Encode text, decode Base64 strings, or turn files into data URLs — all in your browser. Nothing gets uploaded anywhere.

Input
Empty
Click to Upload Image

PNG, JPG, WebP, SVG supported.

Output

Paste Base64 or plain text on the left to see the result here.

Analysis
0 B
Input Size
0 B
Output Size
0
Characters
0
Lines
Mode Encode
Status Empty
Detected Type None

What you can do with this tool

No sign-up, no uploads, no nonsense. Just Base64 encoding and decoding that works.

Text to Base64

Paste any text and get the encoded output instantly.

File Upload

Drop a file to get its Base64 data URL with correct MIME type.

Image Preview

Decoding an image? You'll see a live preview right here.

Fully Offline

Everything happens in your browser. Zero server calls.

You might also need

Other tools developers frequently use alongside Base64 conversion.

Explore All

Image Compressor

Compress images without losing quality.

Explore Tool

Image Converter

Convert between image formats.

Explore Tool

JSON Formatter

Validate & format JSON.

Explore Tool

Hash Generator

Generate MD5/SHA hashes.

Explore Tool

Decode Base64 Strings

Decode Base64 values while debugging API responses, inspecting configuration, or reading embedded text. The result is generated locally in your browser.

How to decode Base64

  1. Paste the Base64 value.
  2. Select Decode mode.
  3. Review or download the decoded result.

About this tool

Everything runs securely in your browser. Your text, files, and encoded output never hit a server — there's no backend processing involved at all. This makes it safe to use with API keys, tokens, certificates, or any other sensitive data you'd rather not paste into a random website.

Frequently Asked Questions

How can I tell if a string is Base64?

Base64 commonly uses letters, numbers, plus signs, slashes, and optional equals padding.

Why does decoded Base64 look unreadable?

The original data may be binary, compressed, encrypted, or encoded with another character set.