Base64 QR 코드 생성기
텍스트를 입력하고 Base64로 즉시 인코딩한 후 QR 코드를 생성하세요.
About Base64 QR 코드 생성기
이 도구는 먼저 텍스트를 Base64 형식으로 인코딩한 다음 인코딩된 문자열에서 QR 코드를 생성합니다. 긴 문자열을 복사하지 않고 장치 간에 Base64 데이터를 공유하는 데 이상적입니다.
How It Works
- Type or paste any text into the input box.
- The tool immediately encodes it to Base64 format.
- Click Generate QR to render a scannable QR code from the Base64 string.
- Download the QR as a PNG image or scan it directly from the screen.
Use Cases
- Device transfer: Share configuration strings, tokens, or credentials between a desktop and a mobile device by scanning instead of typing.
- Offline sharing: Print QR codes to share Base64 data without an internet connection.
- JWT payloads: Encode a JWT or API key to Base64 and share via QR for quick import into mobile apps.
- Data URIs: Share small Base64-encoded images or files as QR codes.
- Developer workflows: Quickly pass encoded values between a dev machine and a test device.
Why Encode to Base64 Before Generating a QR Code?
Standard QR codes store plain text. A Base64 QR code stores a Base64-encoded string — which is useful in several specific scenarios:
- Binary or special characters: Base64 safely encodes any binary data (bytes, non-UTF8 characters) into a printable ASCII string that QR codes handle reliably.
- Structured data: JWT tokens, API keys, and config strings are already Base64-encoded — this tool lets you wrap them in a QR without double-encoding.
- Receiver-side decoding: Apps that expect Base64 input (mobile SDKs, config importers) can scan the QR and use the value directly without manual conversion.
- Obfuscation: While not encryption, Base64 prevents casual reading of the QR content by humans who might glance at the raw string.
QR Code Size Limits
QR codes support up to approximately 2,900 alphanumeric characters. Since Base64 encoding increases data size by ~33%, your original input should ideally be under 2,100 characters to produce a scannable QR. Longer inputs result in denser QR codes that may be harder to scan — this tool warns you automatically.
Frequently Asked Questions
What is a Base64 QR code?
A Base64 QR code is a QR code whose data payload contains a Base64-encoded string. It lets you share encoded text or data between devices by scanning with a smartphone camera, without manually copying long strings.
How do I generate a QR code from Base64?
Enter your text in the input box above. The tool automatically encodes it to Base64, then click Generate QR to create a scannable QR code from the result. You can download it as a PNG image.
What is the maximum text length for a Base64 QR code?
QR codes can hold up to about 2,900 characters in alphanumeric mode. Since Base64 expands data by ~33%, your original text should be under ~2,100 characters for a reliably scannable QR code.
Is my data sent to a server when generating the QR code?
No. All encoding and QR generation happens entirely in your browser using JavaScript. Nothing is sent to our servers.
What can I use a Base64 QR code for?
Common uses include transferring configuration strings, sharing API keys or tokens, passing encoded credentials between devices, embedding data URIs, and sharing small Base64 payloads without copy-pasting long strings.