Convert & Preview Base64 Images 🖼️

Encode images into data URLs for CSS/HTML or decode Base64 strings back into visual assets instantly.

💡 Use Cases

Stop guessing what a data:image/... string in your database or stylesheet contains. - Decode: Paste any Base64 string to preview the image, identify its format, and check dimensions. - Encode: Drag and drop images to generate clean, production-ready Base64 code snippets.

Privacy Note: All processing happens locally in your browser. Your data never leaves your machine.

📘 Pro-Tips

  • Automatic Header Detection Don't worry about stripping the data:image/png;base64, prefix. The tool identifies the file type even if you paste a raw string.
  • Save Decoded Images Download your decoded results directly to your device with the correct file extension in one click.
  • Streamline Your Code Use the "Copy" button in the Encode tab to grab the full data URL and paste it directly into your CSS or HTML src attribute.
  • Audit Asset Specs View the original file size (KB/MB) and resolution (width/height) instantly to ensure your assets are optimized for the web.

🧐 FAQ

Is there a file size limit? The tool handles files up to several megabytes. For optimal performance, use it for web assets like logos, icons, and thumbnails. Large images may cause brief browser latency.

Which formats are supported? Any format your browser can render, including PNG, JPEG, WebP, GIF, and SVG.

Why is my code not converting? Ensure your string isn't truncated or corrupted. If you are copying from a source that adds extra line breaks or hidden characters, the encoding may break.

🚀 Performance: Why Base64?

Base64 encoding represents binary data using 64 printable characters. In web development, "inlining" assets directly into HTML or CSS eliminates extra HTTP requests, speeding up the initial render of critical UI elements.

The Trade-off: Base64 increases file size by roughly 33%. For the best performance, limit inlining to tiny assets (under 5–10 KB) where the benefit of saving a server round-trip outweighs the increased payload.