Question 1

Is maintool free to use?

Accepted Answer

Yes. maintool is free with no hard limit on how many QR codes you can create. No account or credit card is required. The site may display ads to support hosting and development.

Question 2

Is my data private?

Accepted Answer

QR generation happens in your browser. The content you type (URLs, WiFi passwords, phone numbers, vCard fields) is not uploaded to maintool servers for generation. Aggregate analytics about page visits may be collected as described in the Privacy Policy.

Question 3

What QR types are supported?

Accepted Answer

maintool supports URL/link, WiFi, WhatsApp, phone, email, SMS, location, Instagram, PDF, menu, and vCard (contact) QR codes. Each type has a dedicated generator page with tips and FAQs.

Question 4

What download formats are available?

Accepted Answer

PNG for screens and simple sharing, SVG for design tools and scalable print, and PDF for print-ready files. Choose SVG or PDF when you need sharp edges at large sizes.

Question 5

Do QR codes expire?

Accepted Answer

Static QR codes from maintool do not expire. They keep working as long as the destination remains valid (for example, the website still exists, or the WiFi password has not changed).

Question 6

Can I add my logo to a QR code?

Accepted Answer

Yes. Upload a PNG or JPG logo (max 2MB). Keep strong contrast and avoid covering too much of the code so scanners can still read it. Always test after adding a logo.

Question 7

Does maintool track scans?

Accepted Answer

No. We generate static QR codes without built-in scan analytics. If you need scan counts or editable destinations, you would use a separate dynamic QR service.

Question 8

How do I create a WiFi QR code?

Accepted Answer

Open the WiFi QR Generator, enter SSID, password, and encryption type, generate, then download. See the WiFi guide for placement and security tips.

Question 9

What size should I print?

Accepted Answer

As a rule of thumb, keep the printed QR at least about 2×2 cm (0.8 inches) with quiet space around it. Larger is better for distance scanning (posters, banners).

Question 10

What is the difference between static and dynamic QR codes?

Accepted Answer

A static QR encodes the destination in the image itself. It does not expire and needs no account, but you cannot change the destination without printing a new code. Dynamic QR services usually point to a short redirect URL you can edit later and may track scans. maintool focuses on private static generation in your browser. See our static vs dynamic guide for details.

Question 11

Why does my printed QR fail to scan?

Accepted Answer

Common causes are codes that are too small, low contrast, cropped quiet zones, glossy glare, or damaged prints. Aim for at least about 2×2 cm at arm’s length, dark modules on a light background, and a clear margin. Test with both iPhone and Android under the same lighting as the final location. Our print-size guide covers distance and materials.

Question 12

Can I use maintool for business marketing?

Accepted Answer

Yes. Typical uses include menu URLs, WiFi for guests, WhatsApp chat shortcuts, Google review links, event posters, and vCard sharing on business cards. Prefer short stable URLs and reprint when destinations change. Guides explain restaurant menus, Airbnb WiFi, review QR codes, and social profile codes.

Question 13

Does maintool copy content from other sites?

Accepted Answer

No. Tool pages and guides are written for maintool’s client-side generators. We describe formats and practical workflows so you can create codes without uploading sensitive fields. Brand names such as WhatsApp or Google appear only to identify compatible formats.

Question 14

Where can I learn more?

Accepted Answer

Browse the Guides hub for step-by-step articles, or contact us if you need help with a specific issue.