Base64 Encoder / Decoder
Encode & Decode Base64 Strings Instantly – Free Online
Encode text to Base64 or decode Base64 strings back to plain text. Supports UTF-8, Unicode, and emoji. Secure browser-based processing. Free, instant, no signup.
Base64 Encoder & Decoder — Encode Text and Files Free Online
Encode text or files to Base64 and decode Base64 strings back to readable text instantly. Essential for embedding images in CSS/HTML, working with APIs and data transmission.
Common Use Cases for Base64 Encoder
Encode credentials and binary data for HTTP Basic Auth and API payloads.
Convert small images to Base64 for inline embedding in CSS and HTML.
Understand MIME Base64 encoding used for email attachments.
Decode JWT tokens and OAuth credentials encoded in Base64 format.
Embed fonts, icons and small images directly in stylesheets without extra HTTP requests.
Decode Base64 encoded API responses to inspect the actual data content.
How It Works
3 simple stepsSelect Mode
Choose Encode (text→Base64) or Decode (Base64→text).
Enter Input
Type or paste your text or Base64 string.
Copy Result
Click Encode/Decode and copy the output.
Why Use QuickToolify Base64 Tool?
Encode & Decode
Both encoding and decoding in one tool with easy mode switching.
Unicode Support
Handles UTF-8, emojis, and international characters correctly.
Error Detection
Clear error messages for invalid Base64 input.
100% Private
All processing in your browser. Zero data sent to server.
Swap Feature
One-click swap to reverse encode/decode direction.
Free Forever
No signup, no account, always free.
Frequently Asked Questions
Your Privacy, Our Priority
We don't store any of your data or files. All files are instantly deleted after your use completes.