> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spreader.sh/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Spreader is a web service that tracks arbitrage spreads between crypto exchanges. This documentation covers only what a user of the service sees and does.
> Page paths starting with /en/ are English. Translations live under /ru/ and /uk/ with the same file names.
> Screenshots are illustrations. Every screenshot is accompanied by text that states the same facts, so you do not need to see the image.

# Scanner pages

> A scanner page keeps its own filters, columns, sort, view and hidden pairs. Create pages for different strategies, save them, and switch in the sidebar.

Every scanner page is a saved set of filters, columns, sort, view and hidden pairs. Pages are listed under **Scanners** in the sidebar with their live row count. **Main** is always first and cannot be renamed or deleted, but its filters can be changed freely.

## Saving changes

The top bar shows `All saved` or `Unsaved changes`. Changes to filters, columns, sort or view are kept in your browser until you decide:

* **Save** writes them to the page.
* **Reset** discards them and returns to the saved state.
* **Reset to defaults** clears everything: no filters, all kinds, sort by spread, default columns and row height.

## Creating a page

![New page dialog with Name field, Start from options and the switch Open the new page after saving](https://mintcdn.com/develops-6bdfff15/0-2fZCEZBOlAqgr4/images/scanner/new-page-en-dark.png?fit=max\&auto=format\&n=0-2fZCEZBOlAqgr4\&q=85\&s=cd552ccacee5fde8159ab9c49705fc34)

The New page dialog.

1. Click **+** next to **Scanners** in the sidebar.
2. Enter a name.
3. Choose **Start from**: the current filters including unsaved changes, or no filters.
4. Leave **Open the new page after saving** on to switch to it at once.
5. Click **Create page**.

Guests keep up to 2 pages, signed in users up to 10, Main included. When the limit is reached, the dialog says so. Delete a page to add a new one.

## Page menu

![Page menu with Duplicate and Delete items](https://mintcdn.com/develops-6bdfff15/0-2fZCEZBOlAqgr4/images/scanner/page-menu-en-dark.png?fit=max\&auto=format\&n=0-2fZCEZBOlAqgr4\&q=85\&s=4d42acc5d59cbb14843ae8096912bed4)

The page menu in the sidebar.

Hover a page in the sidebar and click **⋯** to rename, duplicate, move up or down, or delete it. Deleting removes the page with its filters, columns and hidden pairs, and also the alerts that follow it. This cannot be undone.

## Hidden pairs

![Hidden pairs panel with a search box, three hidden pairs and an Unhide all button](https://mintcdn.com/develops-6bdfff15/0-2fZCEZBOlAqgr4/images/scanner/hidden-en-dark.png?fit=max\&auto=format\&n=0-2fZCEZBOlAqgr4\&q=85\&s=22620bf65a156d9d21e9e50865034491)

Hidden pairs of this page.

Hover a row and click the **hide** icon to remove that pair from this page. Hidden pairs are listed under the **Hidden** button in the toolbar, which appears when the page hides at least one pair. Hiding is per page and the pair stays in the list even when it leaves the market or no longer passes the filters. **Show hidden pairs in the table** brings them back temporarily, the cross next to a pair unhides it, **Unhide all** clears the list. Hidden pairs and favorites share one limit: 50 for guests, 5 000 for signed in users.

## Alerts from a page

The **Alert** button at the top right creates an alert rule. **Copy the current filters** makes a rule with a snapshot of these filters. **Follow this page** makes a rule that tracks the saved filters of the page, so editing and saving the page updates the alert. The Alerts section of this documentation describes rules and channels.


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