URL Encoder / Decoder —
Fast, Private & Developer-Ready

Encode and decode URLs, query strings, and special characters instantly. Supports encodeURI, encodeURIComponent, RFC 3986, batch processing, UTM builder, tracking remover, and more — entirely in your browser.

  • 100% Private
  • No Server Upload
  • Real-Time
  • Batch Processing
  • Works Offline
%20
UTF-8
RFC
Input
Drop file here
0 chars · 0 bytes
Output
0 chars · 0 bytes

Encoding Standards Comparison

Enter text below to see how it encodes across different standards simultaneously.

Standard Encoded Result Length

Bulk Server Log URL Decoder

Paste server log entries containing encoded URLs. The tool extracts and decodes all URLs found.

Percent-Encoding Reference

Debug Mode

Paste a URL to get detailed byte-level encoding analysis and detect issues.

API URL Formatter

Build and format API URLs with properly encoded parameters.

UTM Campaign URL Builder

Build campaign tracking URLs with UTM parameters. Results are automatically encoded.

Where the traffic comes from
Marketing medium or channel
Your campaign identifier
Paid search keywords
Differentiate ads or links

Encoding Playground

Type any character or text to see how it gets encoded across different methods — learn URL encoding interactively!

Common URL Encodings Reference

Quick Quiz: Test Your URL Encoding Knowledge

How It Works

How URL Encoding Works

URL encoding converts special characters into a format safe for transmission in URLs.

1

Enter Text or URL

Type, paste, drag-and-drop, or import a file containing URLs or text you want to encode or decode.

2

Choose Mode & Action

Select an encoding standard (encodeURIComponent, encodeURI, RFC 3986) and click Encode or Decode.

3

Copy or Export

Results appear instantly. Copy, download as TXT/JSON/CSV, or use developer-ready export formats.

Encoding Guide

encodeURI vs encodeURIComponent vs RFC 3986

Understanding the differences between encoding standards is critical for developers. Here's a complete breakdown:

Character encodeURI() encodeURIComponent() RFC 3986 Form URL
space%20%20%20+
!!!%21%21
##%23%23%23
$$%24%24%24
&&%26%26%26
++%2B%2B%2B
//%2F%2F%2F
::%3A%3A%3A
==%3D%3D%3D
??%3F%3F%3F
@@%40%40%40
~~~~%7E

Use encodeURIComponent

When encoding individual query parameter values, form data, or any text that will be inserted into a URL component.

Use encodeURI

When encoding a complete URL while preserving its structure (protocol, host, path separators, query delimiters).

Use RFC 3986

When strict standard compliance is needed, such as OAuth signatures, API authentication, or when interoperating with non-JavaScript systems.

Why WebEasier

Why Use Our URL Encoder / Decoder?

100% Private

All encoding/decoding runs in your browser. No URL is ever sent to a server. Verify by going offline.

Instant Results

Real-time encoding as you type. Process thousands of URLs in batch mode in milliseconds.

Developer-Ready

Multiple encoding standards, API formatter, JS/JSON export, server log decoder, and debug mode.

Works Everywhere

Fully responsive on desktop, tablet, and mobile. Works offline after first load. No app needed.

FAQ

Frequently Asked Questions

URL encoding (percent-encoding) replaces unsafe or reserved characters with a "%" followed by two hex digits. It's needed because URLs can only contain specific ASCII characters. Spaces, special characters (like &, =, #), and non-ASCII characters (like ñ, ü, 中文) must be encoded for URLs to work correctly across all browsers, servers, and protocols.
encodeURI() encodes a full URL while preserving characters with special URL meaning (like :, /, ?, #, &, =). Use it when you want to encode a complete URL string.

encodeURIComponent() encodes everything except unreserved characters (A-Z, a-z, 0-9, -, _, ., ~). Use it when encoding a single value that will be placed inside a URL component, like a query parameter value.
Yes, 100%. All encoding and decoding happens using JavaScript in your browser. No data is sent to any server. You can verify this by disconnecting from the internet — the tool continues to work. Your URLs and text never leave your device.
Tracking parameters (like utm_source, fbclid, gclid, mc_eid) are added to URLs by marketing platforms to track where clicks came from. While useful for marketers, they make URLs longer, can break caching, reduce privacy, and look unprofessional when shared. The URL Inspector can detect and remove them with one click.
Yes! Enable "Batch" mode and paste multiple URLs, one per line. The tool will encode or decode each line individually. You can also import a TXT or CSV file containing URLs. Results can be exported as TXT, CSV, or JSON.
Double encoding happens when already-encoded characters get encoded again. For example, a space is first encoded to %20, then %20 gets encoded to %2520. This is a common bug that causes 404 errors and broken links. The tool automatically detects and warns about double encoding.
Yes. Once the page is loaded, all functionality works without an internet connection. All processing uses browser-native JavaScript functions. You can bookmark the page and use it anytime, anywhere.
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