URL Encoder / Decoder
Percent-encode or decode any text or URL — component, whole-URL, or form mode, batch and recursive options. Runs entirely in your browser, no server, no sign-up.
What this tool does
Percent-encode (URL-encode) or decode text and URLs instantly, right in your browser. Nothing is sent to a server — it runs locally, works offline, and needs no sign-up. Pick a Mode and a Target, and optionally turn on Per line or raise Repeat.
Modes
| Mode | What it does |
|---|---|
| encode (default) | Turns unsafe characters into %XX escapes — a space becomes %20, ã becomes %C3%A3. |
| decode | Reverses it — turns %XX escapes back into the original characters. |
Target — the encoding style
| Target | What it escapes | Use it for | JS equivalent |
|---|---|---|---|
| component (default) | Everything except letters, digits, and - _ . ~ | A single query value or path segment | encodeURIComponent |
| uri | Only unsafe bytes; keeps URL delimiters (: / ? # @ & = …) | Cleaning a whole URL without breaking it | encodeURI |
| form | Like component, but a space becomes + | HTML form bodies and +-style query strings (application/x-www-form-urlencoded) | — |
When decoding with form, a + turns back into a space.
Batch and repeat
- Per line — convert each line of the input independently, keeping the line breaks between them. Handy for a list of values or URLs: paste one per line and convert them all at once, without the newlines themselves getting encoded.
- Repeat (1–16) — apply the operation that many times. Decode with
repeat = 2to un-nest a double-encoded string (a value that was encoded twice, e.g.a b→a%20b→a%2520b); or double-encode by repeating the encode.
Examples
| Input | Settings | Output |
|---|---|---|
São Paulo | encode · component | S%C3%A3o%20Paulo |
name=John Doe&city=x | encode · component | name%3DJohn%20Doe%26city%3Dx |
https://ex.com/a b?x=1&y=2 | encode · uri | https://ex.com/a%20b?x=1&y=2 |
a b+c | encode · form | a+b%2Bc |
a%2520b | decode · repeat 2 | a b |
S%C3%A3o%20Paulo | decode | São Paulo |
FAQ
Is it free and private?
Yes — your input never leaves your device, and it keeps working offline once the page has loaded.
When should I use form instead of component?
Use form when the value
goes into an HTML form submission or a query string that encodes spaces as +.
Use component for modern percent-encoded URLs, where a space is %20.
How does this map to JavaScript?
component matches encodeURIComponent,
uri matches encodeURI, and form additionally turns spaces into +.
My string looks like it's encoded twice — how do I fix it?
Decode with the
Repeat field set to 2 (or higher) to peel off each layer of encoding.
Developer & Automation Access
Run it from the terminal
Same engine as this page, headless — via the gizza CLI:
gizza tool url-encode "name=John Doe&city=São Paulo"New to the CLI? Get gizza →
Open it by URL
Pre-fill and auto-run this tool with query parameters — the names match the API/CLI:
https://gizza.ai/tools/url-encode/?text=name%3DJohn%20Doe%26city%3DS%C3%A3o%20Paulo&mode=encode&target=component&per_line=true&repeat=1Machine-readable descriptor: tool.json — title + parameters JSON Schema for agents.