URL Encoder Decoder: Encode and Decode URLs Online Free

URLs Speak ASCII, the Web Speaks Everything

Links cannot carry spaces, accents or special symbols raw — they must percent-encode. Encoding URLs translates any string into a transport-safe address that servers interpret correctly.

Query parameters, biometrics and redirects all rely on correct encoding.

ChooseTools encodes and decodes URLs locally in your browser.

Every HTTP request carries encoded data in its path and query string. When encoding is wrong, servers return 400 errors, redirects loop endlessly and analytics attribution breaks silently.

How to Encode or Decode a URL

Both directions, instantly:

Paste a URL with raw characters to encode it into a link-safe form, or paste an encoded address to decode back to human-readable text. Copy the exact result.

Local processing keeps your query secrets off any server.

The tool handles both component encoding for individual parameters and full URL encoding for complete addresses, so you choose the right granularity for the task.

Queries With Spaces, Accents and Symbols

Search strings with spaces, international characters and reserved symbols break links unless encoded.

Correct encoding replaces them with %-sequences that survive every hop intact.

Recipients receive the intended query, decoded faithfully.

A search for cafe with an accent, for example, encodes the e-acute into its UTF-8 percent-encoded representation, ensuring the target server reconstructs the original query without data loss or substitution.

Redirects, Tokens and Crafted Links

Redirect chains embed full addresses inside query values — double encoding must be deliberate. When a redirect URL is itself a parameter value, encoding the outer layer prevents the inner URL from being misinterpreted as separate query keys.

Tokens and sensitive parameters in URLs now encode predictably.

Building valid links becomes exact rather than hopeful.

OAuth callbacks, SSO return addresses and payment gateway URLs all contain special characters that must be encoded at exactly the right level to function across browsers and server implementations.

Decoding for Debugging and Log Analysis

Logs are full of encoded addresses; decoding them reveals the real parameters under scrutiny.

Understanding the raw string behind %20 and %C3%BC speeds up debugging.

Two clicks turn log noise into clarity.

Network engineers and backend developers routinely decode captured request URLs to verify that tracking parameters, UTM values and session tokens arrived intact through proxies and load balancers.

Encoding Standards and Character Sets

RFC 3986 defines which characters must be encoded in URIs and which are safe to leave unreserved. The tool follows this specification precisely, encoding spaces as %20 and respecting the allowed set of unreserved characters including letters, digits, hyphens, underscores and tildes.

UTF-8 multibyte characters like emoji and non-Latin scripts encode into their correct percent-encoded sequences, so a URL containing Japanese text or a smiling face decodes identically on any standards-compliant server.

Understanding the difference between encoding a full URL and encoding just a query parameter value prevents the common mistake of double-encoding already safe characters.

The decoder reverses every transformation faithfully, restoring the original string including all Unicode code points.

Private Web Work

Tokens, auth strings and unpublished links encode locally.

No upload, no account, no watermark — across all platforms.

Secure mail-readiness without any exposure whatsoever.

Authentication tokens, API keys embedded in URLs and internal redirect addresses never touch a third-party service, keeping your infrastructure details confidential during the encoding process.

Component Encoding vs Full URL Encoding

Component encoding encodes only the characters that are unsafe within a single URI component — a query value, a path segment or a fragment identifier. Full URL encoding encodes the entire address, which is appropriate when constructing a URL from individual parts.

Using the wrong encoding mode is a common source of bugs: component-encoding a full URL leaves slashes and question marks unencoded, while full-encoding a parameter value encodes the separators that should remain literal.

The tool lets you choose the appropriate mode for the task, preventing these mismatches and ensuring the output is valid regardless of the context in which it will be used.

Understanding when to use each mode is especially important when building URLs programmatically, where the wrong choice introduces subtle bugs that only manifest under specific input combinations.

URLs in the Developer Toolkit

Complement with base64, HTML escaping and JSON formatting for a full request-building set.

The suite is free and browser-native.

Every link, exactly right.