URL Encoder Decoder

URL Encoder Decoder is a free online tool that encode or decode URLs instantly. Convert special characters to percent-encoded format or decode encoded URLs back to readable text. 100% client-side. Analyze and process URLs directly in your browser with.

URL Encoder Decoder workspace and controls

What is URL Encoder / Decoder | Rune

URL Encoder / Decoder converts special characters in URLs to percent-encoded format (encoding) or converts encoded URLs back to human-readable text (decoding). Supports both full URL encoding with encodeURI and component encoding with encodeURIComponent for query parameter values.

All processing happens entirely in your browser, no data is ever sent to a server. RFC 3986 compliant encoding ensures your URLs are properly formatted for web transmission. Essential for web developers, SEO specialists, and digital marketers who work with URLs and web infrastructure. Analyzes results in real time with detailed reports and actionable insights for your web properties.

RFC 3986
Compliant
Instant
Processing
100%
Client-Side
Free
Forever

What Makes URL Encoder / Decoder on Rune Different

Online alternatives for url encoder / decoder often make simple tasks feel heavier than they need to be. URL Encoder / Decoder on Rune keeps the workflow direct, explains the expected input and output, and is ready the moment you land on the page.

Rune designed URL Encoder / Decoder around practical needs rather than feature checklists. Encode complete URLs with encodeURI, preserving special URL characters like :, /, ?, and #. Pair that with component encoding, and you have a tool that fits real workflows without unnecessary complexity. URL Encoder / Decoder handles local input in your browser, so routine work stays on your device without extra setup.

Key Features of URL Encoder / Decoder

Built with 6 features covering full url encoding, component encoding, and more

Full URL Encoding

Encode complete URLs with encodeURI, preserving special URL characters like :, /, ?, and #.

Component Encoding

Encode individual URL components with encodeURIComponent for safe query parameter values.

Swap Input/Output

Instantly swap encoded and decoded text to chain multiple operations.

Privacy First

All encoding and decoding happens in your browser. No data is sent to any server.

Instant Results

See encoded or decoded output immediately as you type or paste text.

One-Click Copy

Copy results to clipboard with a single click for easy use in your projects.

Key Advantages of URL Encoder / Decoder

Works instantly

URL Encoder / Decoder loads in your browser and is ready the moment the page opens. No setup wizard, no configuration needed.

Full URL Encoding

Encode complete URLs with encodeURI, preserving special URL characters like :, /, ?, and #. This feature is available for free with no usage limits on the standard tier.

Browser-based processing

URL Encoder / Decoder handles local input in your browser, so routine work stays on your device without extra setup.

Mobile and desktop ready

URL Encoder / Decoder works on any screen size. The interface adapts to phones, tablets, and desktops so you can use it wherever you are.

No account needed for core use

Use the core URL Encoder / Decoder workflow without creating an account or providing an email address.

Free with no hidden costs

URL Encoder / Decoder is completely free on the standard tier. There are no trial periods, no watermarks on output, and no surprise paywalls after you start using it.

Who Benefits from URL Encoder / Decoder

URL Encoder / Decoder fits into a wide range of workflows. Here is how different users put it to work.

Students and Academics
Use URL Encoder / Decoder for assignments, research papers, and coursework. Encode complete URLs with encodeURI, preserving special URL characters like :, /, ?, and #.
Professionals and Teams
Integrate URL Encoder / Decoder into your daily workflow for faster turnaround on routine tasks. Encode individual URL components with encodeURIComponent for safe query parameter values.
Content Creators and Freelancers
Speed up your creative process with URL Encoder / Decoder. Instantly swap encoded and decoded text to chain multiple operations.
Developers and Technical Users
Add URL Encoder / Decoder to your toolkit for quick utility tasks between coding sessions. All encoding and decoding happens in your browser. No data is sent to any server.

How to Use URL Encoder / Decoder

URL Encoder / Decoder works right out of the box. Here is how

01

Enter Text

Paste a URL to encode or an encoded string to decode.

02

Choose Mode

Select Encode or Decode, and optionally enable Component mode.

03

Get Results

Click to process and copy the result to clipboard.

Rune pro tipsPro Tips

  • Use Component mode (encodeURIComponent) when encoding values for query parameters.
  • Full URL mode (encodeURI) preserves URL structure characters like / and ? while encoding spaces and special chars.
  • Double-encoded URLs (e.g., %2520) usually mean the URL was encoded twice, decode it twice to fix.
  • Spaces can be encoded as %20 (standard) or + (form data) depending on context.

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Frequently Asked Questions

What people ask most about URL Encoder / Decoder

Why is my URL breaking after I add query parameters?

Characters such as spaces, &, =, ?, #, and non-ASCII text need proper encoding when they are part of a parameter value.

What is the difference between encodeURI and encodeURIComponent?

encodeURI() encodes a full URL while preserving special URL characters like :, /, ?, #. encodeURIComponent() encodes everything except letters, digits, and - _ . ~ making it ideal for query parameter values.

Is my data safe?

Yes. All encoding and decoding happens entirely in your browser. No data is sent to any server.

Can I encode non-ASCII characters?

Yes. Both encodeURI and encodeURIComponent handle Unicode characters by converting them to UTF-8 byte sequences and percent-encoding each byte.

Should I encode the full URL or only a parameter?

Encode the full URL when preserving URL structure. Use component encoding for individual query values so reserved characters do not break the parameter string.

What does %20 mean?

%20 is the URL encoding for a space character. The % sign followed by two hexadecimal digits represents a single encoded character.

Why did % turn into %25?

That usually means an already-encoded value was encoded again. Decode once to inspect it, then encode only the raw value you actually need.

What is double encoding and how do I fix it?

Double encoding happens when an already-encoded URL is encoded again, turning %20 into %2520. Simply decode the string twice to restore the original text.

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