Official Free Tool by OpenMax

Free URL Encoder / Decoder

Encode URLs, decode URL strings, parse query parameters, rebuild links, inspect suspicious URLs, and run batch URL conversion. All processing runs locally in your browser.

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EncodeURL encoding

DecodeURL decoding

BatchBatch processing

QueryParameter parsing

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Module 01

URL Encode / Decode

Paste a full URL, a parameter value, plain text, spaces, special characters, or an already encoded string. The tool automatically decides whether to encode or decode it.

Smart detection mode

Processing scope Ready

Input

Output

Input length

Output length

Parameters

Warnings

Module 02

Batch URL Conversion

Process one URL, query string, or text value per line. Smart detection decodes encoded lines and encodes plain lines automatically.

Smart detection mode

Batch Input

Batch Output

Module 03

Query Parameter Parser and URL Rebuilder

Parse query parameters from a URL, edit keys and values, and rebuild the URL with encoded parameters.

URL or Query String

Rebuilt URL

Module 04

Link Inspector

Inspect a URL for spaces, invalid percent encodings, sensitive parameters, redirect parameters, duplicate keys, and encoded fragments.

URL to Inspect

Inspection Report

Paste a URL and click "Inspect This URL" to see the report.

Use Cases

Who can use this URL tool?

Use URL encoding, decoding, query parsing, and link inspection to diagnose and prepare links for real workflows.

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Developers

Debug encoded callback URLs, API parameters, redirect_uri values, and webhook links.

Marketers

Clean campaign links, tracking URLs, UTM links, and shared landing page URLs before publishing.

Website teams

Inspect duplicate parameters, suspicious redirects, sensitive query values, and malformed links.

SaaS teams

Validate callback links, redirect parameters, shared links, and cross-system URL handoffs before release.

Module 05

Local History

Your latest 10 conversions are saved only in this browser localStorage for faster testing and copying.

Official OpenMax Tool

This free URL encoder and decoder by OpenMax covers URL Encode, URL Decode, full URL encoding, URL component encoding, query parameter parsing, batch URL conversion, and link inspection. Visit OpenMax to learn more.

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FAQ

What are URL Encode and URL Decode?

URL Encode converts spaces and special characters into a safe format for URLs. URL Decode converts encoded text back into a readable form.

When should I use full URL mode?

Use full URL mode when the input is an entire link. It keeps structural characters such as http://, ?, &, and = while encoding unsafe characters.

When should I use URL component mode?

Use URL component mode for parameter values such as name, keyword, redirect_uri, or callback_url.

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