Online Base64 Encoder & Decoder

Encode plain text to Base64 or decode Base64 strings to readable text with robust UTF-8 and Unicode emoji handling.

100% Client-Side — your text never leaves this browser. Works offline. How it works

0 lines • 0 bytes
Results update as you type
0Words
0Characters
0Chars (No Spaces)
0Sentences
0Paragraphs
0.0 minReading Time
0.0 minSpeaking Time
Your text
Counts update as you type
1

Social media limits

Top keywords

Type or paste text to see keyword frequency
About this tool

About the Base64 Encode / Decode

Encode and decode Base64 strings online with full UTF-8 and emoji support. URL-safe Base64 mode with zero data sent to servers.

Full UTF-8 & Emoji Support

Uses standard TextEncoder/TextDecoder to prevent common garbled character bugs with international text.

URL-Safe Base64 Mode

Replaces + and / with - and _ and trims padding = characters for safe URL transmission.

Instant Bidirectional Toggle

Switch seamlessly between Encode mode and Decode mode with one click.

Zero Latency & 100% Privacy

Safely decode credentials, JWT payloads, and API tokens without external network exposure.

FAQ

Common questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that represents binary or text data in an ASCII string format using 64 printable characters.

Why do other online Base64 tools break on emojis or non-English text?

Standard JavaScript btoa() only supports ASCII (Latin-1). SnipFerry uses modern UTF-8 byte encoding so emojis and accents decode flawlessly.

What is URL-Safe Base64?

Standard Base64 contains + and / which have special meanings in URLs. URL-safe Base64 replaces them with - and _ to prevent routing errors.

Is it safe to decode private tokens here?

Yes, 100%. Data never leaves your computer; all encoding/decoding is performed client-side.

Keep going

More text & developer tools

Word Counter Count words, characters, sentences, reading time, and keyword density in real time with 100% client-side privacy.
→
Character Counter Count exact characters with/without spaces and track character limits for Twitter, LinkedIn, Instagram, and SMS.
→
Case Converter Transform text into UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, and PascalCase instantly.
→
Remove Duplicate Lines Clean lists, email databases, and log files by stripping duplicate lines while preserving original line order.
→
Sort Lines Sort lists alphabetically, numerically, by length, or randomize order with natural number sorting support.
→
Text Diff Find differences between two versions of text with visual color-coded additions, deletions, and inline modifications.
→
Find & Replace Search and replace words, phrases, or patterns across text with live match previews and powerful RegEx support.
→
Remove Extra Spaces Normalize messy text by collapsing multiple consecutive spaces, trimming line edges, and removing blank empty lines.
→
Slug Generator Turn titles, headlines, and product names into clean, URL-friendly slugs for WordPress, Next.js, Ghost, and SEO routes.
→
Lorem Ipsum Generator Generate clean placeholder dummy text for web design mockups, wireframes, prototypes, and typesetting.
→
Text Reverser Reverse entire text strings, reverse word order, invert lines, or flip characters upside-down using Unicode.
→
URL Encode / Decode Safely encode special characters for URL query strings, or decode percent-encoded URLs back into readable text.
→
HTML Encode / Decode Escape HTML special characters to prevent XSS injection, or decode HTML entities back into clean readable text.
→
UUID Generator Generate cryptographically secure random UUID v4 identifiers in bulk with customizable casing and formatting.
→
JWT Decoder Decode JSON Web Tokens (JWT) client-side. Inspect algorithm, payload claims, timestamps, and validity status with 100% privacy.
→
Unix Timestamp Convert Unix epoch timestamps to human readable dates (UTC, Local, ISO 8601) in real time with live second ticker.
→
Cron Parser Translate crontab schedules into plain English sentences and calculate future execution timestamps instantly.
→
Text Repeater Duplicate any string, phrase, emoji, or message multiple times with custom delimiters and line numbering.
→
Hash Generator Compute MD5, SHA-1, SHA-256, and SHA-512 hashes simultaneously in real time with 100% client-side privacy.
→
Password Generator Create ultra-strong, cryptographically secure passwords and passphrases with custom length, symbols, and entropy ratings.
→
Regex Tester Test JavaScript regular expressions with real-time match highlighting, capture groups, and flag controls.
→
Markdown Preview Write GitHub Flavored Markdown with instant side-by-side HTML preview, table formatting, and export options.
→