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Image to Base64

Encode the original supported image bytes as a Base64 data URL without resizing or re-encoding.

How to Use Image to Base64

Follow these steps, then review the result and the limitations below:

  1. Choose a supported PNG, JPEG, WebP or self-contained SVG.
  2. Click Encode Image.
  3. Use Copy Data URL, or select the read-only output and copy it manually if clipboard permission is unavailable.

Practical Worked Example

A PNG output begins with data:image/png;base64,. Decoding the portion after the comma returns the original selected file bytes, not a screenshot or a resized image.

Key Features & Capabilities

  • Task-specific controls with labelled fields and status feedback.
  • Processing uses browser APIs without a tool upload request.
  • Invalid input is reported before a successful output is offered.

Encode the original image bytes as a data URL

A data URL combines a MIME prefix with Base64 text. It can be useful for a small self-contained HTML or CSS example. This tool encodes the selected bytes rather than resizing or converting them through a canvas.

How It Works (Technical Overview)

The file signature determines the MIME prefix. FileReader reads the original bytes into a Base64 data URL. No image processing service is called.

Real-World Use Cases & Applications

  • Encode the original image bytes as a data URL. Check the worked example before processing your own input.

Privacy, Security & Accuracy

Base64 is roughly one-third larger than binary data before the prefix. Large inline images make documents harder to maintain and can interfere with caching. Original embedded metadata remains in the encoded bytes. Practical limits depend on browser support and available memory. Files above 20 MiB are rejected; raster processing is limited to 16 million pixels and output dimensions to 8192 pixels per side.

Pro Tips for Best Results

Check the result against your original and the requirements of the destination. Keep an unchanged source copy.

Frequently Asked Questions

Does Base64 encrypt an image?

No. Anyone with the data URL can decode the image. Do not treat encoding as access control or redaction.

Is my input uploaded for processing?

The tool code works in the browser. The page can also load advertising or analytics scripts, which have separate data practices. Avoid sensitive files on an unsuitable device or page.

Related Tools

Explore complementary tools in the Image Tools suite:

  • Image Compressor — Export browser-readable images as JPEG with adjustable quality and optional dimensions. Output size may vary.
  • JPG to WebP — Convert a JPG or JPEG photograph to WebP with adjustable quality, optional resizing, and an output preview.
  • PNG to WebP — Convert a PNG image to WebP, preserving transparency with adjustable quality and optional resizing.
  • Image Resizer — Resize a static image by dimensions or percentage and export PNG. One dimension preserves the aspect ratio.