The question is not how much to cut, but what to cut.
Cut until each remaining sentence carries a clear purpose. Delete any sentence where the message does not weaken; that sentence should go. But do not delete evidence and context, as without it, the reader cannot make informed decisions.
Conciseness does not mean being short at all costs. What needs to be removed is unnecessary words, not information. These two tasks are completely different, and confusing them is the reason many documents become empty and lack impact after being "edited for brevity."
Redundant text is what repeats ideas already stated, expresses in a roundabout way what could be said directly, or takes on a polite, formal form that adds no meaning. Essential information is what the reader needs to understand the reasoning behind a recommendation and make decisions without needing further explanation.
Principles of practice from Federal Plain Language Guidelines challenge every word: what is this word doing, if removed, does the sentence become weaker? If not weaker, remove it. If weaker, keep it.
Cut harshly, without regret: The opening sentence leads into the topic but does not say anything about the reader. The section repeats the idea just presented in the previous point. Polite phrases at the beginning and end of the page. Filler phrases like "It can be seen that," "As mentioned above," "Generally speaking."
Moving to an appendix, not deleting entirely: Detailed data and methods that only part of the readers need to verify. Lengthy evidence while the main part only needs a conclusion. Background context that readers can look up separately if desired.
Keep it in the main section: Evidence supporting the recommendation. The context that, without it, the reader may not understand why that decision is correct. Numbers or specific examples make the abstract message tangible.
Nielsen Norman Group notes that online readers and lengthy documents often skim first, reading deeply later if they find it relevant. The longer the sentence, the denser the paragraph, the higher the chance of being overlooked. This does not mean writing very short but rather writing so that the most important parts stand out immediately when the reader skims, not buried in a dense paragraph.
Practical application: place conclusions or recommendations at the beginning of the paragraph, with supporting details following. This is known as pyramid writing, where the most important information is at the top, with additional details descending.
Each layer in the tower can only exist if it supports the layer above. The part that does not support the main point is what should be cut or moved elsewhere.
Barbara Minto, The Pyramid Principle
When Sinh Vũ refines content for brand documents, the first task is to rewrite the opening sentence of each page, as that is often the longest and the deciding factor for whether the reader continues. The second task is to read each paragraph and ask: does this paragraph serve the main message of the page? If not, where does it belong, in the appendix or the trash?
What Sinh Vũ retains is what creates the right directional decisions for the reader, not just what makes the documents look full or what reassures the writer that they have said enough. These two things are not the same.
Topic: How far to cut the lengthy parts to avoid losing information. Sinh Vũ Handbook, sinhvu.com
Select each item you find appropriate, then print or save as PDF to take with you.
If you have marked most of the signs above, this is the time to discuss in more detail. Sinh Vũ can help you review and propose a direction.
plainlanguage.gov, Federal Plain Language Guidelines. Nielsen Norman Group, Concise, Scannable, and Objective. Barbara Minto, The Pyramid Principle.
A convoluted opening sentence is the first candidate for strong cuts. The truly necessary context is what helps the reader understand why this page is relevant to them. If the opening sentence only leads into the topic without conveying that, then remove it and place the main message upfront.
Not necessarily. Detailed data and methods that only a few readers need should be moved to an appendix instead of being completely removed. The main section should still provide enough information for readers to make quick decisions, while those who want to delve deeper can find additional resources.
The clearest sign is when documents appear empty and unconvincing, and the reader has to ask for clarification to understand the reasoning behind a recommendation. If someone finishes reading and cannot make a decision without you sitting beside them to explain, then the evidence and context have been cut too much.