Developer Data Tools
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Code tool

QR Code Generator

Generate a scannable QR code for short text and URL test payloads in the browser.

Tool Workspace

This tool runs in your browser. Developer Data Tools does not save pasted input to a server, but avoid using production secrets, access tokens, private keys or sensitive business data in any online page.

Ready. Processing runs in your browser.

QR preview appears after generation.

Core Features

  • Generate Version 1-L QR codes for short byte-mode payloads.
  • Render an SVG preview locally.
  • Copy the generated SVG markup.
  • Avoid sending QR payloads to a remote image service.

Common Errors

  • Trying to fit long URLs into this compact browser generator.
  • Assuming QR generation hides the source text.
  • Using production secrets in QR payloads.

Real Developer Use Cases

  • Creating short local device test URLs.
  • Embedding small test payloads in documentation.
  • Checking QR scan flows without a network QR service.
JSON Formatter & Validator

Format and validate copied API responses.

Text Diff Checker

Compare generated output and source snippets.

Base64 Encoder/Decoder

Inspect encoded data fragments.