Excel CSV, an opt-in right y axis, time zones, axis options and downsampling for large data
Excel CSV: a header row (first column is xAxis.title, or 'Label'), dates as local 'YYYY-MM-DD' ('YYYY-MM-DD HH:mm' when there are times of day), raw numbers; fixed a doubled BOM on download
Right y axis: only when a series has axis: 'right' (default behaviour unchanged). y2Axis sets its format, unit (unit, prefix) and title; its ticks line up with the left grid; tooltips and the table use each series' own axis format; the legend marks it (R)
timeZone option (an IANA name such as 'Asia/Seoul') for reading and writing dates on axes, tooltips, tables and CSV, so renderToSVG on a UTC server no longer shifts days
Axis options: integer (whole-number ticks), step (tick step), reverse (rank axes; the category order for horizontal bars), and '\n' in a category label makes two lines
downsample: line and area charts with more than 2,000 points are thinned with LTTB to about the plot width (a number sets the count, false turns it off); tooltips work on the kept points, CSV and the table keep all data
New locale strings csvLabel and rightAxis; formatDate takes a time zone argument
v0.1.0
First release: eight chart types, Korean units, card skin, zoom, export, accessibility, server rendering
Charts: line, area, bar (grouped, stacked, 100% stacked, horizontal, negative), pie, donut, scatter (bubble), radar and gauge, plus combos by giving series their own type
Card skin: eyebrow, title, subtitle, headline value, change badge (semantic or Korean colors) and footnote; sparkline and plain skins
Korean numbers and dates: 1.2만 / 3.4억 on axes, full numbers with commas in tooltips, scale + unit ('백만원'), prefix, decimals, date patterns (dateFormat) with weekdays
Data: number arrays, [x, y] pairs and { x, y, r } points, automatic time axes, null handling (gap, connect, zero)
Interaction: shared crosshair tooltips, legend toggles, zoom and pan (drag, Ctrl+wheel, pinch, keyboard), annotations (lines and bands), linked charts (group)
Export: PNG, SVG and CSV downloads and a table view in the menu; toPNG(), toSVG(), toCSV(), download()
Accessibility: an automatic summary (aria-label), keyboard reading, a hidden data table, reduced motion and high-contrast support
Themes: auto, light and dark, --c82-* CSS variables, default, korea and mono palettes
renderToSVG: the same SVG on a server (Node, Cloudflare Workers) without a DOM
The <chart-82> web component, React, Vue, Svelte and Angular wrappers, a CDN build (global Chart82), Korean, English, Japanese and Chinese strings, zero dependencies