Local-first chart tools

Create clear charts from CSV, Excel, JSON, and tables

Paste your data, get chart recommendations, fix common chart issues, and export clean visuals for reports, articles, and presentations.

Start with CSV Get chart recommendations

Start with CSV opens the live demo below. Get chart recommendations opens the full recommender page.

ChannelSessionsConversions Organic12,400620 Direct8,400392 Email3,600288

93quality scorePNG / SVG / Markdown

Guided demo

Import, inspect, recommend, audit, and export in one flow

1Upload DataPaste, upload, or load a sample
2Check & DescribeReview fields and data quality
3VisualizeChoose and refine the chart
4Publish & ExportCheck context and download

Chart ready

Loaded sample: Website traffic by channel as CSV

Data converter5 rows96/100 score

Browser-side processingNo account requiredUse small, non-sensitive datasets

Steps 1-2

Upload and check data

Sample dataset

CSV or pasted tableUse a header row followed by one row per item. Commas, tabs, and copied spreadsheet rows are accepted.

Month,Revenue
Jan,12400
Feb,13850

Field inspectorOverride a type when the automatic detection is wrong.

ChannelSessionsConversions

5rows

3fields

100%filled

0issues

First row contains field labels

5 parsed row(s)

Upload fileCSV, TSV, JSON, Markdown, or XLSXProcessed in your browser. No file selected

Website traffic by channel gives CSV to Chart a different data shape for checking recommendations, controls, and exports.

Step 3

Visualize

Preview: Auto

Chart titleSource or unit noteShown under the chart title and included in exports.

X fieldY fieldSeries fieldValue fieldAggregateSortTop NTheme Value labels Direct series labels Max/min

Insight note

Band startBand endBand note

Watermark

Theme

Exports use report 1200x800 with the current title, source note, chart view, and watermark.

Chart viewChoose a view for this preview.

Auto: Use the best default for the current page and detected fields.

uchartx.com

Channel: categorySessions: numberConversions: percent

Step 4

Quality score

96/100

ReadyData, mapping, context, and export checks look ready to review.

How this score is calculated

Six checks total 100 points: data readiness 20, field mapping 15, chart fit 20, labels and context 15, accessibility and color 15, export readiness 15. Parse issues and chart-shape mismatches reduce the total.

Data readiness20/20

info

5 rows and 3 columns parsed.

Fix: Remove empty rows, duplicate headers, and values that cannot be parsed.

Field mapping15/15

info

2 numeric field(s), 1 category field(s), and 0 date field(s) detected.

Fix: Map at least one category or date field and one numeric field.

Chart fit20/20

info

CSV to Chart is intended to paste csv or tsv data and get chart recommendations.

Fix: Use the recommended chart list if the current chart type does not match the data shape.

Labels and context11/15

warning

Default title; context present.

Fix: Use a specific chart title and add a source, unit, or time period before export.

Accessibility and color15/15

info

Category count is within a readable range.

Fix: Group small categories, use direct labels, and avoid color-only meaning.

Export readiness15/15

info

Exports should only be used after a chart is rendered with a reviewable title.

Fix: Load valid data, review the title, and choose the output size before exporting.

Data preview

Filter preview rows

Channel	Sessions	Conversions
Organic Search	12400	620
Direct	8400	392
Referral	4200	144
Email	3600	288
Paid Social	3100	117

Import

Paste or upload small tables and inspect the detected field types before charting.

Recommend

Use transparent rules to pick charts that match the shape and purpose of your data.

Audit

Check labels, scale, color, data quality, accessibility, and export readiness.

Tool groups

Online Chart MakersChoose a chart type and build a clear visual from small data.Explore group Data to Chart ToolsTurn CSV, Excel, JSON, Markdown, or pasted tables into charts.Explore group Report ToolsCreate KPI cards, mini reports, and scenario summaries.Explore group Chart Audit ToolsCheck labels, axes, color, accessibility, and misleading chart risks.Explore group

Featured tools

CSV to Chart Paste CSV or TSV data and get chart recommendations. delimiter detection, field typing, and CSV issue checks Bar Chart Maker Compare values across categories with sorting and Top N controls. Top N ranking, horizontal toggle, and axis label audit Chart Audit Checker Score a chart for labels, axes, data, color, and export readiness. 100-point score with severity and suggested fixes KPI Card Generator Create a KPI card with value, target, delta, and status. target comparison, status copy, and mini trend

Templates for common reports

Survey Results Report TemplateSummarize responses, top answers, and key takeaways.Open template Website Traffic Report TemplateReport sessions, channels, and conversion signals.Open template Revenue Trend Report TemplateShow monthly revenue, cost, and change.Open template Marketing Funnel Report TemplateExplain visits, signups, trials, and purchases.Open template

Local-first

Core chart creation runs in your browser for small datasets and does not require an account.

Export-ready

Exports include the chart title, source context, selected chart type, and review notes.

Reviewable

The score explains data, mapping, chart fit, labels, accessibility, and export readiness.

Learn before publishing

How to Choose the Right ChartMatch the data structure and reader task before styling a chart.Bar Chart vs Line ChartChoose between comparing categories and showing movement over time.Pie Chart vs Donut ChartUnderstand when part-to-whole charts are readable.How to Visualize Survey ResultsTurn counts and ratings into readable summaries.How to Avoid Misleading ChartsReview scales, proportions, labels, and context before publishing.Chart Accessibility ChecklistMake charts easier to read for more people and devices.