Bar Graph Maker

Builds a bar chart from data typed into a table — rows become categories, columns become series — and exports it as PNG or SVG. Multiple series, axis labels and a colourblind-safe palette are handled automatically rather than needing separate configuration.

When a bar chart is the right choice

Bar charts are for comparing discrete categories against each other — sales by region, votes by candidate, scores by team. They're the most reliably readable chart type because comparing bar heights is something people judge accurately, unlike comparing angles (pie charts) or areas.

Multiple series

Adding a second or third column puts grouped bars side by side within each category, useful for comparing the same categories across different conditions — this year vs last year, actual vs target, by region and by product line at once. Up to six series are supported, each assigned a distinct colour from a palette checked for separation under the common forms of colourblindness.

PNG vs SVG export

PNG suits slides, reports and anywhere a fixed image is expected. SVG is vector, so it can be scaled or edited in a vector tool afterward without any loss of quality — the better choice if the chart needs further editing or will be printed large.