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Base64 Encoder & Decoder

Encode or decode text to/from Base64

What is Base64 Image Encoder?

Convert images to Base64 data URIs and Base64 strings back to images with our free online tool. Base64 image encoding lets you embed images directly in HTML, CSS, and JavaScript without separate image file requests, reducing HTTP requests and improving page load performance for small images.

How to Use Base64 Image Encoder

1

Upload an image file (PNG, JPG, GIF, WebP, or SVG).

2

The tool instantly generates the Base64 encoded string.

3

Copy the data URI for use in HTML img tags or CSS.

4

Optionally decode a Base64 string back into an image.

Key Features

Support for PNG, JPG, GIF, WebP, and SVG formats
Generate complete data URI for HTML/CSS embedding
Preview encoded image before copying
Decode Base64 back to downloadable image
No file size limits for encoding

Frequently Asked Questions

When should I use Base64 images?

Base64 images are best for small icons, logos, and decorative elements under 10KB. They reduce HTTP requests but increase HTML/CSS file size by ~33%. For larger images, regular image files with proper caching are more efficient.

Can I use Base64 images in emails?

Yes, Base64 encoded images can be embedded directly in HTML emails, ensuring images display without being blocked by email clients that disable external image loading.

Does Base64 encoding affect image quality?

No, Base64 is a lossless encoding scheme. The image quality remains exactly the same - only the format of representation changes from binary to ASCII text.