What is technical documentation? Types, examples and how to write it

Technical documentation is written material that explains how a product works and how to use it. In software, that covers the help article a customer opens when they're stuck, the API reference a developer reads before an integration, and the internal page that tells your support team how billing works. (This guide sticks to software and SaaS products. Manuals for washing machines are a different world.)

If you're on a product team that ships often, technical documentation is what customers read when nobody from your team is there to explain the product. Every release can change what those pages describe, from a setup flow to the limits on a plan. Customers follow the docs, and so do the AI assistants that answer questions from your help center. When the docs and the product disagree, both get the wrong answer at the same time (and the assistant repeats it to everyone who asks).

What is technical documentation?

Technical documentation explains how a product works and how to use it, for anyone who has to use, build on, or support that product. The reader might be a customer setting up an account or a developer building an integration. Sometimes it's a teammate who joins next month.

A technical document is one piece of that set. A single how-to guide is a technical document. So is one API endpoint's reference page, one set of release notes, or one troubleshooting article. When people search "what are technical documents", they usually mean these individual pages; "technical documentation" is the whole collection, plus the knowledge base or docs site that holds it.

Two traits separate technical documentation from other writing about your product:

• It describes how the product behaves right now. A blog post can be about an older launch. A setup guide has to match the current screens.

• It's written to help someone finish a task or understand a system. Marketing copy persuades. Technical documentation instructs, explains, and lists facts the reader can check against the product.

That second trait is why the writing style looks different (numbered steps, short sentences, exact field names) and why it goes out of date every time the product changes.

What are the main types of technical documentation?

The three main types of technical documentation are product (user) documentation, developer (system) documentation, and process documentation. Each one has a different reader and a different owner.

Product documentation is the type a product team touches most often, because it describes the interface customers click through every day. Developer documentation matters as soon as you have an API or SDK that partners integrate with. Process documentation stays internal, but it's what keeps the other two consistent (a style guide is process documentation, for example).

There's also a second way to slice the same material, and it's where the "four types" question comes from. The Diátaxis framework sorts documentation by what the reader needs in the moment:

• Tutorials: learning-oriented lessons that walk a newcomer through a first success.

• How-to guides: task-oriented steps for someone who already knows what they want to do.

• Reference: information-oriented facts to look up, like every parameter of an API endpoint. Readers dip in and out of reference rather than reading it top to bottom, so consistency matters more than flow here.

• Explanation: background on why the product works the way it does.

The two models fit together. Your user documentation will contain tutorials, how-to guides and explanations; your developer documentation will lean on reference. Picking a Diátaxis type before you write each page keeps a how-to guide from turning into a ten-paragraph essay.

Who writes technical documentation?

A technical writer writes technical documentation when a company has one. Without one, the writing falls to whoever knows the feature best. Product managers draft feature docs because they know what shipped. Engineers write API reference and READMEs. Support teams write troubleshooting articles from the tickets they close. At one enterprise SaaS company we spoke with, which has no technical writers, seven or eight product managers own the docs, and support picks up some of the maintenance. A subject matter expert (the engineer who built the feature, or the solutions engineer who sets it up for customers) reviews for accuracy.

Explanation pages need a different kind of knowledge than step-by-step guides. A presales lead at an IT software company told us that the biggest challenge in technical documentation "is not the surface level how-tos". New features need the concepts explained first, sometimes by comparing them to how customers did the same task in another tool, before any step-by-step guide makes sense.

Whether you need a dedicated writer depends on how many pages you have and how many people contribute to them. We worked through that decision, with article-count thresholds, in should you hire a technical writer?

How to write technical documentation in seven steps

Writing a good page takes the first five steps. Publishing it and keeping it accurate take the last two, and they apply as much to a single help article as to a full docs site.

1. Name the reader and the task

Write down who will read the page and what they're trying to do when they open it. "A workspace admin connecting SSO for the first time" gives you far more to work with than "users". The reader decides the vocabulary you can assume, which steps you can skip, and whether a screenshot will help.

If a page has two different readers (an admin and an end user, say), that's usually two pages.

2. Pick the document type before you draft

Decide whether the page is a tutorial, a how-to guide, reference, or an explanation, and hold it to that one job. A how-to guide that stops halfway to explain the data model loses the reader who only wanted the steps. Put the background in an explanation page and link to it.

3. Collect the facts from the people and the product

Good technical documentation starts from the source. Read the spec or ticket for the feature, ask the engineer who built it about limits and edge cases, and click through the feature yourself in a test account. Write down exact names: button labels, field names, error messages, plan names. Those are the words readers will search for and the words your support team will paste into replies.

4. Outline with a template, then draft in plain language

Every how-to guide in your knowledge base should have the same shape, so begin from an outline for the document type (there are short ones in the next section). Then write the draft:

• Use the product's exact labels in bold. Readers scan for "Settings" and "Save changes", not for "the configuration area".

• Put one action in each numbered step. "Click Integrations, then choose Slack" can stay together; a step with four actions can't.

• Define jargon the first time you use it, or swap it for a plain word. Your reader might be a support agent, not an engineer.

• Add screenshots only where the screen is confusing. Every screenshot is one more image to replace when the interface changes.

A style guide keeps the voice consistent when several people write. If you don't have one yet, the Google developer documentation style guide is free to use, and it recommends following your own project's style first and its rules second.

5. Review with an expert and with a newcomer

Send every new page to two reviewers. The subject matter expert checks that it's correct. Someone who has never used the feature checks that it's followable, ideally by doing the steps in a test account while reading. The expert catches wrong facts; the newcomer catches the steps the expert no longer notices.

