Base64 → Image Preview

Instantly preview a Data URL Base64 string as an image.

Category: Image Tools

When to use?

Use it to check whether a Base64 image in an API response or HTML is valid.

How to use

  • Paste a data:image/... string.
  • Check the preview image.

Input Explanation

Paste a complete Base64 Data URL string starting with "data:image/...".

Calculation Basis

It uses the browser's native image rendering to decode the Base64 string instantly into a visible image.

Usage Examples

  • Verify encoded images - Check whether a Base64 image string renders correctly.
  • Prepare images for upload - Preview the result, then tidy images for blogs, shops, or social media.
  • Compare results - Check original and result side by side for quality and display.

Examples

  • Paste "data:image/jpeg;base64,/9j/4AAQ..." from an API response → renders as a real photo
  • A data:image string copied from HTML source → confirmed as a real image

Cautions

  • It processes via browser canvas, so original metadata (EXIF) may be lost or transparent areas may change color.
  • Extremely high-resolution large files may fail to convert due to browser image-decoding limits.

FAQ

Can I paste plain Base64?

A Data URL with the image MIME type is required.

Is the pasted Base64 sent to a server?

No. The Data URL renders directly as an image in the browser and is not sent out.

Can I check if the Base64 is broken?

If valid, the image shows; if malformed, it does not render, so you can check validity instantly.

Can I save the previewed image?

Right-click the preview to save, or use the browser's image-save feature.

Related Tools

  • Image to Base64 Converter - Convert an image file into a Data URL Base64 string, no server upload.
  • Base64 Converter - Encode text to Base64 or decode a Base64 string back to text.
  • SVG Preview - Render SVG code as an image in the browser to preview it.
  • Image Resizer - Resize multiple images in the browser with aspect ratio kept, no server upload.
  • Image Cropper - Enter pixel coordinates to crop just the area you need, in the browser.
  • Image Rotate / Flip - Rotate images in 90-degree steps or flip them horizontally/vertically.