How do I change the QR color in QRJINNI?

Use the QR color picker beside the Size field to instantly update QR colors.

How do I add a logo to my QR code?

Select a file via the Logo → Choose file control. QRJINNI places the image at the center automatically.

What does the Clear QR Code button reset?

Clear QR Code resets size to 200px, color to black, clears text, removes logos, and hides downloading until a new QR is generated.

Do QR codes created with QRJINNI expire?

Static QR codes never expire unless the linked content changes or becomes unavailable.

QRJINNI FAQs

Everything you need to know about using the free QRJINNI QR code generator.

QRJINNI is a free, browser-based QR code generator that lets you instantly create personalized QR codes. This FAQ explains how to change QR colors, add logos, choose the right size, download PNG/SVG files, and troubleshoot scanning problems.

All QR codes are generated directly on your device — nothing is uploaded or tracked. Just enter text, customize your QR, and download.

How to Use the QRJINNI QR Code Generator

Is QRJINNI free to use?

Yes — unlimited generation, no account needed, no watermarks.
Do I need to install an app?

No downloads needed. QRJINNI runs entirely in your browser. You may optionally add it to your phone’s home screen as a PWA.
What can I put in a QR code?
Anything that can be represented as text:
- URLs
- Short notes
- IDs, codes, references
- Emoji and Cyrillic text
Does QRJINNI support Cyrillic and emoji?

Yes — QRJINNI supports full UTF-8 characters, including emoji, Cyrillic, and multilingual text.
How do I change the size of my QR code?

Use the Size (px) input on the main page. Larger sizes improve printing and long-distance scanning.
How do I change the QR color?

Select a color using the QR color picker beside the size field. The QR updates instantly.

For best readability, keep a strong contrast — e.g. dark QR code on a light background.
What does the “Clear QR Code” button reset?
The Clear button resets QRJINNI to its default settings:
- Clears the text input
- Resets size to 200 px
- Resets QR color to black (#000000)
- Removes any chosen logo
- Hides download and share buttons
This is the fastest way to start fresh.
How do I add a logo to the QR code?
To add a centered logo:
- Enter your text or URL
- Click Logo → Choose file
- Select a PNG/JPG/SVG icon
- Regenerate the QR code
Small, simple logos scan best. Avoid very large or detailed images.

QR Code Technical Limits, Sizes & Encoding

Do QR codes expire?

No — static QR codes never expire. They work as long as the linked content remains available.
Can QR codes store very long text?

QR codes have a finite capacity. Extremely long text or URLs can create overly dense codes.
Why won’t my phone scan the QR?
Common causes:
- Low contrast between QR and background
- Very small printed size
- Blurry or compressed images
- Large logo covering too much of the pattern

Offline Mode, Mobile Devices & Home Screen App

Can I use QRJINNI offline?

Yes — after your first visit, most browsers allow QRJINNI to work offline using its service worker.
How do I add QRJINNI to my home screen?

Open qrjinni.com → browser menu → Add to Home Screen.

Commercial Use, Licensing & Allowed Usage

Can I use QRJINNI QR codes commercially?

Yes — your QR codes can be used on menus, posters, packaging, business cards, and any commercial material.
Do I need to credit QRJINNI?

No credit is required, but linking back is appreciated.

Always test QR codes before printing in quantity. Scanning quality depends on size, contrast, and clarity.

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