DevUtilsNow
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Encoding, Hashing & Security

Base64 Encode / Decode

Encode and decode Base64 for text and images, right in your browser.

No upload, ever No account needed Works offline
Input (Text or Base64)
0 characters
Auto-updated
// how to use it

Three steps, no reading required.

Paste your input

Drop text, code, or data into the input pane — from an API response, a file, anywhere.

Pick a mode

Toggle the modes above the output. The result updates instantly as you type.

Copy the result

Grab the output with Copy or Download, or fix the error shown if the input is invalid.

// examples

Try it with a sample.

Sample 1
Hello, DevUtilsNow!
TYPICAL ONLINE TOOL

Upload & hope

  • Sends your input to a server to process it
  • Asks for an account after a few free uses
  • Limits input size on the free tier
DEVUTILSNOW

Runs where you are

  • Processes everything inside your browser tab
  • No account, ever
  • No artificial size limit
// faq

Questions worth answering upfront.

No. Base64 encoding and decoding run entirely in your browser. Nothing you enter is uploaded or stored.

Base64 encodes binary or text data as ASCII characters so it can be safely embedded in URLs, data URIs, JSON, emails and other text-only contexts.

Yes. You can encode an image into a Base64 data URI to embed it directly in HTML or CSS.

No. Base64 is an encoding, not encryption. It is easily reversible and provides no security — never use it to protect sensitive data.

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// related guides

Guides that pair with this tool

All guides →
Aug 28, 2026 · 2 min read Base64 Is Not Encryption: Encoding vs Security Base64 looks scrambled, so people treat it as a way to hide data. It isn't. Here's why Base64 offers zero security, and what to use when you actually need secrecy. Base64 Encode / Decode Aug 28, 2026 · 4 min read Encoding vs Encryption vs Hashing: A Developer's Guide The three are constantly confused. This guide explains what encoding, encryption, and hashing each do, when to use which, and the mistakes that cause real security bugs. Base64 Encode / Decode Aug 8, 2026 · 2 min read What Is Base64 Encoding? A Simple Explanation Base64 explained in plain English — what it is, why developers use it, how it works, and when you should not use it. Base64 Encode / Decode
// reference

Handy reference

All references →
REFERENCE

MIME Types Reference

Common MIME (media) types by category — text, application, image, audio, video and fonts — with the file extension each maps to.

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Last updated: Aug 3, 2026