URL Encoder / Decoder
Encode & decode percent-encoded URLs, parse a URL into its parts, and handle query strings — live, bulk-capable and 100% in your browser.
Status
Ready
Type or paste content above — conversion runs automatically.
Quick Reference
- Space → %20 (or + in query strings)
- ! → %21 # → %23 $ → %24 & → %26
- = → %3D ? → %3F @ → %40
encodeURIComponentencodes everything;encodeURIpreserves: / ? # & =
How to Use the URL Encoder / Decoder
- Choose a tab — Encode to make text URL-safe, Decode to reverse percent-encoding, or Parse URL to break a URL into its parts.
- Pick the encode mode — Full (
encodeURIComponent) for individual values, or Partial (encodeURI) for whole URLs. - Handle spaces — tick "Space → +" for form/query-style encoding, or "+ as space" when decoding form data.
- Go bulk — enable "Per line" to encode or decode many strings at once, one per line.
- Copy, download or swap — results update live; reuse the output as new input with Swap.
What Is URL Encoding?
URL encoding (also called percent-encoding) converts characters that have special meaning in URLs — like spaces, ampersands and question marks — into a transmission-safe format. Each reserved character is replaced with a % followed by its two-digit hexadecimal code, so a space becomes %20 and an ampersand becomes %26. This keeps URLs interpreted correctly by browsers, servers and APIs without breaking.
This tool covers the whole workflow: encoding (full or partial), decoding (with optional +-as-space handling), and a URL parser that splits any link into protocol, host, port, path, query and fragment — with every query parameter decoded into a clean key/value table.
Common Use Cases
🔧API developmentEncode query parameters so special characters don't break requests.
🚀SEO & marketingEncode tracking values in UTM and campaign URLs reliably.
🐛Web debuggingDecode encoded URLs from logs or the address bar to read them clearly.
📝Form submissionsHandle input with spaces, symbols or non-Latin characters correctly.
📧mailto & deep linksBuild links with pre-filled subject and body text safely.
📊Log & data analysisParse and interpret encoded entries in server logs.
Why Choose Our URL Encoder / Decoder
- 🔗 Built-in URL parserBreak any link into protocol, host, path, query and hash instantly.
- ⚙️ Two encode modes
encodeURIComponentandencodeURIfor values vs whole URLs. - ➕ Smart space handlingSwitch between
%20and+for path vs query/form contexts. - 📝 Bulk per-line modeEncode or decode hundreds of strings in one pass.
- ⚡ Live & losslessReal-time conversion that round-trips Unicode and emojis perfectly.
- 🔒 100% privateRuns entirely in your browser — no uploads, no tracking.
Frequently Asked Questions
What's the difference between encodeURI and encodeURIComponent?
encodeURI is for entire URLs and leaves structural characters like : / ? # & = untouched. encodeURIComponent is for individual URL parts (like query-parameter values) and encodes everything except unreserved characters. Use encodeURIComponent for values you insert into a URL; use encodeURI for a full URL string.When should I URL-encode a string?
Any time text contains spaces, special characters (
& ? # = +) or non-ASCII characters (like é, ñ, 中) and you're putting it into a URL. Encoding ensures browsers and servers interpret the URL correctly.Why do spaces become %20 sometimes and + other times?
In the path part of a URL, spaces are encoded as
%20. In query strings (after the ?), spaces are often encoded as + for historical form-submission reasons. Both are valid in their context — use the "Space → +" toggle to choose.Are encoded URLs safe to share?
Yes. Percent-encoding is a standard, lossless transformation — any decoder, including every browser, can reverse it. It's a transport format, not encryption, so don't use it to hide sensitive data.
What does Parse URL do?
Paste any URL and it splits out the protocol, host, port, path, query string and hash, then lists every query parameter with its decoded value — ideal for debugging long tracking links.
Does it work offline?
Yes. Once the page is loaded, all encoding, decoding and parsing happen locally in your browser using built-in JavaScript functions.