Prepare the structure
Paste CSV/TSV or import an Excel workbook, choose its sheet and inspect the grid. Map categories and series, then check the shape required by the selected chart family.
Paste your criteria and scores and get an exact radar chart — every axis plotted to the value you entered.

A radar chart — also called a spider chart or a web chart — plots several measures on axes radiating from a common centre, then joins the points into a shape. It is the right chart when you are comparing a small number of entities across the same set of criteria: two vendors on eight evaluation dimensions, three candidates on the same scorecard, this quarter's capability profile against last quarter's.
Inspect an actual output, then use the appropriate maker for your own data shape. Structured charts, diagrams and composed artwork offer different editing tools and export options.
A current Prism render from explicitly supplied fictional inputs. Inspect the full-size output, original request and rendered HTML together.
Criterion,Option A,Option B Coverage,80,65 Ease,60,85 Control,90,70 Portability,75,80 Support,70,75
Fictional demonstration data, not customer results. Check labels, units, branches and all supplied values before reuse.
Paste CSV/TSV or import an Excel workbook, choose its sheet and inspect the grid. Map categories and series, then check the shape required by the selected chart family.
Choose legible type, deliberate colors, labels and units. Bold is the default for new visuals; a saved or explicitly selected theme remains yours. Check figures against your source and inspect retained data after a chart-type change.
Read the chart data table or diagram labels, add appropriate alternative text and inspect the actual export. Review and publication permissions are separate from clean-output download rights.
Inspect an imported workbook's sheet and cells, edit the data grid and choose series and category mappings. Chart-specific shape checks, axes, numeric formatting, labels and legends affect the reading. Review alternative text, long descriptions and the data table. A changed chart type can retain data that needs reshaping.
Review nodes and branches, Mermaid interchange and saved revision comparisons for structured diagrams. Compositions can combine visual blocks with brand type and colors. Their editing tools differ from those used for structured charts. Connected data controls offer bounded filtering, sorting, column selection, row limits and supported calculated columns; inspect a refresh before accepting changed source values.
Campaign kits support channel choices, sized artwork, photos and crops, captions, selected-channel regeneration and review of edited copy. Print controls cover copy, layout, photo placement, fit, density and proof checks. Print supports English, Germanic, Latin, Cyrillic, Arabic, Indian, Chinese, Korean and Japanese language/script groups. Inspect the actual export and destination requirements.
Color and preflight options are checks with defined scope, not accessibility certification. Structured SVG editability does not imply that composed raster artwork has the same editing model.
Each point sits at the value you entered along its axis. Nothing is normalised behind your back to make the shape more pleasing.
A spider chart invites misreading, because area grows with the square of the radius. Prism renders each series to the exact values you supply and labels every series, so the shape is never a guess — state your axis range in the title or caption.
The web chart is drawn to SVG from your figures, not generated as an image, so the geometry matches the data every time.
Use a bar chart when precision matters — the eye compares lengths far better than it compares polygon shapes. Use a radar chart when the pattern across criteria is the message: which vendor is balanced, which is spiky, where a candidate is strong and weak. Keep the number of entities small; three overlapping shapes is usually the limit before a web chart becomes unreadable.
Paste each criterion with a score per entity, or upload the CSV from your evaluation.
Decide whether axes run zero to ten, zero to one hundred, or to your own maximum, and put that range in the title. Prism does not draw ring values, so the range has to be stated in words.
Check each axis back against your scoring sheet, then export as SVG.
A radar chart is one of 22 chart types Prism renders. See the full set on the chart maker overview.
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