Base64decode: online Base64 encoding and decoding in seconds
Base64decode is the dedicated base64decode online encoder and decoder for developers who need fast, accurate conversions. Paste any string, switch between encoding or decoding, and copy the result instantly with a JSON pretty print preview that makes complex payloads easy to audit.
Choose a Conversion Tool
Text Encoder & Decoder
Encode or decode plain text strings to and from Base64 format.
Image to Base64
Convert images to Base64 data URIs for embedding in CSS or HTML.
Base64 to Image
Decode Base64 strings back to viewable images with preview.
File to Base64
Encode any file type to Base64 for API payloads or data transfer.
Base64 to PDF
Decode Base64 PDF documents and view them instantly in browser.
More Coming Soon
Additional conversion tools are being developed.
Why Base64decode?
Base64decode explains Base64 conversion with practical examples so your encoded assets travel through email gateways, JSON payloads, or logging pipelines without corruption.
Online Base64decode app
Base64decode loads from our website and requires an active internet connection. Once the page is open, conversions happen in your browser with no tracking scripts or hidden requests.
JSON pretty print preview
Decode a string and open the preview to see neatly formatted JSON with syntax-aware spacing, giving base64decode online the feel of a built-in inspector for API responses and configuration files.
Built for teams
Share consistent Base64decode workflows with copy-to-clipboard, instant status feedback, and the same UX across desktop or mobile.
FAQs
Does Base64 encoding make my data secure?
Base64 is not an encryption algorithm—it simply represents binary data using a safe character set. Pair it with proper encryption if you need confidentiality.
Can I decode URL-safe Base64 values?
Yes. Replace hyphens with plus signs and underscores with forward slashes before decoding, or paste them directly—Base64decode normalises whitespace automatically.
What limits should I expect?
The browser handles large strings well, but Base64 inflates content size by roughly 33%. Keep that in mind when sharing encoded attachments or logs.