How to Actually Use the Diana Lovejoy Sentence Length Tool
I first ran into this tool while editing a manuscript that was getting consistent notes about pacing being too dense. Someone had mentioned Diana Lovejoy's site as a way to visualize sentence length distribution across a draft. I tested it and it turned out to be useful enough that I've kept bookmarking it ever since. The website is straightforward: you paste your text into the box, hit the analyze button, and it breaks down your writing by sentence length in a simple chart. It also categorizes sentences as short, medium, long, or very long, and shows percentages for each bucket. You can download a CSV if you want to dig into the raw data later.
Getting Started with Diana LoveJoy Sentence Length
Go to dianalovejoy.com and paste your text into the main input area. The tool handles up to around 50,000 words without throwing errors, which covers most essays, articles, and short stories. Chapters of novels push it, but pasting one chapter at a time works fine. Once you hit Analyze, you get a bar chart at the top showing the distribution, then a table below with each sentence listed individually along with its word count. The breakdown buckets are: short (1 to 10 words), medium (11 to 20 words), long (21 to 30 words), and very long (31+ words). There is also a readability index calculated from Flesch-Kincaid, which is handy if you need that for academic or professional submissions. The CSV export includes sentence number, word count, character count, and the bucket classification. I use that for building my own dashboards in Google Sheets when I'm working on longer projects and want to track trends across multiple drafts.
What the Numbers Actually Tell You
Most people look at this and think they need more variety. That is not necessarily true. A piece with consistent sentence lengths can still read well if the content does the work. The tool is better used as a diagnostic for specific problems than as a general quality score. Here is what I look for: if more than 40 percent of your sentences fall into the very long bucket, your prose is probably going to feel exhausting to read. Not always wrong, just heavy. If over 50 percent are short sentences, your writing might read like a instruction manual or a children's book depending on the context. Neither is inherently bad. Both are worth noticing before you ship something. I found the most useful application for this tool is identifying patterns in technical writing. When I review documentation or white papers, I often see sentence length clustering around 25 to 35 words with almost nothing under 10. That creates a rhythm problem. Readers' eyes glaze out. Dropping a few sentences into the short bucket, even just 10 to 15 percent, changes how the text lands without altering the meaning.
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Edge Cases and Where the Tool Struggles
I ran into a real issue once where a client sent me a script with dialogue and stage directions. The tool counted stage directions in brackets as separate sentences, which threw off the whole distribution. Dialogue tags like "he said" also get split weirdly because the punctuation after them creates fake sentence boundaries in the output. The workaround is simple: strip out anything that is not actual prose before pasting. Remove the stage directions, the meta commentary, the headers, the footnotes. Just the body text. You can always go back and re-paste sections if you need to analyze dialogue separately. Another problem I noticed is with abbreviations and initials. Dr. Smith and Mr. Jones get counted as sentence ends because of the period. This inflates your sentence count and deflates your average word count per sentence. It is a minor distortion but it adds up fast in long documents with lots of titles. I usually run a quick find-and-replace to change Dr. to Doctor before pasting, which eliminates most of the false splits.
Alternatives When This Tool Falls Short
When I need deeper analysis, I move to other tools. ProWritingAid gives you sentence length data alongside grammar and style notes in one pass. Hemingway Editor does something similar with color coding. But neither gives you the raw CSV export or the clean breakdown that Diana Lovejoy's tool does. If I am doing a full edit I usually run Diana Lovejoy first for the baseline numbers, then feed the text into whichever editing suite I am already using for the rest. The free version on the website has no account requirement and no word limit that matters for normal use. The premium version adds things like genre-specific benchmarks and trend tracking across multiple uploads, which is nice if you work in a single voice over time. I have not paid for it. The free version does what I need.
Practical Workflow for Using This Tool
I paste my draft, run the analysis, then look at three things in order. First, the percentage breakdown of the four buckets. Second, any sentence over 50 words, because those are the ones that will make readers skip ahead. Third, the Flesch-Kincaid score for readability context. Then I do one pass through the document looking only at sentences I flagged as too long or too short. I rewrite or split them. I do not try to hit some perfect mathematical distribution. I just try to make the text easier to read. After that I re-paste and compare the numbers. Usually the first pass moves 15 to 25 percent of my sentences into a different bucket. The second pass usually settles things out. I have used this same process on blog posts, academic papers, marketing copy, and internal documentation. The results are consistent enough that I keep it in my regular editing workflow instead of treating it as a one-time check.
Where to Download or Access the Diana Lovejoy Sentence Length Tool
The tool lives at dianalovejoy.com and there is no software to install or app to download. You paste text directly into the browser. There is also a downloadable spreadsheet template on the site if you want to do your own calculations instead of using the automated breakdown. The template works fine if you prefer to run your own formulas or integrate with other spreadsheets. For people who want offline access, the only option is the CSV export. The tool does not offer an API or a bulk processing feature, so batch analysis of multiple documents requires manual pasting. This is slow if you have a lot of text to process, but for individual pieces it is fast enough that it does not really matter.
