How do I convert an image to Base64?

Upload your image to the encoder, or paste a Base64 string in the decoder. Our tool instantly converts between formats entirely in your browser.

Is my image data private?

Yes! All processing happens entirely in your browser using JavaScript. Your images and Base64 strings are never uploaded to any server.

What image formats are supported?

We support PNG, JPG, GIF, WebP, SVG, HEIC, HEIF, AVIF, TIFF, BMP, and ICO. All formats work for both encoding and decoding.

Is this tool free to use?

Yes! Our Base64 tools are completely free. No signup, no watermarks, no limits. Process as many images as you need.

Image Base64 Encoder & Decoder – Convert Images…

Image Base64 Encoder & Decoder

Encode images to Base64 or decode Base64 back to images. Free, private, and 100% in your browser — no uploads, no server, no file storage.

Why it matters: Base64 lets you embed images directly in HTML, CSS, JSON, email, and code with zero extra requests. Generate it here instantly.

How to convert an image to Base64 (and back)

1Choose Encoder to turn an image into Base64, or Decoder to turn a string back into an image.
2Pick your output — raw, URL-safe, no-padding, or wrapped — and decide whether to include the data: prefix.
3Copy to clipboard or download as a file. Everything runs locally — nothing is uploaded.

Best settings for this page: Pick the Encoder or Decoder tab, drop in your image or string, and copy or download the result.

All processing runs locally in your browser. Your images and strings are not uploaded to any server.

Base64 basics: size, data URIs, and when to use it

Size trade-off — Base64 inflates binary data by about 33%. It is best for small assets (icons, logos) and single-file pages; for large images, external files with caching are faster.

Data URI — a data URI is raw Base64 prefixed with a MIME type, e.g. data:image/png;base64,.... Include the prefix for HTML/CSS; store raw Base64 for JSON or databases.

URL-safe — RFC 4648 §5 swaps + and / for - and _ and drops padding, making the string safe for URLs, JWTs, and filenames.

Use it for embedding images in code, email, and APIs where an extra HTTP request is worse than the size cost.

Frequently Asked Questions

All Base64 Tools

Encode or decode images to and from Base64 — pick a tool:

Encode

PNG to Base64 JPG to Base64 WebP to Base64 SVG to Base64 GIF to Base64 ICO to Base64 Converter BMP to Base64 AVIF to Base64 TIFF to Base64

Decode

Base64 to Image Decoder Base64 to PNG Decoder Base64 to JPG Decoder Base64 to WebP Decoder Base64 to GIF Decoder Base64 to SVG Decoder Base64 to ICO Decoder Base64 to BMP Decoder

Features

HTML Favicon Embed URL-Safe Base64 Encoder Data URI Generator

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Image Base64 Encoder & Decoder

Output Settings

Image Preview

Base64 Output

Paste Base64 String

Decoded Image

Related reading

Image Base64 Encoder & Decoder

How to convert an image to Base64 (and back)

Base64 basics: size, data URIs, and when to use it

Frequently Asked Questions

All Base64 Tools

Encode

Decode

Features

More Tools

Related Tools