Technical Writing Best Practices: Sentences, Style, and Ruthless Clarity
Clear technical communication rarely happens by accident. It's the result of dozens of small, deliberate decisions — to cut a redundant clause, to swap a vague noun for a precise one, to name the same concept the same way every time. Individually these choices seem minor. Together they determine whether a reader breezes through your document or gives up halfway and files a support ticket.
This article collects the technical writing best practices that consistently separate professional documentation from the merely adequate. They apply whether you're writing a README, an API reference, or an internal runbook. For the wider discipline see our beginner's guide to technical writing; here we focus specifically on the craft of clear communication at the sentence and document level.
Clarity Is a Choice You Make Sentence by Sentence
Every sentence you write imposes a cost on the reader: they must parse it, hold it in memory, and integrate it with what came before. Clarity is simply the discipline of minimizing that cost. A dense, subordinate-clause-laden sentence that a reader must reread twice has failed, however grammatically correct it is. Your job is to make the meaning land on the first pass.
Practically, that means favoring shorter sentences, one main idea per sentence, and concrete words over abstract ones. It means cutting throat-clearing openers ("It should be noted that…") and hedging that adds nothing ("basically," "in order to," "at this point in time"). None of this makes your writing simplistic — it makes it efficient, which for a reader mid-task is the highest compliment you can pay.
Plain Language and the Active Voice
Plain language is an international movement, not just a preference — there's even an ISO standard (ISO 24495-1) defining its principles. The core idea is to write so your intended reader understands the first time. Choose common words over showy ones, define unavoidable jargon on first use, and prefer verbs over nominalizations ("decide" beats "make a decision," "configure" beats "perform configuration of").
The active voice is plain language's workhorse. "The server rejects the request" is clearer than "the request is rejected by the server" because it names the actor and follows the natural subject-verb-object order English readers expect. The active voice also forces you to specify who does what — which is exactly the precision technical instructions require. Google's widely used developer style guidance on voice makes the same case with excellent examples. For more on structuring the content these sentences live in, see our guide to navigable documentation structure.
Consistent Terminology Builds Trust
Nothing erodes a reader's confidence faster than inconsistent terminology. If your product's primary object is called a "project" on one page, a "workspace" on another, and a "container" in the API reference, readers can't tell whether these are three things or one. They stop trusting the document and start guessing — the opposite of what documentation is for.
Fix this with a terminology list, sometimes called a glossary or termbase: a single authoritative table of your product's terms, their approved wording, and terms to avoid. Decide once whether it's "log in" (verb) and "login" (noun), whether you write "email" or "e-mail," and whether a feature is capitalized. Then apply those decisions everywhere. Automated linters like Vale can enforce terminology and style rules in your docs pipeline, flagging violations the way a code linter flags bugs.
Writing for a Global, Non-Native Audience
A large share of the people reading English documentation are not native English speakers, and many docs are machine-translated. Writing with a global audience in mind improves clarity for everyone. Keep sentences short, avoid idioms and cultural references ("piece of cake," "ballpark figure"), and steer clear of phrasal verbs where a single verb works ("submit" rather than "send in").
Be explicit rather than clever. Ambiguous pronouns, humor that depends on wordplay, and negatives stacked in one sentence ("do not fail to disable") all trip up non-native readers and translation tools alike. Consistent terminology helps here too, because translation memory systems work far better when the source text repeats the same phrasing. The Microsoft and IBM style guides both include strong guidance on writing for global readers if you want to go deeper.
Adopt a Style Guide, Then Enforce It
Best practices scale only when they're written down and applied consistently. Rather than negotiating every comma, adopt an established style guide as your foundation. The Google developer documentation style guide, the Microsoft Writing Style Guide, and the IBM Style guide are all comprehensive, free, and widely respected. Pick one as your base and add a short house-style supplement for your product-specific decisions.
Enforcement is where the value is realized. Reference the guide in code review, run a linter like Vale in continuous integration to catch violations automatically, and onboard every new writer with it. The point isn't rigid conformity for its own sake — it's that a shared standard removes hundreds of tiny decisions from every writing session and makes a whole team's output read as one consistent voice.
Edit Like a Professional
First drafts are for getting ideas down; clarity is created in editing. Professional editing happens in passes, each with a single focus. First, edit for structure: is the information in the right order, and does each section do one job? Then edit for clarity at the paragraph and sentence level: cut redundancy, tighten wording, fix passive voice. Finally, proofread for mechanics — spelling, links, code accuracy, and formatting consistency.
The most powerful edit for procedural content is to follow your own instructions literally, doing exactly and only what the steps say. Gaps and wrong assumptions surface instantly. If you want a repeatable editing system, Darlo Technical Writing's Clear Technical Communication course teaches a multi-pass editing workflow and comes with a downloadable style-guide checklist you can adapt for your own team. Explore it alongside our other craft courses at /courses.
The Clear-Writing Style Checklist
A one-page downloadable checklist covering active voice, plain language, terminology, and global-audience rules — run it over any draft before you publish to catch the common clarity killers.
Should technical writing always use the active voice?
Almost always, because it names the actor and reads more directly. The main exception is when the actor is unknown or irrelevant — for example, "The file is created automatically" is fine when who creates it doesn't matter to the reader. Use passive deliberately, not by default.
What is the best style guide for a beginner?
The Google developer documentation style guide is an excellent free starting point — it's thorough, modern, and full of clear examples. Microsoft's and IBM's guides are equally strong. Pick one, learn it well, and add a small house style for your own product's terms.
How do I make my writing easier to translate?
Keep sentences short, use consistent terminology, avoid idioms and phrasal verbs, and be explicit rather than relying on humor or wordplay. These habits help both human translators and machine translation, and they make your English clearer for non-native readers too.