Text Tools·4 min read

Word Clouds: When They Work and How to Make One

A word cloud turns a pile of text into a picture where the words used most are drawn largest. Done well, it gives a room full of people the gist of a survey or a speech in two seconds. Done badly, it is a jumble of the and very with the real themes lost in the middle. This guide explains how word clouds are built, where they genuinely help, the settings that make them readable, and when you should reach for a bar chart instead.

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How a word cloud is built

Count, scale, place.

Every word cloud starts as a word count. The text is split into words, common function words are removed, and each remaining word gets a tally. The most frequent words, up to a limit, go into the cloud.

Next, each count becomes a font size. The simplest method makes size proportional to count, which exaggerates the top word. Taking the square root of the count gives a more balanced picture, and a logarithm flattens the differences further so rare words stay readable. The Word Cloud Generator offers all three as Size contrast: Strong, Balanced and Gentle.

Finally the words are placed. The largest word goes near the centre, and each following word moves outward along a spiral until it finds a spot where it does not overlap anything already placed. If the words would cover too much of the canvas, every size shrinks together so that everything fits.

Where word clouds genuinely help

Themes at a glance.

Word clouds are at their best when the audience needs the general shape of a text, not exact numbers. Open-ended survey answers are the classic case: a few hundred responses to what should we improve become a single slide where delivery and price jump out. Workshop notes, customer reviews, event feedback and interview transcripts work the same way.

They are also useful as a check on your own writing. Paste a draft article and see whether the topic words dominate. If the largest words are really and things, the draft is vaguer than you thought.

Settings that make a word cloud readable

Less is clearer.

Most unreadable clouds have the same problems: too many words, filler words left in, and colours that fight each other. A few settings fix almost all of it.

Keep common words out. Leave out common words should stay ticked, and add the question's own words, such as product or service, to Also leave out.
Cap the word count. 50 to 100 words is usually plenty for a slide. Past that, the smallest words are too small to read.
Use a gentle size contrast for long lists, so the tenth word is still legible next to the first.
Keep words horizontal for presentations. Vertical words pack more tightly but are harder to read at a distance.
Pick one colour family. A set of related blues or greens looks calmer than a rainbow and still separates neighbouring words.
Match the canvas to where it goes: a square for social posts, a wide slide for presentations, a tall story format for phones.

A worked example: turning survey answers into a slide

From spreadsheet to picture.

Say you ran a customer survey with the question What did you like about your order, and 300 people answered. Copy the answers column from the spreadsheet and paste it into the Word Cloud Generator, one answer per line.

The first cloud shows order, delivery and fast at the top. Order is the question's own word, so add it to Also leave out. Now fast, delivery, price, easy and support lead, which is the real story. Set Max words to 60, pick the Ocean colours, choose Slide 1920 x 1080 and press Shuffle layout until the biggest words sit comfortably in the middle. Download the PNG for the slide deck, and download Word counts CSV so you can quote the exact numbers when someone asks.

When to use a bar chart instead

Precision beats pictures.

Word clouds are poor at comparison. Readers judge importance by the area a word covers, so long words look more important than short ones with the same count, and nobody can tell 42 mentions from 38 by font size alone. If a decision depends on the ranking, show the numbers.

A simple bar chart of the top ten words, made from the Word counts CSV, answers how many times without any guessing. The Word Frequency Counter gives the same ranking with percentages and two or three word phrases, which often explain more than single words do: fast delivery says more than fast and delivery apart.

PNG or SVG, and keeping data private

The practical bits.

PNG is an ordinary image at the canvas size you picked, ready for slides, documents and social posts. SVG is a vector file, so it stays sharp at any size and can be edited in design tools, which suits posters and print. Choose a transparent background if the cloud will sit on top of a coloured slide, and the Light colour set if that slide is dark.

Survey answers and customer feedback often contain names and personal details. The Word Cloud Generator counts and draws everything in your browser, so the text is never uploaded, which makes it a safe place to work with internal data.