When you prepare to launch a website for the first time, you will encounter two related but distinct concepts: the domain name and the full URL. Confusing the two can lead to miscommunication with collaborators or mistakes when documenting your project. This article uses one hypothetical address to show exactly how these pieces fit together.
What Question Does Each One Answer?
Suppose you are setting up a small personal project and someone asks, “What is your website address?” You might answer with just a domain name, such as example.org, or you might give a longer string like https://example.org/notes/first-page?view=compact#intro. Both answers point to the same site in some sense, but they answer different questions. A domain name identifies the host, the machine or service where your content lives. A full URL identifies one specific resource on that host. Understanding this distinction helps you communicate clearly whether you are talking about the site as a whole or a particular page within it.12
Domain names exist because people find numeric IP addresses difficult to remember and associate with a purpose. As MDN explains, domain names provide a human-readable address for any web server available on the Internet, solving the problem that IP addresses are hard to remember and might change over time. A URL, on the other hand, is the address of a unique resource on the internet and serves as one of the key mechanisms browsers use to retrieve published resources such as HTML pages, CSS documents, and images. In short, the domain name answers “which server?” while the full URL answers “which exact resource on that server?”12
For the rest of this article we will work with one hypothetical address: https://example.org/notes/first-page?view=compact#intro. This address is used purely as a string-reading exercise. It does not claim that this page actually exists or is live anywhere. The goal is to practice identifying each component so that when you encounter real addresses in your own project, you can read them with confidence.
Labeling Every Part of the Example
Let us walk through the hypothetical address from left to right. The first segment, https, is the scheme. According to MDN, the scheme indicates the protocol that the browser must use to request the resource, and for websites this is usually HTTPS or HTTP. Next comes example.org, which is the host portion of the authority. This is the domain name that identifies the web server being requested. MDN notes that the domain indicates which web server is being requested and that a domain name provides a human-readable address for that server.12
After the host comes the path: /notes/first-page. The path represents the location of the resource on the web server. MDN describes it as the path to the resource, noting that in the early days of the web it represented a physical file location, whereas nowadays it is mostly an abstraction handled by web servers. Following the path, the question mark introduces the query string: view=compact. MDN explains that parameters are extra key-value pairs provided to the web server, separated by the ampersand symbol when there is more than one. Finally, the hash symbol introduces the fragment identifier: intro. MDN states that an anchor represents a sort of bookmark inside the resource, giving the browser directions to show the content located at that bookmarked spot, and that the fragment is never sent to the server with the request.2
To summarize the labeling: https is the scheme, example.org is the host, /notes/first-page is the path, the question mark signals the start of the query, view=compact is the query parameter, and the hash symbol signals the start of the fragment, which in this case is intro. Keeping these labels in mind makes it much easier to discuss a specific address with a collaborator or to troubleshoot when something does not load as expected.2
Same Host, Different Paths and Queries
Now keep the host portion fixed at example.org and change only the path. Consider https://example.org/notes/second-page and https://example.org/about/contact. In both cases the browser would request a resource from the same server, but the path portion tells the server which resource is being requested. The strings after the host are simply different instructions about where to look. We are not making any claim about what the server actually returns; we are only observing that the string itself differs.
Next, keep the path the same but change the query string. Compare https://example.org/notes/first-page?view=compact with https://example.org/notes/first-page?view=full. The host and path are identical; only the value assigned to the view parameter changes. From a string-reading perspective, these are two distinct URLs pointing to the same path but carrying different parameters. Whether the server actually treats them differently depends entirely on how that server is configured, which is not something we can determine from the address string alone.
You can also remove the fragment entirely. The address https://example.org/notes/first-page?view=compact is a valid URL without any hash or fragment portion. Adding #intro simply tells the browser to scroll to a particular spot within the retrieved resource. Removing it does not change which resource is requested; it only changes whether the browser receives an instruction about where to position the view. Recognizing these distinctions helps you describe precisely what changed when you compare two addresses side by side.
Building an Address Description Card
Record a short description card for your hypothetical project. The card should contain three items: the purpose of the address in one sentence, the full address string, and a labeled breakdown of each part. For our example, the purpose might read: “A compact view of the first notes page, scrolled to the introduction section.” The full address is https://example.org/notes/first-page?view=compact#intro. The breakdown lists scheme as https, host as example.org, path as /notes/first-page, query as view=compact, and fragment as intro.
Writing this card forces you to confront any ambiguity in how you think about the address. If you cannot state the purpose clearly, it may mean you are not yet sure what the page is supposed to do. If you cannot label a part, that is a signal to revisit the definitions. The card is not a technical requirement; it is a personal reference tool that makes future conversations about your site more precise.
You might keep this card in a plain text file, a note-taking application, or even a handwritten index card. The format does not matter as long as the three items are present and legible. Some people prefer a table with columns for part name, value, and a short note about what that part does. Others prefer a single paragraph that reads naturally. Choose whichever format you are most likely to revisit when you need to explain your address to someone else.
Verifying the Card by Hand
Check your description card against the original address string by copying the full URL into a blank line and then marking each boundary with a different symbol or color. For instance, draw a vertical line after https, another after example.org, another after /notes/first-page, another after ?view=compact, and note that #intro is the final segment. This manual marking exercise catches common mistakes such as forgetting the question mark that introduces the query or confusing a slash in the path with the colon-slash-slash that separates scheme from authority.
Write out each labeled part on its own line, one beneath the other, and compare your list to the card you created in the previous section. If any part is missing or misplaced, correct the card before you share it with anyone. Pay particular attention to whether the query string begins with a question mark and whether the fragment begins with a hash symbol, because these two delimiters are easy to overlook when you are reading quickly.
Repeat this verification once more after any edit to the address. Even a small change, such as adding a second query parameter or renaming a path segment, can shift the boundaries you marked. Making verification a habit means you will rarely send a collaborator a description that contains an error, and you will build confidence in your ability to read unfamiliar addresses on other sites as well.
Keeping the Record for Future Use
Store your verified description card somewhere you will naturally encounter it during the project. If you maintain a project README or a planning document, include the card there. If you communicate with a designer or developer, paste the relevant portion into your first message so that both parties are working from the same understanding of the address structure. The card costs almost nothing to produce but saves repeated back-and-forth clarification later.
As your project grows, you may accumulate several addresses: one for the homepage, one for a blog section, one for a settings page, and so on. Each one can receive its own card following the same three-item format. Over time this collection becomes a quick reference that helps you spot patterns, notice inconsistencies in naming, and explain your site structure to new collaborators without re-deriving the breakdown from scratch each time.
The choice of how detailed your records should be depends on the size of your project and how often you expect to discuss addresses with others. For a single-page personal site, one card may be all you ever need. For a multi-section project, a small table of cards grouped by section keeps everything accessible. The important thing is that you have a consistent, honest record of what each part of the string means, so that the next time someone asks “What is your website address?” you can answer at whatever level of detail the situation requires.
Frequently asked questions
Is a domain name the same thing as a URL?
No. A domain name identifies the host server, while a URL is the full address of a specific resource on that server. The domain name is one component within a URL.12
Does the fragment part of a URL get sent to the server?
No. According to MDN, the fragment identifier (the part after the hash symbol) is never sent to the server with the request. It is used only by the browser to position the view within the retrieved resource.2
Can I change the query string without changing which page is requested?
The path portion identifies the resource, while the query string provides additional parameters. Changing only the query keeps the same path, but whether the server responds differently depends on how that server is configured. From a string-reading perspective, the resource location has not changed.