URL Encoder / Decoder

Encode or decode URLs instantly as you type. Pick encodeURIComponent, encodeURI,...Encode or decode URLs instantly as you type. Pick encodeURIComponent, encodeURI, or Smart-URL, toggle space-as-+ for forms, and copy, 100% in your bro...

100% SecureSecureInstant ProcessingFastNo SignupFree

Updated July 22, 2026

Smart URL(recommended)encodeURIComponentencodeURISpace as + (form)

Text / URL to encode

Encoded

Output appears here as you type...

100% in your browser, nothing is sent to a server.

Common URL-encoded characters

␣

%20

Space

%2B

Plus

%26

Ampersand

%2F

Slash

%3F

Question

%3D

Equals

%23

Hash

%25

Percent

%3A

Colon

%40

At sign

%21

Exclamation

%27

Apostrophe

Quick answer

A URL encoder converts special characters like spaces and ampersands into percent-encoded form so a link transmits safely, and decoding reverses it. YaliKit encodes or decodes as you type using encodeURIComponent, encodeURI, or a Smart-URL mode that preserves structure, plus a space-as-plus toggle for form data. Everything runs 100 percent in your browser, free and with no signup.

SSL Secured

256-bit Encryption

Cloud Processing

Mobile Friendly

Tool Features

Smart URL Encoding - Preserves URL structure while encoding only the necessary parts

Bidirectional - Encode text to URL format or decode URL-encoded strings back to text

Swap Function - Quickly swap input and output to reverse the conversion direction

Character Reference - Built-in reference table showing common URL-encoded characters

One-Click Copy - Copy encoded or decoded results to clipboard with a single click

Sample Data - Load sample URLs to quickly test encoding and decoding behavior

Why Use URL Encoder / Decoder?

Smart URL Mode

Intelligently encodes only what needs encoding while preserving the URL structure. No more broken slashes or colons.

Multiple Modes

Choose between Smart URL, encodeURIComponent, or encodeURI depending on your specific use case and requirements.

Instant Results

Get encoded or decoded results immediately. Copy with one click or swap input/output for quick workflow.

Privacy First

All encoding happens in your browser. Your URLs and data never leave your device or get stored on any server.

Common Uses for URL Encoding

API Development

Encode query parameters and path segments for REST API calls and web service integrations.

URL Building

Safely construct URLs with user-generated content, file names, or international characters.

Debugging

Decode encoded URLs from logs, error messages, or browser dev tools to read the original values.

Web Development

Handle form data, redirect URLs, and deep links that contain special or non-ASCII characters.

How It Works

Select Encoding Mode

Choose "Encode" to convert special characters to URL-safe format, or "Decode" to convert encoded URLs back to readable text.

Choose Encoding Type

Use "Smart URL" to preserve URL structure while encoding parameters, "encodeURIComponent" for query values, or "encodeURI" for minimal encoding.

Enter and Convert

Paste your URL or text, click the convert button, and copy the result. Use the swap button to quickly switch between encoding and decoding.

Tips & Best Practices

Use Smart Mode for Full URLs

Smart URL mode is recommended for encoding complete URLs as it preserves the protocol, host, and path structure.

encodeURIComponent for Parameters

When encoding individual query parameter values, use encodeURIComponent to ensure all special characters are properly encoded.

Double Encoding Warning

Avoid encoding an already-encoded URL, as this causes double encoding (e.g., %20 becomes %2520). Use the decode mode first if unsure.

Frequently Asked Questions

URL encoding converts special characters into a format that can be safely transmitted over the internet. Characters like spaces, ampersands, and question marks have special meanings in URLs, so they must be encoded (e.g., space becomes %20) to avoid breaking the URL structure.

encodeURI is for encoding complete URLs and preserves characters like :, /, ?, and &. encodeURIComponent encodes everything except letters, digits, and - _ . ~. Use encodeURIComponent for query parameter values, and encodeURI for full URLs.

Use URL encoding when building URLs with user input, sending data in query strings, handling file names with special characters, or working with API endpoints that require encoded parameters. It ensures your URLs work correctly across all browsers and servers.

Smart URL mode parses the URL structure and encodes only the parts that need encoding (path segments, query parameter keys and values, hash fragment) while preserving the URL structure characters like protocol, slashes, colons, and ampersands.

Both are valid but for different contexts. In a normal URL path or query, a space becomes %20. That's the default here. In HTML form data (application/x-www-form-urlencoded), a space is encoded as +. Tick the "Space as +" box to switch to form encoding, and when decoding, tick it to treat + as a space. Rule of thumb: %20 for links and paths, + for form submissions.

Switch to Decode mode and paste your string. The readable text appears instantly. %2F becomes /, %26 becomes &, %20 becomes a space, and so on. If your string came from a form and uses + for spaces, tick "Space as +" so those turn back into spaces.

Yes, completely safe. All encoding and decoding happens entirely in your browser using JavaScript. No data is ever sent to any server, stored, or logged. Close the tab and all traces are gone.

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