URL Decode CSV
Instantly decode URL-encoded values inside CSV data directly in your browser. No uploads, no tracking, no storage - your data never leaves your device.
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About This Tool
URL Decode CSV is a browser-based utility designed to convert percent-encoded strings embedded within CSV files back into human-readable text. It operates entirely locally, ensuring maximum privacy and performance.
Key Benefits
- Processes data locally without any server uploads
- Instant decoding for large CSV datasets
- Simple interface with no learning curve
- Works offline after initial load
- Cross-platform and mobile friendly
Features
- Automatic percent-encoding decoding
- Supports custom CSV delimiters
- Whitespace trimming options
- Clipboard export and CSV download
- Handles malformed encoding safely
Use Cases
- Cleaning analytics export datasets
- Processing encoded API logs
- Fixing encoded database exports
- Preparing datasets for reporting tools
- Decoding marketing tracking URLs
Fun Fact
Percent encoding originally emerged to safely transmit binary and special characters across early internet protocols that only supported ASCII text.
Historical Context
URL encoding became standardized through RFC 1738 and later RFC 3986 to ensure consistent representation of special characters in web addresses, enabling interoperability across browsers, servers, and global networks.