Decoding Web Traffic & Query Strings
URL decoding allows engineers, analysts, and QA teams to inspect UTM tracking parameters, webhook payloads, and redirect URLs in clean human-readable form.
TOOL / DEVELOPER
URL Decoder
Decode percent-encoded URL strings back to readable plain text online.
BROWSER·.txt→.txt
Processed 100% in your browser. Your files are never uploaded to any server.
Max 20 MBReady for file selection
Select files
Drop files here
01 / WORKFLOW
How to use / URL Decoder
01
Select Encoded File
Upload the text file with percent-encoded URL strings.
02
Decode URL
The engine translates hex byte codes to original characters.
03
Download
Save the decoded text file.
02 / CAPABILITIES
Key Features & Capabilities
Converts percent-encoded hex triplets (%20, %2F, etc.) to original characters
Full UTF-8 sequence decoding support
Instant in-browser transformation
Private and safe for confidential query parameters
03 / FORMAT
Supported Formats
Input Formats
.txt
Output Format
.txt04 / REFERENCE
About this tool
05 / FAQ
Frequently Asked Questions
Everything you need to know about using this tool. URL Decoder.
Can this decode multi-byte international UTF-8 characters?
Yes, multi-byte sequences such as %E2%9C%93 are cleanly decoded back to their original UTF-8 characters (like ✓).
What happens if a percent sign is followed by invalid hex digits?
The decoder flags malformed URI sequences with helpful error diagnostics.
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