URL Normalizer

Canonicalize URLs for caching and deduplication

Two URLs that look different to humans may resolve to the same resource. Mixed-case hostnames, default ports, unordered query keys, and redundant path segments break string equality checks in logs, CDNs, and analytics. Normalization applies deterministic rules so you can compare, hash, or store a single canonical form.

This tool uses the browser URL API (aligned with WHATWG URL parsing). You can lowercase the host, strip :80 / :443, sort query parameters, optionally remove fragments or trailing slashes, and collapse /./ and /../ segments when they appear in the path you paste.

When to normalize

• Before diffing redirect chains or webhook callback URLs
• When building cache keys for API gateways or edge workers
• After merging tracking parameters from marketing links

For resolving relative references against a base URL, use the Relative URL Resolver. To inspect components without rewriting the string, try the URL Parser.