Base64 to Image

Convert Base64 to an image online in one click. Paste a Base64 string or full data URL and download a real image file (PNG, JPG/JPEG, GIF, WebP, SVG, ICO, BMP). This Base64 to image converter is perfect for Base64 image decoder needs like “Base64 string to PNG,” “Base64 to JPG online,” and “decode data URL to image file.”

What is “Base64 to Image”?

Base64 to image decoding turns ASCII-safe Base64 text back into the original binary pixels. Developers often embed small icons or screenshots as data:image/png;base64,... in HTML/CSS or JSON. This tool reverses that, letting you save the Base64-encoded picture as a real image—handy for bug reports, design assets, or migrating away from inlined data URIs.

How to use the converter

1. Paste your Base64 string. We accept both raw Base64 and full data URLs like data:image/jpeg;base64,/9j/4AAQSkZJRgABA....
2. Choose output format (auto-detected from the data URL’s MIME type, or force PNG/JPG if you prefer).
3. Click Decode to convert Base64 to image and download the file.

When should you use it?

• Extract embedded images: Turn Base64 data URIs into standalone PNG/JPG/GIF/WebP/SVG files.
• API & webhook debugging: Convert “Base64 image string” payloads to view the actual image.
• Email/MIME: Save Base64-encoded signatures, logos, or attachments as files.
• Design handoff: Quickly get a Base64 screenshot to PNG for editing or annotation.

Who is this for?

• Developers & DevOps needing a fast Base64 image decoder for logs and JSON.
• Designers & marketers exporting inlined assets (convert Base64 to image online for brand kits).
• QA & support teams turning user-provided Base64 strings into viewable files.

Best practices & caveats

• Header matters: If you have a full data URL, we’ll read the MIME type (e.g., image/png). If you paste raw Base64, select the format to avoid the wrong extension.
• Padding & line breaks: Fix “length not multiple of 4” by re-adding = padding and stripping whitespace. Many “Base64 to image online” failures are padding issues.
• SVG & text-based images: SVGs decode to text/XML; we’ll save them with .svg and proper UTF-8.
• Security: Treat untrusted images carefully. Don’t open suspicious files from unknown sources.
• Large assets: Base64 adds ~33% size overhead. Prefer real files for production delivery.

Examples

Data URL example

Input:
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA...

Tip:
Split on the first comma and decode only the right side:
mime = "image/png"
b64  = "iVBORw0KGgoAAAANSUhEUgAA..."

Command-line references (optional)

# macOS / Linux – save Base64 to PNG
base64 -d image.b64 > output.png

# OpenSSL (all platforms)
openssl base64 -d -in image.b64 -out output.jpg

# Windows PowerShell – write a Base64 string to a file
$bytes = [Convert]::FromBase64String((Get-Content image.b64 -Raw))
[IO.File]::WriteAllBytes("output.webp", $bytes)

Programmatic decode

# Python
import base64, re
data = open("image.b64","r").read()
b64 = data.split(",",1)[-1]  # handle data URLs
open("output.png","wb").write(base64.b64decode(b64))

// Node.js
const fs = require('fs');
const input = fs.readFileSync('image.b64','utf8');
const b64 = input.split(',', 2).pop(); // handle data URLs
fs.writeFileSync('output.png', Buffer.from(b64, 'base64'));

Troubleshooting

“Invalid Base64” or weird colors

Remove whitespace/line breaks, ensure proper = padding, and confirm you’re not double-encoding. If the MIME type is wrong, the OS previewer may render oddly—try forcing PNG/JPG.

“Decoded file won’t open”

Make sure you decoded only the part after the comma in a data URL. Also verify that the Base64 string actually represents an image (not a PDF or text).