Four vertical bars showing retainer revenue rising across 2025, each labelled with its value.

A clean column chart for a handful of periods, with values printed on the bars.

Labelled bar chart

A retention heatmap with three signup cohorts down the side and months across, shaded darker where retention is higher.

The triangle chart every SaaS deck needs: cohorts down, periods across, retention shaded.

Cohort retention heatmap

A four-stage funnel narrowing from 12,400 pricing page visits to 610 paid customers, with the largest drop annotated.

Stage-by-stage drop-off with both the counts and the percentage lost at each step.

Conversion funnel

Two survey questions shown as diverging stacked bars, with agreement extending right of centre and disagreement left.

Likert answers centred on neutral, so agreement and disagreement read as opposite directions.

Survey results, diverging

A scatter plot of team size against features shipped with a faint trend line, and one team labelled as an outlier below it.

A correlation plot that makes its point by labelling the one dot that breaks the pattern.

Scatter with the outlier called out

Four small line charts in a grid, one per region, all sharing the same vertical scale.

One little chart per category on a shared scale — the honest way to show many trends at once.

Small multiples

A treemap of web traffic by channel, the largest block at the top left.

A treemap for composition — readable where a pie chart with nine slices is not.

Share of total

A rising line of actual values continuing as a dashed forecast inside a shaded uncertainty band.

History as a solid line, projection as a dashed line inside a shaded uncertainty band.

Trend with a forecast band

A waterfall chart bridging opening to closing ARR through new business, expansion, contraction and churn.

How a number got from last period to this one, one contribution at a time.

Waterfall bridge

Three bullet bars showing actual counts against target ticks, with signups and paid users below target and activated users above target.

Bullet bars: where each metric landed against the number it was supposed to hit.

Target versus actual

An architecture diagram with client, service and data tiers, arrows labelled with the protocol between each component.

Boxes and arrows for a service: clients, services, stores, and what talks to what.

System architecture

A sequence diagram of an OAuth sign-in across browser, app, provider and token store, including a branch for the denial path.

A sequence diagram for one flow: who calls whom, in order, including the failure path.

Request sequence

A state diagram for a job moving between queued, generating, ready, failed and cancelled.

Every state a thing can be in, and the events that move it between them.

State machine

An entity relationship diagram linking workspace, folder, document and version with cardinality markers.

Tables, their key fields, and the cardinality between them.

Entity relationships

A top-to-bottom flowchart for bug triage with reproducibility and severity decision diamonds.

A flowchart with real decision diamonds, for a process someone has to follow.

Decision flow

An org chart with a head of product above design, engineering and research leads, engineering branching into three teams.

Reporting lines, drawn so a new joiner can find who owns what.

Org chart

A mind map centred on launching a developer tool with positioning, docs, distribution and pricing branches.

A central idea and its branches — for planning, notes, or explaining a topic's shape.

Mind map

A swimlane roadmap with platform, web and growth lanes across four quarters, uncertain items drawn softer.

What each team is doing per period, on one page, without pretending the dates are certain.

Roadmap swimlanes

A network graph with public and private subnet clusters, edges labelled with ports from the load balancer to the database.

A graph whose layout genuinely needs a solver — nodes, links, and clusters.

Network topology

A left-to-right user journey from landing to download, with the low point marked.

The steps someone takes, with how each one feels marked alongside.

User journey

A concept map for HTTP caching branching from prerequisites through cache keys and freshness to revalidation and CDN behaviour.

A hierarchy for teaching: the big idea broken into what you must understand first.

Concept map

A before-and-after diagram with a monolith on the left and a queued worker architecture on the right, additions marked.

Two versions of the same structure side by side, with what changed marked.

Before and after

Three statistic cards in a row under a heading, each with a large figure and a line of context.

A row of headline numbers as cards — figures pulled out of a report and made readable.

Stat cards

A horizontal timeline with five dated milestones alternating above and below the spine.

A horizontal spine with dated milestones — a history, a roadmap, or a process over time.

Timeline

A two-column comparison across four criteria, with a divider down the middle.

Two options side by side across the same criteria, without a winner declared for you.

This versus that

Four numbered blocks in a row, each with an icon, a label and a line of explanation.

A process as three to five numbered blocks, each with an icon and one line of explanation.

Numbered steps

A central object with five callout lines running to labelled parts arranged around it.

One central object with labelled callout lines pointing at its parts.

Anatomy of

A portrait poster with one large headline figure above a grid of supporting statistics and a source line.

A poster-shaped summary: a headline figure, supporting stats, and a source line.

By the numbers

A square quote card with a centred pull quote and a right-aligned attribution beneath it.

A pull quote with attribution, sized for social — text-accurate, not decorative.

Quote card

A wide flat illustration of a drafting table seen from above covered in technical drawings, with open space to one side.

A wide header image for an article, built around one concrete subject.

Blog cover

A hand-drawn cover titled "The four caches in LLM serving" showing the KV, prefix, prompt and semantic caches as labelled pictograms, bracketed into exact match and fuzzy match groups.

A hand-drawn explainer cover: marker title, a few labelled concepts, and how they relate.

Sketchnote cover

A paper aeroplane folded from a printed chart flying across a plain coloured background.

A card for a link preview, composed to survive being seen at thumbnail size.

Social share card

A watercolour hero image of finished charts and diagrams fanned across a desk, offset to one side.

A landing-page hero that shows the product's outcome rather than a metaphor for it.

Hero illustration

A crayon-textured illustration of a tidy room whose cupboard door is held shut by a chair.

A picture for an abstract idea, anchored to a physical scene so it is not generic.

Concept illustration

A wide low-contrast watercolour band of drafting instruments and faint grid lines.

A slim decorative band to break up a long document, quiet enough not to steal attention.

Section divider

Four ranked bars for programming languages reordering across four years.

Ranked bars reordering over time — the format that made data animation popular.

Bar chart race

A line chart drawing itself across eight months, pausing to show an annotation partway.

A trend revealed left to right, so the shape lands before the numbers do.

Line that draws itself

A four-item ranked list rearranging from one year's order to the next, with rank changes marked.

A before-and-after list that rearranges itself, so the movers are impossible to miss.

Ranking shuffle

An animation of linear search comparing array values until it finds 8, captioned at each step.

An algorithm shown one comparison or move at a time, with each step captioned.

Algorithm walkthrough

A staged animation of a cache miss fetching from origin, storing the entry, then serving a later request locally.

An abstract mechanism animated into something you can watch.

Concept in motion

A right triangle with vertices lettered and its three side lengths marked.

A clean geometric construction with sides, angles and given quantities marked.

Labelled geometry figure

A parabola plotted from −3 to 3 with two roots and its vertex annotated.

A curve with its interesting points called out — roots, turning points, asymptotes.

Annotated function plot

A free-body diagram of a block on a flat surface with balanced weight, normal, push and friction vectors.

An object with every force drawn as a labelled vector, to scale with each other.

Free-body diagram

A two-by-two effort against impact matrix with four named quadrants and items placed in them.

The quadrant grid, with the axes actually labelled at both ends.

Two-by-two matrix

A five-layer stack from storage at the bottom to client at the top, each band labelled with its responsibility.

Horizontal layers from the bottom up, each labelled with what it is responsible for.

Every kind of visual, with the sheet that made it.

Or just describe what you want.