Pricing

from $3.00 / 1,000 page checkeds

Web Page Change Monitor

Monitor pages for content changes with visual diff output. Compare against stored snapshots. CSS selectors for specific sections. Track prices, competitors, compliance. Multi-URL with configurable schedules.

Pricing

from $3.00 / 1,000 page checkeds

Rating

0.0

(0)

Developer

junipr

Actor stats

Bookmarked

Total users

Monthly active users

16 hours ago

Last modified

Categories

Automation

Developer tools

Pages to Monitor

pages

Optional

List of pages to monitor. Each entry defines a URL and what to watch. Defaults to Hacker News as a demo.

Type:object[]

Default:

[
  {
    "url": "https://news.ycombinator.com",
    "label": "hackernews"
  }
]

Max Pages Per Run

maxPagesPerRun

Optional

Maximum number of pages to check in a single run.

Type:integer

Minimum:1

Maximum:10000

Default:100

Render JavaScript

renderJs

Optional

Use Playwright browser for JavaScript-rendered pages (SPAs, dynamic content). Default false uses faster Cheerio for static HTML.

Type:boolean

Default:false

Wait For Network Idle

waitForNetworkIdle

Optional

Wait until network requests finish before extracting content (Playwright only). Useful for lazy-loaded content.

Type:boolean

Default:false

Change Threshold

changeThreshold

Optional

Minimum fraction of content that must change to trigger a detection. 0 = any change. 0.01 = 1% change. Range: 0–1.

Type:number

Minimum:0

Maximum:1

Default:0.01

Ignore Whitespace Changes

ignoreWhitespace

Optional

Treat whitespace-only differences as no change. Recommended to reduce false positives.

Type:boolean

Default:true

Ignore Case Changes

ignoreCaseChanges

Optional

Treat changes that differ only in capitalization as no change.

Type:boolean

Default:false

Ignore Numeric Changes

ignoreNumbers

Optional

Ignore changes to numeric values. Useful for filtering timestamps, view counters, and live scores.

Type:boolean

Default:false

Ignore Patterns (Regex)

ignorePatterns

Optional

Regular expression patterns for text to ignore. E.g., "\d{4}-\d{2}-\d{2}" ignores ISO dates.

Type:string[]

Default:

[]

Content Type

contentType

Optional

What content to compare: text (extracted text), html (raw HTML markup), or attributes (element attributes only).

Type:string

Default:text

Options:

texthtmlattributes

Diff Format

diffFormat

Optional

Output format for the diff: unified (git-style), sideBySide (left/right comparison), or json (structured changes array).

Type:string

Default:unified

Options:

unifiedsideBySidejson

Diff Context Lines

diffContextLines

Optional

Number of unchanged lines shown around each change in the diff.

Type:integer

Minimum:0

Maximum:20

Default:3

Include Full Snapshot Text

includeFullSnapshot

Optional

Include the complete current page text in the output. Disabled by default to keep dataset items small.

Type:boolean

Default:false

Webhook URL

webhookUrl

Optional

URL to POST change notifications to. Receives a JSON payload listing all changed pages. Leave empty to disable.

Type:string

Default:

Webhook Headers

webhookHeaders

Optional

Custom headers for webhook requests. Use for authentication tokens (e.g., {"Authorization": "Bearer TOKEN"}).

Type:object

Default:

{}

Notification Email

notificationEmail

Optional

Email address to send change notifications to. Leave empty to disable email notifications.

Type:string

Default:

Notify On No Change (Heartbeat)

notifyOnNoChange

Optional

Send a notification even when no changes are detected. Useful as a heartbeat to confirm the monitor is running.

Type:boolean

Default:false

Notify On Error

notifyOnError

Optional

Send a notification when a page fails to load.

Type:boolean

Default:true

Snapshot Store Name

snapshotStore

Optional

Name of the Key-Value Store to persist snapshots across runs. Use the same name every run to compare against previous state.

Type:string

Default:change-monitor-snapshots

Max Snapshot History

maxSnapshotHistory

Optional

Maximum number of historical snapshots to keep per page. Oldest are evicted first.

Type:integer

Minimum:1

Maximum:100

Default:10

Max Retries

maxRetries

Optional

Number of times to retry a failed page request before marking it as an error.

Type:integer

Minimum:0

Maximum:10

Default:3

Request Timeout (ms)

requestTimeout

Optional

Timeout per page request in milliseconds.

Type:integer

Minimum:5000

Maximum:120000

Default:30000

Max Concurrency

maxConcurrency

Optional

Maximum number of pages to check simultaneously. Higher values are faster but use more memory.

Type:integer

Minimum:1

Maximum:50

Default:10

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