Free tool

QR codes that actually scan.

Menus, guest WiFi, digital business cards, maintenance docs on the machine: our generator creates QR codes right in your browser – with your logo, in your colours, as SVG and PDF for print. Free, no sign-up, no watermark.

  • Free & no sign-up
  • No watermark
  • Computed in your browser
  • Static codes, valid forever
QR code that opens the LEANOFY QR code generatorL

Not a mockup: this code is real. Scan it – it opens the tool. Error correction level H, which is why it stays readable despite the logo in the centre.

Content types

What you can encode

A QR code is more than a link. The content type tells the phone what to do – join a WiFi network, save a contact, start navigation. That is what decides whether a scan ends in an action or in a wall of text.

URL & link

Landing page, menu, form, app store entry. The classic – one scan, one page.

WiFi access

SSID, encryption and password in the code. Guests connect without anyone dictating a password.

vCard business card

Name, company, phone, email, address. One tap and it is in the address book – not in the bin.

Email

Recipient, subject and body pre-filled. Ideal for support requests with a clear subject line.

Phone

Number straight into the dialler. Useful on vehicles, signs and emergency notices.

SMS

Number plus a pre-written message. For callback requests and simple opt-ins.

Location

Geo coordinates for instant navigation. For sites, entrances and construction locations.

Plain text

Serial numbers, batches, inspection notes. Anything that must stay readable without an internet connection.

In practice

Where QR codes genuinely save work

A QR code is good when it removes a media break – the moment someone retypes something that already exists in digital form. These are the cases we see most often with our clients.

Restaurants

The menu at the table, always current. Prices change without reprinting anything – the code stays the same, only the page behind it changes.

Industry & plant

A code on the nameplate leads to maintenance docs, spare part lists or a fault report. The technician stands in front of the machine and already has the right document.

Medical practices

Intake forms or appointment booking straight from the waiting room. Less paper at reception, less retyping into the practice software.

Trade fairs & events

A vCard instead of a business card: your details land in the address book, not in a pile. Displayed at the booth, it works even when nobody is at the desk.

Logistics & warehouse

Batch, container, pallet – encoded as plain text and readable offline. No network needed, no dependency on a service.

Reception & office

Guest WiFi on a table stand. Visitors are online in seconds and the password is no longer shouted across the room.

Under the hood

Why a QR code generator is not a weekend project

Any library can produce an image. A code that still scans on recycled paper, behind glass and from two metres away takes a few more decisions. These are the ones baked into the tool.

Error correction is a budget

QR codes carry Reed-Solomon redundancy: level L recovers 7% of the modules, level H up to 30%. A logo in the centre spends exactly that budget. We pick the level to match the logo size – rather than pasting it on and hoping.

Scannability is verified, not claimed

Before you download, the tool decodes the generated code again with a real decoder. Too little contrast or an oversized logo produces a warning – instead of 5,000 useless flyers.

Vector, not pixels

SVG and PDF are true vector graphics: scalable from a receipt to a building wrap without the module edges fraying. PNG up to 2048 px covers everything digital.

No backend, no data trail

The entire computation runs in your browser. WiFi passwords and vCard details never leave your device – there is no server that could store them. That settles the privacy question instead of managing it in a data processing agreement.

A finished QR code in 60 seconds

  1. 1

    Choose the content type

    URL, WiFi, vCard, email, phone, SMS, location or plain text – the tool asks for exactly the fields that type needs.

  2. 2

    Design it

    Match the colours to your corporate design and optionally place your logo in the centre. Contrast and logo size are continuously checked against scannability.

  3. 3

    Download and test

    SVG or PDF for print, PNG for the web. Then scan the code yourself once – with the device and at the size it will actually be used.

Create a QR code

Frequently asked questions

Do the QR codes stay valid forever?

Yes. They are static codes: the target sits inside the code itself, no redirect runs through our servers. So there is no expiry date and no provider who could switch the code off. It works for as long as the target – your URL, for example – is reachable.

Is the tool really free, without sign-up and without a watermark?

Yes. No registration, no account, no watermark and no limit on the number of codes. You may also use the generated codes commercially – on packaging, posters, vehicles or invoices.

Can I add a logo without breaking the code?

Yes, within limits. At error correction level H, roughly 20 to 25% coverage in the centre is usually safe. The tool checks the finished code against a real decoder and warns you as soon as the logo grows too large or the contrast becomes too weak.

Which format do I need for print?

SVG or PDF – both are vector formats and stay sharp at any size. PNG is meant for digital channels. As a rule of thumb for sizing: the code should measure about one tenth of the intended scanning distance. From two metres away that means roughly 20 cm per side.

Is my data – the WiFi password, for instance – transmitted anywhere?

No. The code is computed entirely in your browser. There is no upload and no server receiving content. Whatever you type stays on your device.

Why are there no dynamic codes with scan statistics?

Because dynamic codes require a redirect service: the code then points not at your target but at someone else's server, which logs scans and can switch the code off when the subscription ends. We did not want to slip that in. If you genuinely need tracking or re-targetable codes for a campaign, we are happy to build it as a dedicated solution – with the redirect service running on your domain and under your control.

This tool shows how we work.

A well-considered core instead of a quickly wired-in library, verified results instead of pretty pictures, and no data that has to leave the device. That is the same care that goes into our client projects – from internal automation to custom software.

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