6. Publish where readers and AI tools will find it

Put the page in your knowledge base or docs site, link it from the places readers already look (in-app help, the related feature pages, your API reference), and give it a title that matches how people search.

One way to publish is docs as code, where you keep docs the way engineers keep code. In plain terms, every page is a text file (usually written in Markdown) stored in a version control system such as GitHub or GitLab. Each change is saved with a record of who made it and why, someone reviews the change before it goes live, and any earlier version can be restored. You don't need to know git to benefit; the editor can look like any other writing tool. We explained the model in more depth, including why review before publishing matters more now that AI drafts pages, in what is docs as code.

7. Trace every product change to the pages it affects

A page goes out of date the day the feature it describes changes, so each release needs someone to work out which pages it touched. When a pull request merges, a Linear or Jira ticket closes, or a support conversation reveals a confused customer, ask which pages describe that behavior, then propose an update and have someone who knows the feature review it before it publishes.

Doing this by hand means reading every release and searching your docs for the old terms. Pageloop's agent watches those signals from code, project management, team chat and support, finds the affected pages, and proposes a change set with the evidence attached. Your team accepts or ignores each suggestion, or tells the agent what to change, and the approved update goes out as a pull request that publishes on merge. For the manual version of this step, our guide to updating product documentation after a release walks through searching for retired terminology and the hidden places (onboarding guides, FAQs, screenshots in unrelated articles) where old behavior survives.

Technical documentation templates

A technical documentation template is a fixed outline for one document type, so every page of that type answers the same questions in the same order. Copy these into your docs tool and adjust the headings to your product.

How-to guide

• Title that starts with a verb ("Connect Slack to your workspace")

• One sentence on what the reader will have done by the end

• Before you start: plan, role or permissions needed

• Numbered steps, one action each, with exact labels in bold

• What happens next, or how to check it worked

• Related articles

API reference entry

• Endpoint name and one-line purpose

• Method and path

• Authentication required

• Parameters, each with type, whether it's required, and a description

• Example request and example response

• Error codes this endpoint returns

Release notes

• Version or date

• New: features added, each with one sentence on what it lets the reader do and a link to its doc

• Changed: behavior that works differently now

• Fixed: bugs resolved, in the words a customer would use to report them

• Removed or deprecated, with what to use instead

Troubleshooting article

• The symptom, written the way the customer would describe it (often the exact error message)

• Likely causes, most common first

• A fix for each cause

• How to contact support if none of the fixes work, and what details to include

Keep each template short enough that a writer can fill in every section for every page, without reaching for "N/A".

Examples of technical documentation

Stripe's API reference is developer documentation. The page opens with the base URL, links to official client libraries for seven languages (Ruby, Python, PHP, Java, Node.js, Go and .NET), and states that the API is organized around REST. It also routes non-developers to Stripe's no-code options near the top, which is the "name the reader" step from earlier, done in two lines.

MDN Web Docs is reference and tutorial documentation for web technologies such as HTML, CSS and JavaScript. It's written by a community of contributors, and every page links to its source file on GitHub with a "View this page on GitHub" link and a last-modified date. Anyone can see the history of a page and propose a fix, which makes MDN docs as code done in public.

The Google developer documentation style guide is process documentation. It gives "editorial guidelines for writing clear and consistent technical documentation" for an audience of software developers and other technical readers.

Start with the page your last release changed

Pick one feature your team shipped recently and open its help article or reference page. Click through the feature next to the page and mark every label, screenshot and limit that no longer matches. Fix those, then ask the developer behind the feature for a five-minute review. Last, note which signal should have told you the page needed changing (the merged PR or the support ticket, usually).

You now have a template for the next page and a reviewer you can call on again. If you'd like the tracing step handled for you, book a demo to see how Pageloop fits your documentation.

FAQ

What do you mean by technical documentation?

Technical documentation means the written material that explains how a product works and how to use it. For a software product, that includes help center articles, user guides, API reference, release notes, troubleshooting articles, and the internal process docs your team works from.

What are the four main types of technical documentation?

The four main types of technical documentation, in the Diátaxis framework, are tutorials, how-to guides, reference, and explanation. Tutorials teach a newcomer, how-to guides walk through a task, reference lists facts to look up, and explanation gives background. Another common split groups documentation into three types by audience: product or user documentation, developer or system documentation, and process documentation.

What is an example of a technical document?

An API reference page is an example of a technical document. Stripe's API reference lists each endpoint with its parameters, example requests and responses. A help center article that walks a user through connecting an integration, a set of release notes, and a troubleshooting article for an error message are technical documents too.

What makes good technical documentation?

Good technical documentation is accurate to the current product and written for a named reader. It uses the product's exact labels, keeps one action per step, defines jargon, and is checked by a subject matter expert before it goes live. It also has an owner and a way to find out when the product changes.

How do you keep technical documentation up to date?

You keep technical documentation up to date by connecting product changes to the pages they affect and reviewing each update before it publishes. Pageloop does this with an agent that watches merged pull requests, Linear and Jira tickets, Slack, and support conversations, then proposes updates across the affected pages for your team to approve.

How do I write technical documentation if I'm not a technical writer?

To write technical documentation without a technical writer, start from a template and gather facts from the person who built the feature. Write one action per step using the product's exact labels. Then have a subject matter expert check accuracy and a newcomer check that the steps can be followed. Pageloop drafts a first version from a plain-words description, a recorded flow or a screen recording, so the writing starts from an edit rather than a blank page.

Photo by Museum of New Zealand Te Papa Tongarewa on Unsplash
Mitre Peak, Milford Sound, 1880s, New Zealand, by William Hodgkins.