URL Encoder

The URL Encoder converts text into a percent-encoded form that is safe to place inside a web address. Characters such as spaces, ampersands, question marks and non-ASCII letters either carry special meaning or are not allowed in URLs, so they must be escaped using percent codes like %20 for a space and %3D for an equals sign to avoid breaking links.

This tool is built for developers, marketers and anyone who assembles URLs by hand and needs them to behave correctly. It offers two modes that mirror the standard JavaScript functions, so the output matches exactly what your code would produce. That predictability makes it ideal for crafting query strings, API request URLs and tracking parameters with confidence.

Component mode uses encodeURIComponent and escapes every reserved character, which is correct for individual query-string values, while Full URI mode uses encodeURI and preserves the structural characters that make a valid address, such as slashes and the question mark. Everything runs locally in your browser, so the text you encode is never uploaded.

Features

• Two distinct modes cover both single query values and whole addresses using encodeURIComponent and encodeURI.
• Live encoding updates the percent-encoded result instantly as you type or change the selected mode.
• Reserved characters such as spaces, ampersands, question marks and equals signs are escaped correctly.
• Non-ASCII characters are percent-encoded as their UTF-8 byte sequences, matching the modern URL standard.
• Component mode escapes every reserved character, which is exactly right for individual query-string values.
• Full URI mode preserves the slashes, colons and question marks that make up a valid URL structure.
• One-click copy and text download let you drop the encoded value straight into code or a browser bar.
• All encoding runs entirely in your browser, so the text and URLs you enter are never uploaded anywhere.

How to use URL Encoder

1. Type or paste the text or URL you want to encode into the input box at the top of the tool.
2. Optionally load a plain text file in the accepted .txt format if you have a longer value to encode.
3. Choose Component mode to encode a single query value, or Full URI mode to encode a complete address.
4. Watch the percent-encoded result appear instantly in the output area as you type or switch modes.
5. Compare the two modes if you are unsure which characters need escaping for your particular situation.
6. Copy the encoded result into your link, code or API request, or download it as a text file.

Benefits

• Developers can build safe query strings and API request URLs whose special characters will not break parsing.
• Marketers can encode UTM parameters and campaign tracking values so analytics records them accurately.
• Support teams can craft shareable links that contain spaces, symbols or non-English characters reliably.
• QA engineers can reproduce exactly how application code encodes a value when investigating a bug.
• Students can learn how percent-encoding works and see the difference between the two standard functions.
• Anyone can escape text for URLs without memorising hex codes or guessing which characters need escaping.

Reach for Component mode when you are encoding the value that sits after an equals sign in a query string, because it escapes ampersand, equals and question mark characters that would otherwise split your URL into the wrong pieces. This is the right choice for search terms, identifiers, redirect targets and any single parameter you are inserting into a larger address by hand.

Use Full URI mode when you already have a complete address and only want to repair the parts that are unsafe, such as spaces and accented letters, while leaving the slashes, colon and question mark that define the URL structure intact. Picking the wrong mode is the most common cause of links that look encoded but still fail, so match the mode to the task.

Because the encoder mirrors the browser's own encodeURIComponent and encodeURI functions, its output is exactly what your JavaScript would generate, which makes it perfect for debugging. All processing happens locally in your browser, so URLs containing private identifiers or tokens are never uploaded, logged or stored, and you can encode sensitive parameters without any privacy concerns.