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Developer Tools

Base64 Encoder/Decoder

Encode text and files to Base64 format or decode Base64 strings back to readable text. Supports images with live preview and data URL generation — everything runs locally in your browser.

Free · No sign‑up Added Jun 2026

Base64 Converter

About Base64 Encoder/Decoder

Base64 is a way to write binary data or text using only letters, digits, + and /, so it can travel safely through systems that only handle text, such as emails, JSON and URLs. This tool encodes text to Base64 and decodes it back, and it can also encode a file, such as an image, and decode Base64 or a data URL back to a file.

Text is handled as UTF-8, so accented letters, Arabic, Chinese and emoji encode correctly. When you decode, it also accepts URL-safe Base64, which uses - and _ instead of + and /, ignores line breaks, and does not need the trailing = padding. For images it shows a preview and can give you a ready-to-use data URL.

Base64 is an encoding, not encryption. Anyone can decode it, so it does not protect passwords or secrets. It also makes data about a third larger. Everything is done in your browser, so your text and files are not uploaded.

Who uses it and when

Embedding images

Turn a small image into a data URL for HTML or CSS.

Reading encoded values

Decode a Base64 string from an API or config.

Basic auth and headers

Encode or decode credentials in a test header.

Files and text

Convert both text and files in one tool.

Why use this Base64 Encoder/Decoder

Encode and decode Base64 for text and files.

Both directions

Encode and decode text or files.

UTF-8 and URL-safe

Any language, and URL-safe input accepted.

Browser-only

Nothing is uploaded.

How it works

Choose text or file

Pick the mode.

Encode or decode

Paste the text, upload a file, or paste Base64.

Copy or download

Take the result.

Frequently asked questions

Is Base64 encryption?

No. It is a reversible encoding that anyone can decode.

Why does decoding fail?

The text may not be valid Base64, or it may be incomplete. Remove extra characters and try again.

Does it support URL-safe Base64?

Yes, when decoding. - and _ are accepted, and missing padding is fine.

Are my files uploaded?

No. Files are converted in your browser.

Overview

What Is Base64 Encoder/Decoder?

Encode and decode text and files to/from Base64 format instantly. Support for images with preview. Perfect for data encoding and API development

User Guide

How To Use Base64 Encoder/Decoder

  1. 1 Open the Base64 Encoder/Decoder interface in your desktop or mobile browser.
  2. 2 Input or upload your source data, file, or parameters into the designated workspace fields.
  3. 3 Adjust any optional configuration settings or conversion toggles according to your requirements.
  4. 4 Click the primary action button to generate your output instantly.
  5. 5 Copy the resulting text, code snippet, or formatted file directly to your clipboard or local device.
Capabilities

Key Features of Base64 Encoder/Decoder

100% Free & Unlimited Usage

No registration, subscriptions, or hidden limits. Process as many files or items as you need.

Privacy-Focused Processing

All operations execute locally in your client web browser. Your sensitive files and data never touch external servers.

Cross-Platform Compatibility

Fully responsive design optimized for desktop workstations, laptops, tablets, and smartphone displays.

Instant Real-Time Output

Zero server queuing delays. Results are calculated and rendered immediately upon user input.

Client-Side Privacy & Security Guarantee

Your privacy is our priority. Base64 Encoder/Decoder executes processing entirely within your browser environment. Your input data, text, files, and credentials are never transmitted to external servers or stored in remote databases.

FAQ

Frequently Asked Questions

What is Base64 Encoder/Decoder?
Encode and decode text and files to/from Base64 format instantly. Support for images with preview. Perfect for data encoding and API development
Is Base64 Encoder/Decoder free to use?
Yes, Base64 Encoder/Decoder is completely free. There are no hidden charges, no subscription, and no credit card required. Just open the tool and start using it instantly.
Do I need to create an account to use Base64 Encoder/Decoder?
No account or signup is required. You can use Base64 Encoder/Decoder immediately without registering. Just visit the page and the tool is ready to use.
Does Base64 Encoder/Decoder work on mobile and tablet?
Yes, Base64 Encoder/Decoder is fully responsive and works on all modern devices including smartphones, tablets, and desktops. Any up-to-date browser is supported.
Does Base64 Encoder/Decoder process my data on a server?
No. Base64 Encoder/Decoder runs entirely in your browser using JavaScript. Your code and data are never sent to or stored on any server, keeping your work private and secure.
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