Image Decoder Online

Decode image data online from Base64 strings, data URLs, and byte arrays.
Preview decoded JPG, PNG, GIF, BMP, TIFF, SVG, WEBP, AVIF, and ICO images instantly.
The image decoder works locally in your browser, so your data is not uploaded.
Drop a Base64 text file or pasted text here
Generated Image will appear here

Paste encoded image data to decode and preview an image. Maximum input size is 10 MB. Recent results store metadata only.

Metadata only

Recent decoded images

For privacy and browser performance, history stores image details only — not full Base64 data.

No decoded image metadata yet. Convert an image to see format, dimensions, size and timestamp here. Maximum input size is 10 MB.

Ready-to-use examples

Use Base64 images in your project

Preview a decoded image or copy a practical snippet for HTML and CSS.

No upload required
Output preview Decoded
Decoded Base64 apple example

The Base64 string is decoded locally and rendered as an image.

Base64 source
Example data URL · safe to test
100% Private

All conversions happen locally in your browser.

Super Fast

Instant conversion with zero waiting time.

Secure

Your data never leaves your device.

Developer Friendly

Perfect for developers, designers and testers.

Image Decoder Online Guide

This image decoder converts encoded image data into a real image preview. It works with Base64 image strings, full data URLs, and common byte array formats.

Use it to debug encoded images from APIs, databases, logs, browser storage, JavaScript code, or HTML/CSS snippets.

How to convert Base64 to image

  1. Paste your Base64 string or data URL into the input field.
  2. Click “Convert String to Image”.
  3. Preview the generated image and download the result.

Common use cases

  • Debug Base64 images from APIs.
  • Test HTML image data URLs.
  • Extract images from JSON payloads.
  • Validate embedded CSS background images.
Raw byte workflow

Open Bytes to Image when your image is stored as raw decimal bytes, hexadecimal values, Uint8Array output or Buffer data rather than a Base64 string.

Convert bytes to image
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Base64 Image FAQ

Is my image uploaded to a server?

No. The conversion runs locally in your browser, so the image data stays on your device.

Can I paste a full data URL?

Yes. You can paste either a plain Base64 string or a value like data:image/png;base64,...

Why does the tool show an error?

The most common reasons are invalid Base64 text, unsupported image data, or a string that was copied only partially.

Which image formats are supported?

JPG, JPEG, PNG, GIF, BMP, TIFF, SVG, WEBP, AVIF, and ICO are supported.

Should I use Base64 images on production websites?

Small icons can be fine, but large images are usually better served as separate optimized files for better caching and page speed.