Encode / Decode

URL Encode / Decode

Percent-encode a string for safe use in a URL, or decode an encoded URL back to plain text. Two scopes: Component mode encodes everything (for query parameter values), and Full URI mode preserves URL structural characters like :/?#&= so you can encode an entire URL. Auto mode detects whether your input is already encoded and decodes it.

URL Encode/Decode — Percent-encode and decode URL strings

What it does

  • ▸Encodes text using percent-encoding (RFC 3986)
  • ▸Component mode encodes all reserved characters — use for individual query params
  • ▸Full URI mode preserves :/?#&= so the URL structure stays intact
  • ▸Auto mode detects encoded vs plain text and picks the right direction
  • ▸Optional + to space conversion for decoding form-urlencoded data

Use cases

  • ▸Encoding a search query or filter value before appending it to a URL
  • ▸Decoding a percent-encoded URL from a log file or analytics tool
  • ▸Debugging double-encoding issues where a URL got encoded twice
  • ▸Preparing a URL with special characters for use in an API request

How it works

1

Paste your text or URL into the input pane

2

Choose Encode, Decode, or Auto mode

3

Select Component or Full URI scope depending on what you're encoding

4

The result appears instantly in the output pane

Frequently asked questions

1When should I use Component vs Full URI mode?

Use Component when encoding a single value that goes into a query parameter — it encodes everything including & and = so they don't conflict with the URL structure. Use Full URI when you have a complete URL that needs encoding but should remain a valid URL.

2What does the + to space option do?

In application/x-www-form-urlencoded data (like HTML form submissions), spaces are encoded as + instead of %20. Toggle this option when decoding form data so + characters are converted to spaces.

3Can it handle already-encoded URLs?

Yes. Auto mode checks if your input contains percent-encoded sequences (%XX) and decodes it. If there are no encoded sequences, it encodes the input instead. This is useful when you're not sure if a URL is already encoded.

Related tools

URL Parser — Break a URL into components and query parameters

URL Parser

Break a URL into components and query parameters

Base64 String Encode/Decode — Encode and decode Base64 strings (unicode-safe)

Base64 String Encode/Decode

Encode and decode Base64 strings (unicode-safe)

HTML Entity Encode/Decode — Escape and unescape HTML entities

HTML Entity Encode/Decode

Escape and unescape HTML entities

Backslash Escape/Unescape — Escape or unescape backslash sequences (\n, \t, \", \uXXXX…)

Backslash Escape/Unescape

Escape or unescape backslash sequences (\n, \t, \", \uXXXX…)

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