QR Code Generator

Open the QR generator, pick URL as the data type, and paste the link in the text field - include https:// at the start. Choose output size based on use case: 200-300px for screens, 600px or higher for print so it stays sharp when scaled. Hit Generate, the tool encodes the URL into the QR matrix using a JavaScript library, and you get a PNG you can download. Test it with your phone before sharing - scan from the screen and check the URL opens correctly. Wrong link printed on a thousand flyers is an expensive lesson.

Static QR codes themselves don't expire - the matrix encodes a fixed URL and stays valid forever, no subscription, no server. What can expire is whatever the URL points to. If you printed business cards with a QR pointing to yourcompany.com/promo and you take that page down, the QR still scans cleanly but lands on a 404. Dynamic QR codes (from paid services) point to a redirect URL that you can edit later, so you can change the destination without reprinting. For permanent destinations - your homepage, a phone number, a vCard - static is the right choice.

Yes, the format is well-defined. The QR encodes a string like WIFI:T:WPA;S:NetworkName;P:YourPassword;; - T is encryption type (WPA, WEP or nopass), S is the SSID, P is the password. The generator handles the syntax for you - just enter SSID, encryption type, and password in their fields. Phones running modern iOS and Android scan it from the camera and prompt to join automatically. Great for guest Wi-Fi at offices, cafes, or events - no more dictating uppercase B, dollar sign, two zeros. Print it on a small card and put it on the wall.

A scannable digital business card. The QR encodes a vCard formatted text block - name, phone, email, company, title, address, website - and when scanned, the phone offers to save it directly to contacts. No typing, no missed digits. The generator collects the fields through a form and builds the proper vCard 3.0 or 4.0 syntax behind the scenes (BEGIN:VCARD ... END:VCARD). Useful at events, conferences, on the back of physical business cards, or in email signatures as a fallback. Both iOS Camera and Android default scanners recognize vCard QRs and trigger the contact-save flow automatically.

Two factors matter: pixel size and physical size. For pixel size, generate at 600x600 or 1000x1000 so it stays crisp when printed - upscaling a 200px QR for print produces fuzzy edges that scanners sometimes refuse. For physical size, the rule of thumb is at least 2cm x 2cm (about 0.8 inches) for close-range scanning at arm's length, and 5cm or more for posters viewed from a couple of meters away. Always leave a clear quiet zone of empty white space around the QR, at least 4 modules wide, or scanners struggle to find the boundary.

Yes, but follow the contrast rule strictly. Dark foreground on light background is what every scanner expects - black on white is the safe default. Dark blue, dark green, deep purple all work fine if the background stays light. Inverting it (light QR on dark background) breaks many older scanners, even though some modern ones cope. Avoid low-contrast pairs (light gray on white, dark gray on black), and never use red on green or other colorblind-unfriendly combos. After customizing, scan with two or three different phones at varying distances. If any fail, dial back the styling.

Capacity depends on data type and error-correction level. At maximum capacity (Version 40, low error correction), a QR can store about 7,089 numeric digits, 4,296 alphanumeric characters, or 2,953 binary bytes. In practice, you almost never want that. The more data, the denser the matrix, and dense QRs are harder to scan, especially at small print sizes or low camera quality. Keep URLs short (use a redirect domain if needed), trim Wi-Fi passwords and vCard fields to essentials. A QR with 50-200 characters scans reliably across devices. Above 1000 characters, expect failures.

Yes - PNG is the default download format. Generate the QR, click the Download PNG button, and the tool exports the matrix as a transparent or white-background PNG file. PNG is the right choice for screen use, slide decks, social media, and anywhere you need pixel-precise output. For print, generate at a larger pixel size first (600px or more) so the PNG holds up under scaling. If your tool also offers SVG, that's better for print and posters because it scales infinitely without losing sharpness. PDF export is sometimes available too for direct print pipelines.