URL Encoder & Decoder
URL Encoding (Percent-encoding) is a mechanism for encoding information in a Uniform Resource Identifier (URI). Characters that are not allowed in a URL (like spaces, emojis, or reserved characters like '?') must be translated into a safe format. For example, a space becomes '%20'. This tool ensures your strings are safe to pass as query parameters in web requests, preventing broken links and API errors.
Input
Encoded Output
URL Encoding/Decoding Encode
URL encode/decode for web parameters
Who Uses This Tool
- • Frontend Developers debugging query parameters
- • API Engineers testing GET requests with special characters
- • Digital Marketers fixing tracking links (UTM params)
- • QA Testers verifying input sanitization
- • SEO Specialists cleaning up permalinks
Key Features
- ✓ Converts unsafe characters to percent-encoded format
- ✓ Decodes encoded URLs back to readable text
- ✓ Compliant with RFC 3986 standards
- ✓ Handles complex symbols and emojis
- ✓ Instant live conversion
- ✓ No server logging for privacy
Frequently Asked Questions
Why do spaces become %20?
URLs cannot contain spaces. The ASCII code for a space is 32 (in decimal) or 20 (in hexadecimal). The '%' acts as an escape character, so '%20' literally means 'Hex ASCII character 20'.
What is the difference between + and %20?
Historically, '+' was used to encode spaces in query strings of URLs (like in form submissions), while '%20' is used in the path component. This tool allows standard percent-encoding which covers all bases.
Does this handle UTF-8 symbols?
Yes. If you encode an emoji or international character (like 'ñ'), it will be converted to its UTF-8 byte sequence in hex, percent-encoded (e.g., 'ñ' becomes '%C3%B1').
Related Tools
HTML Encoder
Convert special characters to HTML entities instantly. Prevent XSS and display code snippets safely by escaping <, >, &, and quotes.
Use ToolJSON Escape
Escape text for JSON strings. Convert quotes and backslashes to safe JSON format instantly. JSON stringify tool.
Use ToolBase64 Encoder
Encode text to Base64 format instantly. Convert binary data or strings to safe ASCII Base64 strings for email, HTML, and APIs. Free, secure, and client-side.
Use Tool