Terms of use

Last updated 13 November 2026

These are the terms for using Chart to Data. By using the site you agree to them. If you do not, please do not use it.

What the service does

You give it a chart, as a PDF or a picture, and it gives you the numbers it reads from the chart, drawn back on the chart so you can check them, and as a spreadsheet.

Check the numbers

• The numbers can be wrong. A picture is read by an AI model, which makes mistakes. A PDF’s drawing can be read incompletely.
• The marks the site draws on your chart, and the values it flags, are there to help you check. They are not a guarantee.
• You are responsible for checking the numbers before you rely on them, publish them, or make a decision with them.

Your files

• Upload only files you have the right to use this way.
• Your files and the numbers read from them stay yours. We claim no rights in them.
• What happens to a file after you upload it is set out on the privacy page.

Fair use

• The free allowance is for people, not for programs. Do not send uploads automatically or in bulk.
• Do not try to break the site, get around its limits, or use it to harm anyone.
• We may change the limits, or stop serving someone who misuses the site.

Packs of picture reads, and the Review pass

• A pack is a number of picture reads, paid for once. It is not a subscription and it does not run out with time.
• One read is used each time a picture you send is read by the AI model and a chart comes back. A read that fails and returns nothing is not counted. Charts read from a PDF’s drawing are free and use nothing.
• A paid read buys the reading, not a guarantee that it is right: see “Check the numbers” above.
• You get a code, not an account. Whoever has the code can use it, so keep it as you would keep cash. It is on your receipt if you lose it.
• Refunds: if you have used none of a pack, write to support@charttodata.com within 14 days of buying it and we will refund it and cancel the code. If something went wrong on our side, write to us whenever it happened.
• A Review pass is paid once, lasts 30 days from payment and does not renew. While it lasts, several files can go into one workbook. Its picture reads end with it. Refunds as for packs: unused, within 14 days.
• Prices are in US dollars. Any tax your country adds is shown on the payment page.

No promises

The site is offered as it is. We may change it, limit it or take it down at any time. To the extent the law allows, we give no warranty that it will be available, free of errors, or fit for a particular purpose, and we are not liable for loss that comes from using it or from relying on its numbers. Nothing here limits rights the law does not let us limit.

The law that applies

These terms are governed by the law of the Province of Ontario, Canada, and the federal law of Canada that applies there. The courts of Ontario decide disputes about them.

Changes and contact

If these terms change, the date at the top changes with them. Questions: support@charttodata.com.