URL Encoder/Decoder

Encode or decode URLs and query parameters instantly

Overview

Encode or decode URLs and query parameters instantly

Use the URL Encoder/Decoder when you need the specific operation described above. Choose the input and options that match your intended output, then check the result before using it elsewhere.

Usage Steps

  1. Enter your input value

    Paste the text, token, URL, regex, or hash input the tool expects.

  2. Run the operation locally

    The browser will parse, validate, decode, or transform the content instantly on your device.

  3. Inspect the result

    Review the structured output, highlighted matches, or decoded fields returned by the tool.

  4. Use the output in your workflow

    Copy the result into your app, debugging workflow, or documentation pipeline.

Technical Context

Technical context

Developer utilities interpret input according to browser APIs and web standards. A decoded value is not automatically trusted: validate its structure and do not treat parsing or decoding as cryptographic verification.

Developer utilities interpret input according to browser APIs and web standards. A decoded value is not automatically trusted: validate its structure and do not treat parsing or decoding as cryptographic verification.

Quality checks and limitations

Treat input as untrusted and verify the result in the target runtime. Decoding, formatting, and hashing are not substitutes for authorization or secure key management.

The tool is a focused utility rather than a substitute for reviewing the final file or data in its destination. Keep an unchanged source when the input is important, and use the relevant specialist software for requirements the page does not claim to support.

Frequently Asked Questions

What is URL encoding?

URL encoding replaces unsafe characters with a % followed by two hex digits, making the string safe to use in a URL.

When should I use encodeURIComponent vs encodeURI?

Use encodeURIComponent for individual query values (it encodes more characters). Use encodeURI for full URLs.

What is the difference between a space and a plus sign?

In query strings a space may be sent as +, while percent-encoding sends %20. The tool lets you pick the convention your server expects.

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

No. Encoding and decoding use the browser's built-in escape functions locally, so internal or signed URLs stay on your device.

Why does my decoded string show strange characters?

Percent-sequences must form valid UTF-8 byte pairs. If the input is truncated or double-encoded, decoding fails — check for a missing % or an already-encoded string.

Is it safe to paste production data into these dev tools?

Nothing is transmitted, because every tool runs locally in your browser. Even so, treat live secrets with care and prefer test fixtures over production credentials.

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