Base64 Text Encoder & Decoder

Encode plain text into Base64 or decode Base64 data back to readable text with full UTF-8 Unicode support.

Plain Text 0 chars

Base64 Encoded 0 chars

Copied to clipboard!

Encode and Decode Base64 Strings Online

Base64 is a widely used binary-to-text encoding scheme that represents sequences of 8-bit bytes using a set of 64 printable ASCII characters (A–Z, a–z, 0–9, +, and /, with = for padding). It enables safe transmission of text, files, credentials, and data across network protocols that were originally designed strictly for 7-bit ASCII text (such as email systems via MIME and legacy HTTP protocols).

Seamless Unicode (UTF-8) Support

Standard browser JavaScript functions like btoa() and atob() fail with a Character Out of Range error whenever text contains non-ASCII characters. Our tool uses full UTF-8 byte serialization, meaning you can reliably encode and decode text in any language — including accented letters (é, ü), Cyrillic, Chinese, Japanese, Arabic, and modern emojis (🚀, 🎉) — without data corruption.

Common Uses of Base64 Encoding

Inline Data URIs: Embed small icons, fonts, or images directly into HTML, SVG, or CSS stylesheets without triggering extra HTTP requests (see our Image to Data URI converter).
API Authentication Headers: Encode HTTP Basic Auth credentials (in the format username:password) into authorization headers.
Webhooks & Web Tokens: Decode payload segments from JSON Web Tokens (JWT) or inspect Base64-encoded webhook notifications.
Email Attachments: MIME formats automatically convert file attachments into Base64 blocks to prevent corruption during SMTP transit.

Note: Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string instantly. Never use Base64 alone to protect passwords or confidential data without cryptographic encryption.

Related Text & Encoding Tools

Check out other online encoders and converters on ezgif:

URL Encode & Decode — percent-encode special characters for URLs and query strings.
HTML Entities Encoder — escape special characters to named and numeric HTML entities.
Image to Data URI — convert image files directly into Base64 Data URI strings.
Find and Replace — search and replace text strings or regex patterns.
Character Counter — measure character length and byte size changes.