Guide

1. Prepare the sheet

• Put column names in row 1 and data from row 2.
• Remove title rows, merged cells, and total rows so only the table remains.
• xlsx, xls, and csv are supported, up to 10 MB, 100,000 rows, and 100 columns.
• Dates like 2025-01-03, 2025.01.03, and 20250103 are recognized.

2. Upload

• Drop the file on the sheet on the start screen, or click Choose file.
• If the workbook has several sheets, switch with the dropdown next to the file name.
• First time? Click Try with sample data to explore a sales example.
• If something is wrong, a message at the top explains why and how to fix it.

3. Check column types

Each column gets a type automatically. Open Column types to check them and change any wrong guesses; the dashboard redraws right away.

• Columns named like price, quantity, stock, or sales are treated as key metrics and used first in trends.

Number

Values you sum or average (sales, quantity, price)

Date

The time axis for trend charts

Category

Groups such as region or product. Free text is a category by default

Yes/No

Two values like Y/N, shown as a rate

Excluded

Columns like idx, no, id, row numbers, or order IDs (detected automatically)

Text

Free text you want left out of analysis

4. Explore the dashboard

• Click a tab, or focus a tab and move with ←/→.

Overview

One-screen summary: key KPIs, key metric trend, metric comparison, top bars and frequencies, top-10 table

KPIs & stats

Every KPI card, descriptive statistics, category summary

Charts

The 8 highest-scoring charts

By column

Every chart each column supports

5. Change KPI statistics

Pick the statistic in the dropdown next to a KPI card title. Your choice applies across tabs.

• For sum, mean, and count, the card also shows change vs the previous period and a 12-period trend line.

Number columns

Sum, mean, median, min, max, std dev, count, missing

Category columns

Most common, unique values, missing

6. Read the charts

• Hover a chart to see exact values.
• Click Show table at the top right of a chart to see the same values as a table.

Light line / dark line

Actual value / moving average (trend)

Grey "In progress" band

A final period with partial data, left out of change calculations

First period = 100

Compares metrics with different units on one axis. 120 means 20% higher than at the start

Other

Everything outside the top items combined (grey bar)

7. Undo and saved settings

• After changing a column type or KPI statistic, use ↶ Undo and ↷ Redo.
• Your settings (column types, KPI statistics, PDF items) are saved on this device. Cell values are never stored.
• Upload a file with the same columns and your saved settings are reapplied. Click Undo in the notice if you don’t want them.
• To move settings to another device, use Export settings, then upload the same file there and use Import settings.

8. Download a PDF

1. Click Download PDF at the top right.
2. Tick the KPIs, charts, and tables to include. The first time, the current view is selected; after that, your last selection is kept.
3. Click Create PDF to save it as A4 landscape.

• Tick a group name to select the whole group. Charts by column are in the collapsed list.
• A chart that appears in several views is included only once.
• PDFs always use the light theme and are images of the page, so text can’t be selected or searched.

9. Language, theme, and shortcuts

• Switch between 한국어/English and System/Light/Dark at the top right; your choice is remembered. Your data (column names, cell values) is never translated.

Ctrl+Z / Ctrl+Shift+Z

Undo / redo (Cmd on Mac)

← → Home End

Move between tabs

Esc

Close an open dialog

Tab

First press: skip to content

10. Your files and privacy

Files are never sent to a server; analysis and PDF creation happen in this browser. Nothing from the file remains after you close the page. Only your language and theme choices and your settings are kept on this device, and you can delete them all from the Privacy Policy page.