URL Encoder & Decoder

Every URL you click, every form you submit, and every API call your app makes relies on URL encoding (also called percent-encoding) to safely transport data across the internet. Characters that have special meaning in URLs — like spaces, ampersands (&), equals signs (=), and hash marks (#) — must be converted into percent-encoded sequences (e.g., %20, %26, %3D, %23) so they don't break the URL structure.

Our URL Encoder & Decoder is a best-in-class, free online tool that goes far beyond basic encode/decode. It offers three encoding variants with clear guidance on when to use each:

• Component mode (encodeURIComponent) — Encodes everything except A-Z a-z 0-9 - _ . ! ~ * ' ( ). Use this for query parameter values, form data, and any text being placed inside a URL. This is the right choice 90% of the time.
• Full URL mode (encodeURI) — Preserves URL-structural characters like : / ? # [ ] @ ! $ & ' ( ) * + , ; =. Use this when you have a complete URL with special characters in the path or query string but want to keep the URL structure intact.
• Raw mode (RFC 3986) — Strict percent-encoding that encodes everything except unreserved characters (A-Z a-z 0-9 - _ . ~). Use this for maximum compatibility and standards compliance.

Unique features you won't find in most online tools:

• URL Parser — In URL mode, automatically breaks down your URL into protocol, host, path, query parameters (as a readable table), and fragment
• Recursive decode — Automatically detects and decodes multi-encoded strings (e.g., %2520 → %20 → space), showing each pass
• Bulk mode — Encode or decode multiple URLs at once, one per line
• Code snippets — Auto-generated encode/decode code for JavaScript, Python, PHP, Java, Go, cURL, and C#
• Space encoding choice — Choose between %20 (standard) and + (form-data compatible)

100% browser-based — your data is never uploaded to any server. All processing runs entirely in your browser using JavaScript. No file size limits, no signup, no privacy concerns.

• Three encoding variants with clear guidance — Most tools offer just one mode. We offer Component, Full URL, and Raw with explanations of when to use each, eliminating the common encodeURI vs encodeURIComponent confusion.
• Visual URL parser — Paste a URL and instantly see it broken down into protocol, host, port, path, query parameters (as a table), and fragment. No other free tool does this in-line with encoding.
• Recursive decode shows each pass — When data has been encoded multiple times (common with ad tracking URLs, redirect chains, and analytics platforms), our tool decodes layer by layer and shows you each step — not just the final result.
• Bulk processing — Encode or decode hundreds of URLs at once, one per line. Essential for SEO professionals working with URL lists from crawl reports.
• Code snippets in 7 languages — After encoding, get ready-to-use code for JavaScript, Python, PHP, Java, Go, cURL, and C# — copy and paste directly into your project.
• Draft persistence — Your last input is saved in localStorage and restored when you return. Never lose work-in-progress.

• Building API request URLs — When constructing URLs with query parameters from user input or dynamic data, always encode the values to prevent injection and ensure the URL is valid.
• Debugging encoded URLs — Analytics tracking URLs, ad platform click URLs, and redirect chains often contain heavily encoded parameters. Decode them to understand what's actually being passed.
• Form data submission — HTML forms encode data using application/x-www-form-urlencoded format. Understanding this format helps debug form submission issues.
• Embedding URLs inside URLs — When passing a URL as a query parameter (like a redirect URL), the inner URL must be encoded to prevent its special characters from being interpreted as part of the outer URL.
• International characters in URLs — Non-ASCII characters (Chinese, Arabic, emoji, accented letters) must be percent-encoded for URLs to work across all browsers and servers.
• SEO and crawl analysis — When reviewing crawl reports, log files, or Google Search Console data, URLs are often shown encoded. Decode them to understand which pages were actually crawled.

Pro tip: When in doubt about which encoding mode to use — choose Component. It's the safest option that encodes everything that could potentially break a URL. Only use Full URL mode when you have a complete, well-formed URL whose structure you want to preserve.