Change Detection - Edit - https://reddit.com/r/baseball

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General
Request
Browser Steps
Visual Filter Selector
Filters & Triggers
Notifications
Stats

URL

Some sites use JavaScript to create the content, for this you should use the Chrome/WebDriver Fetcher

Variables are supported in the URL (help and examples here).

Processor - What do you want to achieve?

Re-stock & Price detection for single product pages
Webpage Text/HTML, JSON and PDF changes

Title

Group tag

Organisational tag/group name used in the main listing page

Use global settings for time between check

Time Between Check

Weeks
Days
Hours
Minutes
Seconds

The interval/amount of time between each check.

Want to use a time schedule? First confirm/save your Time Zone Settings

Extract <title> from document and use as watch title

Send a notification when the filter can no longer be found on the page

Sends a notification when the filter can no longer be seen on the page, good for knowing when the page changed and your filter will not work anymore.

Fetch Method

Basic fast Plaintext/HTTP Client
WebDriver Chrome/Javascript
System settings default

Use the Basic method (default) where your watched site doesn't need Javascript to render.

The Chrome/Javascript method requires a network connection to a running WebDriver+Chrome server, set by the ENV var 'WEBDRIVER_URL'.

Tip: Connect using Bright Data and Oxylabs Proxies, find out more here.

Show advanced options

Sorry, this functionality only works with Playwright/Chrome enabled watches.
You need to Set the fetch method to Playwright/Chrome mode and resave and have the Playwright connection enabled.

Error - Playwright support for Chrome based fetching is not enabled. Alternatively try our very affordable subscription based service which has all this setup for you.

You may need to Enable playwright environment variable and uncomment the sockpuppetbrowser in the docker-compose.yml file.

(Also Selenium/WebDriver can not extract full page screenshots reliably so Playwright is recommended here)

Notifications Muted / Off

Use system defaults

Notification URL List

Tip: Use AppRise Notification URLs for notification to just about any service! Please read the notification services wiki here for important configuration notes.

Show advanced help and tips

Send test notification Notification debug logs

Notification Title

Title for all notifications

Notification Body

Body for all notifications ‐ You can use Jinja2 templating in the notification title, body and URL, and tokens from below.

Show token/placeholders

Token	Description
`{{base_url}}`	The URL of the changedetection.io instance you are running.
`{{watch_url}}`	The URL being watched.
`{{watch_uuid}}`	The UUID of the watch.
`{{watch_title}}`	The title of the watch.
`{{watch_tag}}`	The watch label / tag
`{{preview_url}}`	The URL of the preview page generated by changedetection.io.
`{{diff_url}}`	The URL of the diff output for the watch.
`{{diff}}`	The diff output - only changes, additions, and removals
`{{diff_added}}`	The diff output - only changes and additions
`{{diff_removed}}`	The diff output - only changes and removals
`{{diff_full}}`	The diff output - full difference output
`{{diff_patch}}`	The diff output - patch in unified format
`{{current_snapshot}}`	The current snapshot text contents value, useful when combined with JSON or CSS filters
`{{triggered_text}}`	Text that tripped the trigger from filters

Warning: Contents of {{diff}}, {{diff_removed}}, and {{diff_added}} depend on how the difference algorithm perceives the change.
For example, an addition or removal could be perceived as a change in some cases. More Here

For JSON payloads, use |tojson without quotes for automatic escaping, for example - { "name": {{ watch_title|tojson }} }

URL encoding, use |urlencode, for example - gets://hook-website.com/test.php?title={{ watch_title|urlencode }}

Notification format

Format for all notifications

Activate preview

Pro-tips:

Use the preview page to see your filters and triggers highlighted.
Some sites use JavaScript to create the content, for this you should use the Chrome/WebDriver Fetcher

CSS/JSONPath/JQ/XPath Filters

One CSS, xPath, JSON Path/JQ selector per line, any rules that matches will be used.
Show advanced help and tips

Remove elements

Remove HTML element(s) by CSS and XPath selectors before text conversion.
Don't paste HTML here, use only CSS and XPath selectors
Add multiple elements, CSS or XPath selectors per line to ignore multiple parts of the HTML.

Text filtering

Limit trigger/ignore/block/extract to;

Added lines

Replaced/changed lines

Removed lines

Note: Depending on the length and similarity of the text on each line, the algorithm may consider an addition instead of replacement for example.
So it's always better to select Added+Replaced when you're interested in new content.
When content is merely moved in a list, it will also trigger an addition, consider enabling Only trigger when unique lines appear

Only trigger when unique lines appear in all history

Good for websites that just move the content around, and you want to know when NEW content is added, compares new lines against all history for this watch.

Remove duplicate lines of text

Sort text alphabetically

Helps reduce changes detected caused by sites shuffling lines around, combine with check unique lines below.

Trim whitespace before and after text

Remove any whitespace before and after each line of text

Trigger/wait for text

Text to wait for before triggering a change/notification, all text and regex are tested case-insensitive.
Trigger text is processed from the result-text that comes out of any CSS/JSON Filters for this watch
Each line is processed separately (think of each line as "OR")
Note: Wrap in forward slash / to use regex example: /foo\d/

Ignore lines containing

Matching text will be ignored in the text snapshot (you can still see it but it wont trigger a change)
Each line processed separately, any line matching will be ignored (removed before creating the checksum)
Regular Expression support, wrap the entire line in forward slash /regex/
Changing this will affect the comparison checksum which may trigger an alert

Block change-detection while text matches

Block change-detection while this text is on the page, all text and regex are tested case-insensitive, good for waiting for when a product is available again
Block text is processed from the result-text that comes out of any CSS/JSON Filters for this watch
All lines here must not exist (think of each line as "OR")
Note: Wrap in forward slash / to use regex example: /foo\d/

Extract text

Extracts text in the final output (line by line) after other filters using regular expressions or string match;
- Regular expression ‐ example /reports.+?2022/i
- Don't forget to consider the white-space at the start of a line /.+?reports.+?2022/i
- Use //(?aiLmsux)) type flags (more information here)
- Keyword example ‐ example Out of stock
- Use groups to extract just that text ‐ example /reports.+?(\d+)/i returns a list of years only
- Example - match lines containing a keyword /.*icecream.*/
One line per regular-expression/string match

Sorry, this functionality only works with Playwright/Chrome enabled watches.
You need to Set the fetch method to Playwright/Chrome mode and resave and have the Playwright connection enabled.

Error - Playwright support for Chrome based fetching is not enabled. Alternatively try our very affordable subscription based service which has all this setup for you.

You may need to Enable playwright environment variable and uncomment the sockpuppetbrowser in the docker-compose.yml file.

(Also Selenium/WebDriver can not extract full page screenshots reliably so Playwright is recommended here)

Check count	0
Consecutive filter failures	0
History length	0
Last fetch duration	0.0s
Notification alert count	0
Server type reply	None

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