Chart to Data
Claude connectorCommunityGet the numbers behind the charts in a paper. Reads every chart drawn in a PDF exactly, from the drawing itself: axes, series, points and e…
Chart to Data is a plot digitizer: it turns a chart back into the data behind it.
Give Claude the web address of a paper or a report as a PDF and ask for the numbers. Every chart drawn inside the PDF comes back as data: both axes with their labels and ranges, each series by name, and every point with its error bars. The values are read from the drawing inside the PDF, not estimated from pixels, so they are exact, and no AI model is involved in reading them.
It reads bar charts, line charts, scatter plots, pie charts and Kaplan-Meier survival curves with their number-at-risk tables, including log axes, date axes and charts with two y axes. A paper with many figures comes back in one go, or you can name the pages you want.
Each chart says how it was read, so Claude can tell you how far to trust it: exact when tick marks or gridlines pin the axes, close when the axes had to be placed from their labels alone.
The connector only reads. There is no account and no sign-in, and it is free. A chart that a PDF holds only as a picture, or a scan, is not found by the connector; those can be read at charttodata.com.
Chart to Data is #7,715 of 11,065 Claude connectors by popularity.
- Tools
- 1
exposed by this connector
Movement
From our daily snapshots over the last 30 days.
Rank by popularity
Not enough data points to chart.
Rank by trending score
Popularity score
Not enough data points to chart.
Trending score
In its categories
How this connector compares with others in the same category. Positions are counted within the category, not across the whole directory.
Data analytics3,006th of 3,994 by popularity · not ranked by trending score
| # | Connector | Popularity | Trending | 7d |
|---|---|---|---|---|
| 3004 | 3,000 | — | 840places down | |
| 3005 |  C8 Allocator Agent | 3,000 | — | 1,026places down |
| 3006 | Chart to DataThis page | 3,000 | — | — |
| 3007 | 3,000 | — | — | |
| 3008 | 3,000 | — | 353places down |
This connector isn’t ranked by trending score, so the category’s top connectors are shown instead.
| # | Connector | Trending | Popularity | 7d |
|---|---|---|---|---|
| 1 |  Hevy | 4,611,167 | 11,443 #301 | 2places down |
| 2 | 4,214,705 | 9,604 #577 | — | |
| 3 |  Adspirer Retail Media Ads | 684,184 | 10,578 #414 | 2places down |
| 4 | 632,495 | 9,778 #546 | 6places up | |
| 5 | 531,611 | 15,746 #38 | 66places up |
Tools
- read_charts_in_pdf
- Made by
- Chart to Data · Website
- Sign-in
- Not required
- Connector URL
- https://charttodata.com/mcp
- Transport
- Streamable HTTP
- Works with
- Claude, Claude API, Claude Code, Claude Desktop
- Added
- November 13, 2026
- More info
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