Make every chart easier to
trust and understand.
In-depth field guides for newsletter writers, data journalists, researchers, and analysts who need to choose the right chart, explain the math, cite the evidence, and publish on deadline.
Built around the work
From raw numbers to a defensible visual.
These are not three-minute glossaries. Each guide includes decision frameworks, worked examples, common failure modes, and copy-ready language your team can reuse.
- 01
Choose the visual
Start with the reader’s question and match the chart to the comparison—not to the software menu.
- 02
Transform responsibly
Make series comparable without hiding the scale, baseline, assumptions, or analytical tradeoffs.
- 03
Publish with provenance
Carry the source, method, date, and context into every newsletter, report, slide, and social export.
The library
Practical answers, all the way through.
Chart selection guide
How to choose the right chart type
Choose the right chart for any data story with a practical framework for trends, comparisons, rankings, proportions, relationships, and editorial publishing.
For newsletter writers, data journalists, analysts, and researchers
Read the complete guide →Indexing and rebasing guide
How to index data to 100 for a fair comparison
Learn how to rebase or normalize time-series data to 100, compare series with different units or starting values, and explain the result correctly.
For analysts, financial writers, researchers, and data-led publishers
Read the complete guide →Chart sourcing and editorial standards
How to cite data sources in a chart
Learn what belongs in a chart source line, how to cite transformed or combined data, and how to keep newsletter, report, slide, and social graphics traceable.
For data journalists, researchers, newsletter teams, and analysts
Read the complete guide →Chart accessibility guide
How to make charts accessible
A practical guide to accessible charts covering color contrast, color vision, labels, typography, alt text, data tables, mobile exports, and editorial testing.
For publishers, researchers, analysts, designers, and communications teams
Read the complete guide →No account required
Put the methods to work with free browser tools.
Choose a chart format or rebase a dataset to 100, then continue into a publication-ready chart when you need it.