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PixelAndPDF

Free QR code & text generators online

Everything here is generated on your device, which means your data stays private and results appear instantly as you type. Use these tools when you need a scannable code or a quick text transform — not a design suite.

Getting a QR code that actually scans

Two things decide whether a code reads reliably: contrast and size. Keep the code dark on a light background — inverted codes confuse some older scanners — and aim for a printed width of at least 2 cm for a short URL, more if the code holds a lot of text. Leave the quiet zone around the edge alone; that white margin is part of the specification, not decoration.

Error correction controls how much of the code can be obscured and still decode. Medium is a sensible default. High is used automatically when you add a centre logo, because the logo covers part of the pattern and the extra redundancy is what lets the code survive it.

Print versus screen

Download the PNG for anything on a screen or for a quick print — it is generated at 1024 pixels, which is enough for a poster. Choose the SVG when the code is going into a design tool, a business card or professional print: it is vector, so it stays perfectly sharp at any size and will not develop soft edges when scaled up.

Nothing you enter here is transmitted anywhere. That matters most for the WiFi generator, where the code contains your network password in plain text — which is also why you should treat a printed WiFi code like a written-down password and put it somewhere you are happy for guests, but only guests, to see.

Which generator to open

Start with the basic QR code generator for URLs, plain text or short notes. Use the WiFi QR generator when guests should join a network without typing the password. Use the logo QR page when the code must carry a brand mark in the centre. Use the vCard QR when you want a contact card that phones can save after a scan.

Text generators on this hub are for quick transforms — for example alternating-case mock text — while the main case converters (uppercase, lowercase, title case) live under Converters because those are the jobs people search for by name.

Privacy for passwords and contact data

WiFi and vCard payloads can include secrets: network passwords, phone numbers, home addresses. Generation still happens in this tab only. Close the tab when you finish on a shared café PC, and do not email a WiFi PNG to a public list if the password is meant to stay private.

If you print a WiFi code for a shop or office, laminate it and refresh the password periodically the same way you would rotate a written guest password on the wall.

When a code fails in the wild

Most scan failures come from soft print, glossy glare, or a code that is too small on a packed flyer. Re-download the SVG, print larger, and keep high contrast. If you added a logo, shrink the logo so more of the pattern remains visible, or raise error correction before regenerating.

Test with two phones before you print a batch — camera apps differ. A code that works on your device but fails on an older Android camera usually needs a larger quiet zone or a simpler payload.

Frequently asked questions

Are PixelAndPDF QR code generators free?

Yes. Basic, WiFi, logo and vCard QR tools are free with no watermark, no expiry and no account. Codes are built in your browser.

Do WiFi QR codes upload my password?

No. The network name and password stay in your tab while the PNG or SVG is generated. Nothing is sent to PixelAndPDF servers.

Should I download PNG or SVG?

PNG is fine for screens and quick prints. Choose SVG for business cards, posters or design tools so the code stays sharp at any size.

Why won’t my QR code scan?

Usually the print is too small, too low-contrast, or the quiet zone was cropped. Print larger, keep dark-on-light, and leave a white margin around the code.

Can I put a logo in the middle of a QR code?

Yes — use the logo QR generator. It raises error correction automatically so scanners can still read the code under the logo.

What is a vCard QR code?

It stores contact fields (name, phone, email) so a phone can save a contact after scanning. Generate it on the vCard QR page; data never leaves your device.

Do generated QR codes expire?

No. Static codes you download keep working until you change the destination URL or WiFi password they encode.

Is there a size limit for QR text?

Very long payloads make dense codes that need more print area. Prefer short URLs or trim vCard fields if scanners struggle.

Where are uppercase and lowercase converters?

Those live under Converters because people search for them as conversion jobs. This Generators hub focuses on QR codes and a few playful text tools.

Can I use these generators in a cyber café?

Yes. They run offline in the browser tab after load, with no signup — suitable for guest WiFi cards and contact codes on shared PCs.