Choose the exact component
Encode a parameter value or path segment rather than blindly transforming an entire URL. Separators such as colon, slash, question mark, ampersand, and equals have structural meaning.
Online URL encoder and decoder
Percent-encode a URL component or decode an encoded value without uploading it. Use this tool for query values, paths, callback parameters, and sanitized HTTP examples.
Encode or decode a URL component
Transform one query value or path segment without uploading it.
How to use the URL encoder and decoder
The URL encoder and decoder keeps its input on this device. Review the result using the steps below before sharing or relying on it.
Encode or decode once
Encoding replaces characters that are unsafe in a component with percent escapes. Decoding reverses one layer and reports malformed escape sequences instead of guessing.
Review the readable result
Decoded URLs can expose signed parameters, tokens, email addresses, internal hosts, redirect targets, or personal data. Redact those values before sharing a transcript.
What the URL encoder and decoder does not do
Percent-encoding is a transport representation, not encryption, validation, authentication, or protection against open redirects and injection. A receiving application must still parse and validate each value in context.
Before sharing the result, read HTTP transcript sharing guide for the matching context and privacy checks.
Url encoder and decoder questions
Privacy, limits, and correct interpretation.
Does the URL tool upload input?+
No. Encoding and decoding use built-in browser functions on this device.
Should I encode a complete URL?+
Usually not. Encode the individual query value or path segment so structural separators keep their meaning.
Does percent-encoding hide a secret?+
No. Anyone can decode it, and servers, proxies, analytics, and browser history may record the URL.
Why does decoding fail?+
A percent sign may be incomplete, contain non-hexadecimal characters, or represent malformed UTF-8 bytes.
Related browser tools
After using the URL encoder and decoder, choose another tool only if the next task changes to formatting, comparison, encoding, or measurement.
Format and validate JSON in your browser
Pretty-print compact JSON, minify a valid document, or locate a syntax error without uploading the input. The formatter runs entirely in this browser.
Open tool →Online text diff for line-by-line comparison
Compare an original and changed block line by line without sending either version to the server. Use the result for a quick inspection, not as a replacement for version-control history.
Open tool →Encode and decode Base64 text locally
Convert UTF-8 text to Base64 or decode a Base64 value locally. Base64 is a transport representation, not a confidentiality or access-control mechanism.
Open tool →Secret scanner for finding and redacting credentials
Check code, logs, configuration, and HTTP transcripts for common credential shapes before sharing. Detection and redaction run in this browser, and no input is uploaded.
Open tool →Online word, character, line and byte counter
Measure visible writing and actual UTF-8 storage size as you type. Counts update locally and help you check a text block before creating a paste.
Open tool →Free local JWT decoder for headers and claims
Inspect the Base64URL-encoded header and payload of a three-part JSON Web Token in this browser. The decoder never verifies the signature and never proves that a token is authentic or safe to trust.
Open tool →Unix timestamp converter for logs and APIs
Convert Unix seconds, Unix milliseconds, or an ISO 8601 date into UTC, local time, seconds, and milliseconds. Processing stays in the browser for safer log analysis.
Open tool →Generate a SHA-256 hash of any text
Create a lowercase SHA-256 digest from the exact UTF-8 bytes of a text block. Hashing runs through the browser Web Crypto API and does not upload the input.
Open tool →Local text cleaner for lines and whitespace
Prepare a text list or copied diagnostic block locally by trimming trailing spaces, compacting blank lines, removing duplicate lines, or sorting lines. Every action changes text, so review the result before replacing a source artifact.
Open tool →