Base64 Converter

Encode and decode text or images to Base64 format.

Encode and decode text, images, or files to Base64 format. Essential for debugging data URIs and Auth headers.

Why This Tool Exists

Base64 is the duct tape of the internet. It turns binary data (images, PDFs) into safe text strings for email and HTTP transmission. Developers encounter it constantly—in Basic Auth headers, JWT payloads, and data URIs. However, decoding these strings is risky. You often decode "state" parameters or session tokens. Doing this on a server-based tool logs your tokens. PrivaQuickTools Base64 Converter runs the `btoa()` and `atob()` functions locally. Your secrets are decoded on your screen and nowhere else.
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I needed to decode a Kubernetes secret to check a database password. I almost pasted it into a random "Free Base64 Decode" site before realizing that site could just save my password. I built this to have a safe place for that task.

Key Capabilities

Core features that make this tool powerful.

Privacy First: Files never leave your device.

Instant: No upload or download wait times.

Secure: Local processing guarantees data safety.

Free: No subscriptions or hidden fees.

How It Works

Understanding the processing logic.

A bidirectional encoder/decoder: - **Text:** Convert strings with support for UTF-8 characters. - **Files:** Drag and drop an image to get the data:image/png;base64 string. - **Safety:** Input is never sent over the network.

Accuracy & Reliability

Standard browser-based processing logic.

Who Is This For?

Security Engineers

Decode obfuscated malware strings or auth tokens.

Frontend Devs

Convert small icons to Base64 to embed them directly in CSS.

Common Mysteries & Fixes

Wait, this isn't encryption

Base64 is NOT encryption. It is an encoding. Anyone can decode it. Do not use it to 'hide' passwords.

Padding Errors

Base64 strings must have length divisible by 4. If you get an error, check if you missed the '=' padding characters at the end.

Real-World Scenarios

Quick Processing

Process files without verifying server security.

Offline Work

Use the tool without an internet connection.

Why Choose PrivaQuickTools

FeaturePrivaQuickToolsOthers
Privacy100% LocalCloud Upload
CostFreeFreemium
SpeedInstantSlow Uploads
RegistrationNoneRequired

Privacy & Security Guaranteed

We do not store, view, or upload your files. All processing happens in your browser's memory. When you close the tab, all data is wiped from memory.

Good to Know

Large files depends on your device RAM. Processing massive video/PDFs may be slower on mobile devices.

Benefits

  • Local ProcessingData stays on your machine, always.
  • No InstallationWorks instantly in your browser.
  • Zero Cost100% free and open.
  • UnlimitedNo artificial limits on file count.

When Not To Use

While we aim for perfection, browser-based tools have limits. This tool might not be the best fit for:

  • Extremely large files (e.g., video over 2GB)
  • Batch processing thousands of files at once
  • Workflows requiring server-side collaboration or cloud storage

Frequently Asked Questions

Common questions about this tool.

Yes. Drop an image file, and we will generate the Data URI for you.
Yes, we handle UTF-8 encoding properly so emojis don't break the output.