Base64 Encoder & Decoder

Encode text, images, and files to Base64 — or decode Base64 back to original content. 100% free, private, and ad-free.

✓ 100% Ad-Free ✓ Privacy-First ✓ No Signup ✓ Zero Cookies

Base64 Encoder

Encode text strings or files to Base64 format

Base64 Decoder

Decode Base64 back to original text or files

Text to Base64

Convert plain text and UTF-8 strings to Base64

Base64 to Text

Decode Base64 to readable text strings

Image to Base64

Convert images to Base64 data URIs for embedding

File to Base64

Encode any file (PDF, ZIP, etc.) to Base64

Base64 to File

Convert Base64 data back to downloadable files

URL-Safe Base64

Encode for URLs, tokens, and query parameters

What is Base64?

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It uses a set of 64 characters (A-Z, a-z, 0-9, +, /) to represent data, making it safe for transmission over text-based protocols like email, JSON, and XML.

Base64 encoding increases data size by approximately 33%, but it enables binary data — like images, PDFs, or cryptographic keys — to be safely transmitted in text format.

Frequently Asked Questions

Is Base64 encryption?

No. Base64 is an encoding scheme, not encryption. It provides no security — anyone can decode Base64 data. For secure data transmission, use encryption like AES, then optionally Base64 encode the encrypted result.

Is my data private when using these tools?

Yes. All encoding and decoding happens locally in your browser. Your text and files never leave your device, are never sent to any server, and are never stored. We use zero cookies, zero tracking, and zero ads.

Why is my Base64 output larger than the input?

Base64 encodes 6 bits per character (compared to 8 bits in original binary), resulting in approximately 33% size increase. This is normal and expected for all Base64 encodings.

What is URL-safe Base64?

URL-safe Base64 replaces + with - and / with _ to make the encoded output safe for use in URLs, filenames, and web tokens like JWT. This avoids issues with + and / being interpreted as special URL characters.

Why are these tools free and ad-free?

As a professional IT solutions company, our business relies on enterprise services, not ad revenue. Because these tools process everything locally on your device, they cost us virtually nothing to host. This allows us to provide high-quality, ad-free utilities without monetizing your data.

Your Privacy is Protected

All Base64 encoding and decoding happens entirely in your browser. Your data never leaves your device, is never sent to any server, and is never stored. We use zero cookies, zero tracking, and zero ads.