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Trình tạo mã QR

QR code generator: generate scannable QR codes from text or URLs with error correction and download for sharing and marketing, with one-click copy and offline.

Cách sử dụng

Nhập văn bản hoặc URL, chọn mức độ sửa lỗi, mã QR được tạo theo thời gian thực, có thể nhấp chuột phải để lưu hoặc sao chép dưới dạng hình ảnh.

Overview

QR Code Generator is a generator tool that QR code generator: generate scannable QR codes from text or URLs with error correction and download for sharing and marketing, with one-click copy and offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Create UUIDs and short strings
  • Mock data for testing
  • Generate strong passwords
  • Raffle and random picks
  • Use it to cross-check “二维码、qr code” in reports, docs or APIs to avoid manual conversion errors

How to use

  1. 1 Choose type and quantity
  2. 2 Set length/charset rules
  3. 3 Preview and lock/exclude items
  4. 4 Copy or export CSV/TXT

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Uses Crypto API
  • Batch export in chunks for thousands
  • Mock data for testing only

FAQ

Reproducible?
Fix seed or export log if needed.
How random?
crypto.getRandomValues with system entropy.
How is QR Code Generator different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “二维码、qr code” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
Tip：Tip: Bookmark this page or pin the tab; find related tools via categories and search (convert → calculate → export).
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All calculations run locally in your browser; nothing is uploaded.