Developer Data Tools
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Image tool

Base64 Image Decoder

Decode image Data URLs, inspect MIME hints and preview embedded Base64 images 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.

Preview appears after decoding.

Core Features

  • Preview Data URL images.
  • Show MIME type and decoded byte size.
  • Detect non-image Data URLs.
  • Inspect copy-pasted embedded assets locally.

Common Errors

  • Pasting raw Base64 without the data:image/... prefix.
  • Embedding very large images directly in JSON or CSS.
  • Trusting MIME hints without checking the decoded content.

Real Developer Use Cases

  • Debugging small SVG or PNG Data URLs.
  • Checking API payload image previews.
  • Estimating Base64 overhead before embedding an asset.
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.