Encode URLs for safe transmission and decode percent-encoded URLs instantly. Supports RFC 3986 standards, bulk processing, and real-time conversion for web developers and SEO professionals.
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Paste your URL and it will be encoded for safe transmission
The encoded URL will be safe for use in web applications
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URL encoding, also known as percent encoding, is a mechanism for encoding information in URLs by replacing unsafe ASCII characters with a "%" followed by two hexadecimal digits. This process ensures that URLs can be safely transmitted over the internet without being misinterpreted by web servers, browsers, or other systems that handle URL data.
Common characters that require encoding include spaces (encoded as %20), ampersands (%26), question marks (%3F), and non-ASCII characters like accented letters or symbols. URL decoding reverses this process, converting percent-encoded characters back to their original form, making URLs human-readable again.
Our tool supports both RFC 3986 compliant encoding for maximum compatibility and lenient encoding that preserves common URL structure characters. Whether you're a web developer handling form data, an SEO professional working with international URLs, or anyone dealing with web APIs, proper URL encoding and decoding is essential for reliable data transmission.
Choose between Standard RFC 3986 encoding for strict compliance or Lenient mode that preserves URL structure characters like colons, slashes, and question marks for better readability.
Process multiple URLs simultaneously with bulk mode. Each line is encoded or decoded separately, perfect for handling large datasets or multiple API endpoints at once.
Enable live mode for instant encoding/decoding as you type. Debounced processing ensures smooth performance while providing immediate feedback on your URL transformations.
Automatically detects common issues like double-encoded URLs, invalid percent sequences, and malformed input with helpful warnings and suggestions for correction.
Handle form data, query parameters, and API endpoints safely. Encode user input for URL parameters and decode URLs from logs or analytics tools for debugging and analysis.
Work with international URLs containing special characters, analyze encoded URLs from tracking systems, and ensure proper URL structure for search engine optimization and analytics.
Create properly encoded tracking URLs for campaigns, decode analytics URLs for reporting, and handle affiliate links with special characters or parameters safely.
Decode URLs from server logs for analysis, encode configuration parameters for web services, and troubleshoot URL-related issues in web applications and APIs.
When submitting forms with special characters, spaces, or international text, proper encoding ensures data integrity. Encode form values before adding them to query strings or POST data.
REST APIs often require encoded parameters, especially when passing complex data or search queries. Proper encoding prevents API errors and ensures accurate data transmission.
URLs containing non-ASCII characters like accented letters, Chinese characters, or Arabic text must be encoded for proper browser and server handling across different systems.
Our standard encoding mode follows RFC 3986 specifications, the current standard for URI syntax. This ensures maximum compatibility with web servers, browsers, and APIs that expect strict URL encoding compliance.
Proper URL encoding prevents injection attacks and ensures data integrity. Always encode user input before including it in URLs, and validate decoded URLs before processing to prevent security vulnerabilities.
Supports full UTF-8 character encoding, handling international characters, emojis, and special symbols correctly. The tool automatically detects and processes multi-byte characters for accurate encoding and decoding.
Use Standard mode for query parameters, form data, and API calls where strict encoding is required. Use Lenient mode for complete URLs that need to remain readable while preserving structure.
Be careful not to encode already encoded URLs. Our tool detects potential double-encoding and provides warnings to help you avoid this common mistake that can break URLs.
Always test encoded URLs in your target environment. Different systems may have varying levels of encoding strictness, so validation in the actual use case is important.
Select Encode or Decode tab, then choose Standard or Lenient encoding mode based on your needs. Enable Live mode for real-time processing or Bulk mode for multiple URLs.
Paste your URL(s) in the input area. For bulk processing, enter one URL per line. The tool will automatically detect and warn about potential issues.
Click the process button or let live mode handle it automatically. Copy the results, swap input/output for reverse processing, or clear to start over.