Instant Results
Every character you type triggers an immediate encode/decode. No buttons, no debounce — pure live feedback.
Encode and decode Base64 data instantly with our free online Base64 encoder and decoder. Base64 encoding is essential for transmitting binary data over text-based protocols like HTTP, embedding images in HTML and CSS, storing binary data in JSON, and many other applications in web development and data processing. Our tool makes it effortless — simply type or paste your text, upload a file, or drag and drop an image, and instantly get the Base64-encoded or decoded result. The encoder converts plain text, files, and images to Base64 strings, while the decoder reverses the process back to readable text or downloadable binary files. Real-time preview shows you the output as you type, with automatic detection of whether your input is Base64-encoded or plain text. Copy results to clipboard with one click. Everything runs entirely in your browser — no data is ever uploaded to any server, making it safe for sensitive credentials, tokens, and private files. Free, unlimited, and works offline.
Base64, URL encoding, HTML entities, hex, binary, and SHA hashes — all running entirely in your browser. Instant results, zero privacy risk.
Pick a tab, type or paste — results appear instantly.
No installs, no accounts, no data leaving your browser.
Every character you type triggers an immediate encode/decode. No buttons, no debounce — pure live feedback.
All operations run entirely in your browser. No data is ever transmitted. Safe for passwords, tokens, and sensitive content.
Drag-and-drop any image or file to get its Base64 representation with a full data URI — ready to embed in HTML or CSS.
MD5 (pure JS), SHA-1, SHA-256, SHA-384, SHA-512. Generate cryptographic hashes instantly without any backend.
URL encode/decode, HTML entities, hex, and binary — all in the Extra Tools tab. One tool for every encoding need.
See input vs output byte sizes with animated progress bars. Understand the encoding overhead at a glance.
Encode or decode in three simple steps.
Select Text, Image, File, or Extra Tools from the tab bar above the encoder.
Paste text, drop a file, or type anything. The result appears instantly as you input.
Toggle URL-safe, no-padding, line-wrap, or uppercase for the exact output you need.
One click to copy the output, download as .txt, or generate a data URI for embedding.
Used by developers, designers, and security engineers daily.
Convert images to Base64 data URIs to embed directly in HTML/CSS without separate HTTP requests.
Encode binary data for safe transmission in JSON, XML, or any text-based protocol.
Decode JWT tokens, OAuth credentials, and auth headers to inspect their payload instantly.
Encode/decode secrets stored in environment variables, Kubernetes secrets, or .env files.
Generate SHA-256 checksums to verify file integrity or compare content without running code locally.
Encode attachments and non-ASCII content for safe transmission in email systems using standard Base64.
Everything about Base64 Encoder & Dev Tools.