URL Encoder & Decoder — Percent Encode URLs Online Free
Encode and decode URL components and query strings using RFC 3986 percent-encoding. Choose encodeURIComponent for parameter values or encodeURI for full URLs. Free on WeLuvTools.
About URL Encoder & Decoder — Percent Encode URLs Online Free
WeLuvTools URL Encoder & Decoder converts special characters in URLs and query strings to their percent-encoded equivalents (e.g. space → %20, & → %26, % → %25) and decodes them back to readable text. URL encoding is defined by RFC 3986, which specifies that only unreserved characters (A–Z, a–z, 0–9, hyphen, period, underscore, tilde) can appear literally in a URI; everything else must be percent-encoded. This tool supports encodeURIComponent (for individual query parameter values, user data, and form inputs) and encodeURI (for complete URLs where structural characters like /, :, ?, # should be preserved). It also handles decodeURIComponent and decodeURI operations. Everything runs in your browser — your URLs stay private.
100% Private
Files stay on your device.
Super Fast
Results in just a few seconds.
Secure & Safe
No account or upload needed.
Practical Limits
Capacity depends on your device.
Practical scenarios
Use cases
Common ways people get more value from this tool.
Use case 1
Encoding query string parameter values before appending them to a URL — prevents & or = in user data from breaking the URL structure
Use case 2
Decoding URL-encoded strings from server access logs, analytics platforms, or redirect URLs for readability
Use case 3
Encoding form data for GET request URLs in web applications
Use case 4
Decoding encoded redirect URLs from emails, ads, or marketing platforms
Use case 5
Encoding special characters in webhook or callback URL parameters
Use case 6
Encoding non-ASCII characters (e.g. ü, é, 中文) for safe URI transmission using UTF-8 byte sequences
Use case 7
Debugging API requests by comparing raw and decoded query strings
Use case 8
Preparing URL parameters for OAuth, payment gateways, and third-party API integrations
Types & formats
encodeURIComponent
Encodes all special characters including /, ?, &, = — use for individual query parameter values, form data, and user input
encodeURI
Encodes a full URL while preserving /, :, ?, #, &, = structural characters — use when the argument is a complete URI
decodeURIComponent
Decodes all percent-encoded sequences back to their original characters — use for individual parameter values
decodeURI
Decodes a complete URI while preserving structural characters — use for full URL decoding
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Open toolThe WeLuvTools difference
Why choose WeLuvTools
Benefit 1
Supports encodeURI, encodeURIComponent, decodeURI, and decodeURIComponent modes in one tool
Benefit 2
Follows RFC 3986 percent-encoding rules — the same standard used by web browsers and servers
Benefit 3
Instant encode and decode — results appear immediately as you type or paste
Benefit 4
Processes URLs entirely in your browser — nothing is logged or stored on a server
Benefit 5
Handles UTF-8 byte sequences for non-ASCII characters
Benefit 6
Free to use without creating an account; practical capacity depends on your browser and device