frame and label colors that match your brand.

Simple

Thin border with rounded corners — clean and unobtrusive.

Bold

Thick border for high visibility on busy backgrounds.

Rounded

Heavily rounded corners for a soft, modern look.

Bottom Banner

Solid label bar below the QR code — most common print style.

Top Banner

Label bar above the QR code — useful for instruction text.

Bracket

Corner brackets only — minimal and elegant.

Pill

Fully rounded pill shape — eye-catching for marketing.

None

Plain QR code with no frame — for technical contexts.

Note: Frames bake into the PNG export at high resolution. SVG export is unavailable when a frame is set — use PNG for any framed QR code.

Free QR Code Generator — No Sign-Up, No Expiration

Most "free" QR code generators require an account, watermark your code, or shut down the redirect service after a trial — silently breaking every printed QR you've already shipped. DNS Robot is different.

No Sign-Up Required

No account, no email, no payment method. Open the page, generate the QR, download. Generate as many codes as you want — there are no daily limits, no usage caps, no "upgrade to Pro" prompts.

No Expiration, Ever

Our QR codes are static — your data is encoded directly into the dot pattern. There's no redirect service in the middle that can shut down. The QR code keeps working in 5 years, 10 years, forever, even if dnsrobot.net disappears.

Private by Design

All QR generation happens client-side in your browser. We never see your URLs, WiFi passwords, vCard contacts, or any other data. No analytics on your QR content, no logging, no scan tracking.

Free for Commercial Use

No watermarks, no "Powered by" tags, no attribution required. Use generated QR codes on business cards, packaging, billboards, marketing campaigns, or anywhere else — at no cost.

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