# Tables, checklists and link cards

Small structured blocks for a canvas: a table of plain text, a checklist to tick through, and a link
card that shows a web page's title, summary and image. Lists and references sit next to the thinking
they belong to.

## What you can do

- Table: a grid of plain text cells, with a header row. Add and remove rows and columns.
- Checklist: items to tick, untick, rename and remove.
- Link card: a URL shown with its page title, description, image and site name.
- Link to a page in siftware.dev itself: the card shows the record's title.

## How to

Table:
1. Open Add a shape or block, choose Table.
2. Click a cell and type. Enter saves, Esc reverts.
3. Use Add row, Add column, Remove last row and Remove last column on the table.

Checklist:
1. Open Add a shape or block, choose Checklist.
2. Type in Add item and press Enter.
3. Tick or untick an item with its box. Remove it with its remove button.

Link card:
1. Press Add a link in the toolbar, paste the address (`http://` or `https://`), press Enter.
2. Or press Mod+V on the canvas with a web address on the clipboard.
3. The card shows Fetching preview, then the page's details, or the site name and "no preview" if the
   page gave none.

## Limits

- Tables: up to 50 rows and 10 columns, 500 characters a cell. Plain text only.
- Checklists: up to 100 items, 500 characters an item.
- Tables and checklists do not become tasks.
- Link cards take http and https addresses only, up to 2048 characters, with no user name or password
  in them.
- A link card's image is a stored copy, so viewing the canvas does not contact the site.
- A link to siftware.dev itself is never fetched: its title is read once, when the card is made, and
  does not follow later renames.

## Related

- [Canvas](/docs/manual/canvas/canvas.md)
- [Shapes, frames and lines](/docs/manual/canvas/shapes-frames-and-lines.md)