Editor's pickURL encodingUnicodeJavaScriptURLSearchParams
How to Encode Unicode Characters in a URL
Learn to encode accented and non-Latin text in URL values, avoid double encoding, preserve URL structure, and verify query parameters in a browser.
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Editor's pick
API paginationREST APIs
How to Parse API Pagination URLs Without Losing Parameters
Learn how to parse API pagination URLs in JavaScript, preserve cursors and repeated query parameters, resolve relative links, and follow next-page URLs.
URLsHTTP
Why URL Fragments Aren’t Sent to the Server
Learn why browsers keep URL fragments out of HTTP requests, how to verify it in server logs, and what it means for anchors and client-side routes.
URLsAPI debugging
How to Compare Two URLs for API Request Changes
Compare two URLs component by component to spot API request changes in hosts, paths, query order, repeated keys, trailing slashes, and encoding.
URL parsingJavaScript
How to Parse a URL: A Field-by-Field Guide
Learn how to parse a URL by identifying its scheme, host, port, path, query, and fragment, with JavaScript examples and common edge cases.
frontend developmentURL query parameters
How to Sync Filters with URL Query Parameters
Build shareable search and filter URLs with URLSearchParams, restore state on load, and choose pushState or replaceState without breaking browser navigation.