URL Decoder Online Free – Decode %20 & Percent Encoding

🔗 ➜ 🌐

URL Decoder Online Free

Turn percent-encoded strings back into readable text instantly — handles %20, plus signs and full UTF-8 (emoji, Hindi, Chinese restore perfectly). Malformed input gets an exact position diagnosis. No upload, unlimited use.

🔒 100% Private — Decoding Happens in Your Browser

🌐 Percent Decoder

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

Encoded URL or Text 0 chars

Decoded Text 0 chars

Decoding Mode 🧩 Component — decode everything (for values) 🔗 Preserve URL — keep reserved escapes intact

Treat + as space (for form / query strings)

🚀 Need to encode text into a URL-safe form? Use our free URL Encoder.

🚀 Working… 0%

🔗 Input🌐 Decode✅ Done

How to Decode a URL Online — 3 Easy Steps

1️⃣

Paste the Encoded String

Drop in any percent-encoded text or URL — %20, %3A, + signs, anything. Output converts live as you type.

2️⃣

Pick Options

Keep "Treat + as space" on for query strings, or switch to Preserve-URL mode to keep reserved escapes.

3️⃣

Copy & Use

Copy the readable result with one tap or download as .txt. Nothing is ever uploaded anywhere.

Why Use This URL Decoding Tool?

🔍

Exact Error Diagnosis

Broken % sequence? You get its exact position and context — not a silent blank output box.

␣

Plus-Sign Handling

Optionally converts + to spaces — the form/query-string convention, done right.

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Two Modes

Fully decode values, or preserve reserved escapes to inspect URL structure exactly.

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True UTF-8

Multi-byte percent sequences restore into perfect emoji, Hindi, Chinese and Arabic text.

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100% Private

Decoding runs locally in your browser — encoded tokens and tracked links never leave your device.

♾️

Unlimited & Free

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

Popular Use Cases

• 🔍 Read what's really inside long tracking URLs and UTM links
• 🧪 Debug API query parameters and webhook payloads
• 📧 Decode mailto: links and shared app links that look garbled
• 🔐 Inspect Base64-in-URL values before deeper analysis
• 👩‍💻 Reverse percent-encoding in logs, error reports and redirects
• 🎓 Learn URL structure by seeing what each escape really means

Pro Tips for Developers

• + vs %20: if your source is an HTML form or query string, keep "Treat + as space" on; for path data or raw payloads, turn it off to see literal plus signs.
• Seeing an error at a position? The message shows the exact spot — usually a lone % or a truncated copy-paste that lost trailing characters.
• Decode once: strings can be double-encoded (%2520). If output still shows % signs, run the decoder again on the result.
• Preserve mode use: leaves things like %23 (hash) encoded so you can study which parts of a URL are structure vs content.
• Round-trip test: paste your decoded text into our URL Encoder — you should get the original encoded string back.

Frequently Asked Questions

Paste the encoded string in the left box — readable text appears instantly on the right. %20 becomes a space automatically, along with every other valid escape. Copy or download the result.

%3A is the percent-encoding of the colon character (:). You'll often see it in timestamps (like %3A00 for seconds) and in protocols inside query values. This decoder converts it back automatically.

The two most common causes: a % sign not followed by two hex digits (often from a truncated copy-paste), or percent sequences that don't form valid UTF-8 text. This tool tells you exactly which problem exists and where — including the position number and surrounding text.

If your string comes from an HTML form submission or a URL query section, yes — + means space there by convention. If you're decoding path data, tokens or raw encoded payloads, turn the option off so literal plus signs are preserved.

Component mode decodes every escape, including reserved characters like %3F (?) and %23 (#) — best for parameter values. Preserve mode leaves escapes of reserved characters intact so you can study the URL's structure without it breaking apart.

Yes. Multi-byte UTF-8 sequences — like %F0%9F%8C%8D for 🌍 or the escapes for Hindi and Chinese — decode back into the exact original characters through a proper UTF-8 decoder.

No. Decoding runs 100% in your browser with JavaScript. Encoded links, tokens and tracked URLs never leave your device — this page has no server component at all.

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