Question 1

Is QR Tool Lab free?

Accepted Answer

Yes. You can generate, download, scan, and decode QR codes without an account or watermark.

Question 2

Are uploaded QR images stored?

Accepted Answer

No. Image decoding happens locally in your browser, so the image does not need to be sent to the server.

Question 3

Do generated QR codes expire?

Accepted Answer

No. QR Tool Lab creates static QR codes that keep working as long as their encoded content or destination remains available.

Question 4

Can an AI model call QR Tool Lab directly?

Accepted Answer

Yes. Compatible AI clients can connect to the public remote MCP endpoint and invoke generate_qr_code. Other systems can use the OpenAPI or HTTP API.

Question 5

Which QR settings can an AI client control?

Accepted Answer

Content, foreground and background colors, 128 to 2048 pixel dimensions, margin, error correction, and PNG or SVG output.

二维码解码器与在线识别工具

如何识别图片中的二维码？