URL Encoder & Decoder

Encode URL parameters or decode percent-encoded text online. Choose component, complete URL or form mode to handle UTF-8, spaces, plus signs and reserved characters correctly.

0 characters
Result

Your result will appear here.

How to encode or decode a URL value

  1. Paste the original text or the percent-encoded value. Choose Encode or Decode.
  2. Use component mode for one parameter or path segment, complete URL mode to preserve URL separators, or form mode for one form field.
  3. Run the conversion and copy the result. Encode individual parameter values before inserting them into a URL.

Working with URL Encoder & Decoder

Component mode escapes separators such as & and =. Complete-URL mode keeps URL separators. Form mode uses + for spaces and %2B for literal plus signs. Choose the mode that matches the system reading the result.

Example: encode a single URL parameter

Input
Hello, world! 👋 + & = / ?
Result
Hello%2C%20world!%20%F0%9F%91%8B%20%2B%20%26%20%3D%20%2F%20%3F

Questions about URL Encoder & Decoder

Should I encode a complete URL or just a parameter?

For a parameter value, use component mode: & and = become %26 and %3D. Complete URL mode preserves separators such as :, /, ? and &, so it does not protect individual values automatically. Complete URL decoding also leaves reserved escapes such as %2F intact.

Why does a space become %20 in one mode and + in another?

Component mode represents a space as %20 and a literal + as %2B. Form mode uses + for a space and %2B for a literal plus sign. When decoding, only form mode turns a raw + into a space.

Why does %20 turn into %2520?

Encoding an already encoded value encodes the % sign again as %25. This tool processes one layer at a time; decode only as many times as the receiving system expects. Repeated decoding can turn escaped separators into meaningful URL characters.

Can I encode accented letters, non-Latin text and emoji?

Yes, encoding uses UTF-8. Decoding requires valid percent escapes and valid UTF-8 bytes; incomplete sequences or %GG are rejected. This is not a converter for older encodings such as GBK. Decoding displays text; it does not open the resulting address.

Are my files, tokens or text uploaded?

No. These tools process your input in your browser. The website serves the page and its code, but your input is not sent to a conversion server or saved in an account.

Related tools for your next step

Explore all developer tools

Encoding & Files

Move between text, bytes, URLs and embedded images without changing your original data.

Base64 Encoder & Decoder

Encode UTF-8 text to Base64 or decode standard and URL-safe Base64. Control padding and line wrapping.

Base64URL Encoder & Decoder

Convert text to URL-safe Base64 with the - and _ alphabet. Encode or decode unpadded Base64URL strings.

Image to Base64

Convert PNG, JPEG, GIF, WebP, SVG and other recognised image files to Base64 Data URIs in your browser.

Base64 to Image

Decode a Base64 image or Data URI, preview supported image types and download the original image bytes.

File to Base64

Encode any file to a Base64 string, with optional Data URI prefix, padding and MIME line wrapping.

Base64 to File

Turn Base64 strings and Data URIs back into downloadable files without changing the decoded binary data.

HTML Entity Encoder & Decoder

Convert text and Unicode characters to HTML entities, or decode named and numeric HTML character references.

Unicode Inspector & Escape Converter

Inspect Unicode code points, UTF-8 bytes and UTF-16 units, or convert JavaScript Unicode escapes to readable text.

Data & Text Inspection

Read structured data, inspect tokens and understand exactly what changed.

JSON Formatter, Minifier & Validator

Format, minify and validate JSON with exact large-number preservation, indentation options and recursive key sorting.

JWT Decoder

Read JWT headers and payloads, inspect expiry and activation times, and view claims without sending your token anywhere.

Text Diff Checker

Compare two texts by line, word or character. Highlight additions and removals while retaining spaces and line breaks.

Regular Expression Tester

Test JavaScript regular expressions with flags, match positions, capture groups and named groups in your browser.

Hashes, IDs & Schedules

Check file integrity, generate identifiers and make sense of times and recurring schedules.

MD5 Hash & File Checksum

Calculate an MD5 hash for text or a local file, and compare it with an expected checksum.

SHA-1 Hash & File Checksum

Calculate SHA-1 hashes for UTF-8 text or files and compare the result with an expected checksum.

SHA-256 Hash & File Checksum

Generate SHA-256 hashes for text or files and check a downloaded file against its published checksum.

SHA-512 Hash & File Checksum

Calculate SHA-512 text and file hashes locally and compare full hexadecimal checksums.

CRC32 Checksum Calculator

Calculate standard CRC-32 checksums for text or files and compare eight-character hexadecimal results.

HMAC Generator

Generate HMAC-SHA-1, HMAC-SHA-256 and HMAC-SHA-512 with a UTF-8 or hexadecimal secret key.

UUID & GUID Generator

Generate random UUID v4 or time-ordered UUID v7 identifiers, individually or in batches.

Unix Timestamp Converter

Convert Unix seconds, milliseconds and ISO 8601 dates. View the same instant in UTC and any IANA time zone.

Cron Expression Parser

Validate five- or six-field Cron expressions and list upcoming runs in an IANA time zone, including daylight-saving changes.

Cron Expression Generator

Build a Cron expression from time fields or common presets, then preview its next scheduled times in your chosen zone.

Your input and files are processed on your device. Keep sensitive results out of shared clipboards and use a trusted device for private keys and tokens.