Free, browser-based utilities for everyday developer workflows

URL Encode Query Strings

Encode and decode query strings safely for tracking links and APIs.

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Open URL Encoder with a ready-to-run example.

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When you need this
  • You need to safely encode query strings for redirects.
  • You are troubleshooting encoded URLs from logs.
  • You want to encode spaces and special characters correctly.
How to do it with Daily Developer Tools
  • Paste the raw text or query string into the URL Encoder.
  • Click Encode or Decode depending on your need.
  • Copy the result into your app or request.
Tips / common pitfalls
  • Encode full query strings when you need to pass them as a single value.
  • Decode before editing to avoid double-encoding errors.
  • Use the URL Parser to inspect parameters after decoding.
Examples & test data

Encode a query string

Mode: encode
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Input example
email=alex@example.com&notes=needs follow up
Expected output
email%3Dalex%40example.com%26notes%3Dneeds%20follow%20up

Decode an encoded value

Mode: decode
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Input example
utm_source%3Dnewsletter%26utm_campaign%3Dwinter%2520sale
Expected output
utm_source=newsletter&utm_campaign=winter%20sale
FAQ
What does URL encoding do?

It replaces reserved characters with %xx escapes so URLs remain valid.

Why do I see %20 instead of spaces?

%20 is the encoded form of a space character.

Can I decode + signs?

Yes. The tool normalizes + to spaces when decoding.

Does the tool store my input?

No. Everything runs locally in your browser.

Related tools
URL Parser Encoding Suite HTTP Headers Parser

i Privacy-first: everything runs locally in your browser. No uploads, no tracking of your inputs.