Do I need an account to convert a chart to an image?
No. The studio, the previews, and the SVG and PNG downloads all work without signing in.
Turn chart data into an image file
Paste your labels and values, choose a shape, and take away a picture. No screenshotting a dashboard, no cropping, and no waiting for a design pass.
- No account to start
- Download or link
- Same image every time
URL
https://www.plotlark.com/api/chart?type=bar&title=Deploys+per+month&labels=Jan%2CFeb%2CMar%2CApr%2CMay%2CJun&values=12%2C19%2C14%2C26%2C31%2C28&width=900&height=520&color=%238595e8&background=%23fffdf8&grid=true&valuesOn=trueHTML
<img src="https://www.plotlark.com/api/chart?type=bar&title=Deploys+per+month&labels=Jan%2CFeb%2CMar%2CApr%2CMay%2CJun&values=12%2C19%2C14%2C26%2C31%2C28&width=900&height=520&color=%238595e8&background=%23fffdf8&grid=true&valuesOn=true" alt="Deploys per month" width="900" height="520" />cURL
curl "https://www.plotlark.com/api/chart?type=bar&title=Deploys+per+month&labels=Jan%2CFeb%2CMar%2CApr%2CMay%2CJun&values=12%2C19%2C14%2C26%2C31%2C28&width=900&height=520&color=%238595e8&background=%23fffdf8&grid=true&valuesOn=true" --output chart.svgNo account and no key needed for these requests. Swap /api/chart for / to reopen the same configuration in the studio.
Three steps, start to finish
- 1. Enter the data
- Type or paste up to twelve label-and-value pairs in the studio. The preview redraws as you edit, and anything the renderer would reject is flagged before you copy a URL.
- 2. Shape it
- Pick bar, line, area, or donut, set the accent and background colours, choose the pixel size, and toggle the grid and value labels.
- 3. Take the image
- Download the SVG or PNG, or copy the request URL so the image regenerates on demand instead of living in a downloads folder.
A file or a link
Both come from the same drawing. Which one you want depends on whether the numbers will change.
| Option | Best for | Trade-off |
|---|---|---|
| Downloaded file | Attachments and slides | Frozen at the moment you exported it |
| Request URL | Docs, wikis, and READMEs | The full configuration is visible in the link |
| Saved stable URL | Anything you will revise | Needs an account, and the link can be revoked |
The image is deterministic
- Same input, same output
- The renderer has no randomness and no layout drift, so a URL you shared last month draws exactly the chart it drew then.
- Bounded input
- Titles, labels, values, and dimensions are all validated before anything is drawn, so a broken configuration returns an explanatory 400 rather than a mangled picture.
What PlotLark does not do
These limits apply before you start, so nothing on this page promises more than the renderer delivers.
- One non-negative numeric series per chart, from 1 to 12 points.
- Bar, line, area, and donut. No stacked, dual-axis, or time-series grammar.
- 320–1600 px wide and 240–1200 px tall, on a solid six-digit hex background.
- Anonymous rendering is capped at 60 origin requests a minute per address.
Common questions
What image formats can I get?
SVG and PNG. Both come from the same rendering pass, so they show an identical chart.
Can I re-edit an image later?
Yes, if you keep the URL. The studio reads the same parameters as the render endpoint, so opening the link in the studio restores the exact configuration.