Free Online Encoding Tools
Encode, decode, and transform data instantly with Base64, URL encoding, HTML entities, JWT, and more. No signup required. 100% free and secure.
All Encoding Tools You Need
Comprehensive suite of encoding and decoding utilities for Base64, URL, HTML, JWT, and more.
Base64 Encode
Encode text to Base64 format.
Base64 Decode
Decode Base64 back to text.
Base64 Image
Convert images to Base64 data URIs.
URL Encode
Percent-encode text for URLs.
URL Decode
Decode percent-encoded URL text.
URL Parser
Parse URLs into components.
Query Builder
Build URL query strings from key-value pairs.
HTML Encode
Encode special chars to HTML entities.
HTML Decode
Decode HTML entities back to text.
JWT Decoder
Decode and inspect JWT tokens
JWT Builder
Build JWT tokens from JSON
Unicode Escape
Escape/unescape Unicode sequences
Hex Encode
Encode/decode hexadecimal
ROT13
ROT13 cipher encoder/decoder
Why Choose Our Encoding Tools?
Lightning Fast
Instant encoding/decoding with real-time processing. All processing happens in your browser.
100% Secure
Your data never leaves your browser. Complete privacy guaranteed for sensitive encoding tasks.
Works Everywhere
No installation needed. Works on desktop, tablet, or mobile.
Developer Friendly
RFC-compliant encoding, dark mode, and features that speed up your workflow.
Perfect for Every Use Case
Web Development
- Encode data for URL parameters
- Embed images as Base64 data URIs
- Escape HTML entities for safe display
- Build query strings for APIs
Security & Auth
- Decode JWT tokens for debugging
- Build test JWT tokens
- URL-encode sensitive parameters
- Inspect token claims and expiry
Data Processing
- Convert text to/from Base64
- Encode/decode Unicode sequences
- Convert between hex and text
- Apply ROT13 cipher encoding
Ready to Encode & Decode?
Start using our free encoding tools now. No signup, no limits.
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