URL Encoder Online Free – Percent Encoding, UTF-8 Safe

🌐 ➜ 🔗

URL Encoder Online Free

Percent-encode any text or full URL instantly — choose component mode or preserve URL structure, %20 or + spaces, optional strict RFC 3986. Full UTF-8 support. Live conversion, no upload, unlimited use.

🔒 100% Private — Encoding Happens in Your Browser

🔗 URL Percent Encoder

🔧 JS ⏳ · Input — · Output — · Engine ⏳

Text or URL 0 chars

Encoded Output 0 chars

Encoding Mode 🧩 Component — encode everything special (for values) 🔗 Preserve URL — keep : / ? # readable (for whole URLs)

Space Style %20 — standard (recommended) + — form / query style

Strict RFC 3986 (also encode ! ' ( ) *)

🚀 Need to decode a percent-encoded URL back? Use our free URL Decoder.

🚀 Working… 0%

🌐 Input🔗 Encode✅ Done

How to Encode a URL Online — 3 Easy Steps

1️⃣

Paste Text or URL

Enter a search query, parameter value, or a complete URL. Output converts live as you type.

2️⃣

Pick Your Mode

Component mode encodes every special character; Preserve-URL keeps : / ? # readable. Choose %20 or + for spaces.

3️⃣

Copy & Use

Copy the encoded string with one tap or download as .txt. Nothing is ever uploaded anywhere.

Why Use This URL Encoding Tool?

🧩

Two Smart Modes

Encode parameter values fully, or preserve URL structure — most tools force you to choose just one.

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%20 or + Spaces

Pick standard percent-encoding or form-style plus — whichever your API or system expects.

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Strict RFC 3986

Optional strict mode also encodes ! ' ( ) * — matching strict servers and spec-compliant tooling.

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Full UTF-8

Hindi, Chinese, emoji — multi-byte characters percent-encode correctly, every time.

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100% Private

Encoding runs locally in your browser — URLs with tokens or credentials never leave your device.

♾️

Unlimited & Free

No length caps, no sign-up, no watermarks. Encode strings of any size, as often as you like.

Popular Use Cases

• 🔍 Encode search queries and parameter values for query strings
• 🧪 Prepare safe test URLs for API requests and webhooks
• 📧 Build mailto: and share links that survive messaging apps
• 🏷️ Create UTM campaign links with properly encoded parameters
• 👩‍💻 Percent-encode values in JavaScript, Python or curl commands
• 🌍 Share links containing non-English words that break in some apps

Pro Tips for Developers

• Component vs Preserve: encoding a value? Use Component. Encoding a whole link you want humans to still read? Use Preserve-URL.
• %20 vs +: %20 works everywhere; + is the HTML form convention and only safe inside query strings — never in the path.
• Encode once: double-encoding turns a space into %2520. Encode values just before inserting them, never re-encode already-encoded strings.
• Reserved characters: ? # & = have special meaning in URLs. Inside a value, they must be encoded — that's exactly what Component mode does.
• Round-trip test: paste your output into our URL Decoder — you should get your exact original back.

Frequently Asked Questions

URL encoding (percent-encoding) converts characters that are unsafe or reserved in URLs into a % followed by their hexadecimal byte value — for example, a space becomes %20. It lets any text travel safely inside a web address without breaking it.

A space is not allowed in URLs — it would end the address or break the request. %20 is the standard percent-encoding of the space character (hex 20). Some systems also accept + as a space, which this tool can produce with the Space Style option.

They both represent a space, but in different contexts: %20 is the universal standard valid anywhere in a URL, while + is a convention from HTML form submissions and is only interpreted as a space inside query strings. When in doubt, use %20.

Use Component mode for values you insert INTO a URL — it encodes everything special, including ? # & = so they cannot break the link. Use Preserve URL mode for a complete address you want encoded but still readable — it keeps structural characters like : / ? as they are.

The standard encoder leaves ! ' ( ) * unencoded for historical reasons. Strict mode percent-encodes those five as well, matching the official RFC 3986 spec — useful with strict servers, signature generation and some APIs.

Yes. Multi-byte characters are first converted to UTF-8 bytes, then each byte is percent-encoded — so Hindi (हिन्दी), Chinese (中文) and emoji all encode correctly and decode back perfectly.

No. Encoding runs 100% in your browser with JavaScript. URLs containing tokens, session IDs or private data never leave your device — this page has no server component at all.

Use our free companion tool — the URL Decoder. There is also a Go to Decoder button inside this tool for the direct link. Together they form a perfect round trip.