ToolsPopper
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URL Encoder / Decoder

Percent-encode or decode URLs and query strings safely.

What is the URL Encoder / Decoder?

ToolsPopper's URL tool percent-encodes special characters for safe use in URLs and query strings, or decodes encoded text back to readable form. Switch between Encode and Decode, paste a link fragment or full URL, and get instant output — essential when building fetch calls, fixing broken query params, or reading encoded redirect links.

Conversion uses encodeURIComponent and decodeURIComponent in your browser. Nothing is transmitted to ToolsPopper servers.

When to encode or decode URLs

  • Query string building — escape spaces, ampersands, and unicode in GET parameters
  • API development — verify encoded path and search segments before requests
  • Debugging redirects — decode opaque return URLs from OAuth or payment flows
  • Email and CMS links — fix double-encoded or broken href values

How URL encoding works here

Encode mode replaces reserved and non-ASCII characters with percent-escaped sequences suitable for URI components. Decode mode reverses valid escape sequences to plain text. Invalid decode input surfaces an error message instead of silent corruption.

How to encode or decode a URL

  1. Choose Encode or Decode mode.
  2. Paste the URL, query string, or text fragment in the input box.
  3. Click Encode or Decode to run the conversion.
  4. Copy the result and repeat with no daily cap.

ToolsPopper vs URL Encode/Decode sites and browser devtools

  • Dedicated encode/decode UI — faster than typing in a console for quick fixes
  • 100% private — sensitive tokens in URLs never hit a remote server
  • Unlimited free use — no length limit or signup wall
  • Clear errors on bad input — malformed decode strings show immediately
  • Mobile-friendly — fix links from a phone without opening devtools

Frequently Asked Questions

Common questions about URL Encoder / Decoder

How do I URL encode a string online for free?

Open ToolsPopper URL Encoder / Decoder, select Encode, paste your text or query value, click Encode, and copy the percent-encoded result.

How do I decode a percent-encoded URL?

Switch to Decode mode, paste the encoded URL or query string, click Decode, and read the plain text output.

Is my URL sent to a server when I encode it?

No. Encoding and decoding run locally in your browser. ToolsPopper never logs your links or tokens.

What is the difference between URL encode and URI encode?

This tool uses encodeURIComponent, which escapes characters for query parameters and path segments. It is the standard choice for individual parameter values.

Is there a length limit for URL encoding?

ToolsPopper does not cap input size. Very long URLs are limited only by browser memory.

Why does decode fail on my string?

Decode requires valid percent-encoding (e.g. %20 for space). Malformed sequences, stray % signs, or truncated escapes will trigger an error.

Can I encode spaces and special characters in query strings?

Yes. Encode converts spaces to %20 and escapes &, =, +, and other reserved characters so values are safe inside query parameters.

Is the URL encoder free with unlimited use?

Yes. Encode and decode as many strings as you need — no account, payment, or daily limit.