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from $1.50 / 1,000 page checkeds

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Website Change Monitor — Hash & Text Diff (No Browser, No LLM)

Try for free

Monitor URL lists for content changes: SHA-256 hash, difflib text diff, optional CSS selector. Chain from sitemap / url-status. HTTP only — no browser, no LLM. Failed checks free. 256 MB.

Pricing

from $1.50 / 1,000 page checkeds

Rating

0.0

(0)

Developer

新世紀書僮

Actor stats

Bookmarked

Total users

Monthly active users

3 days ago

Last modified

Categories

SEO tools

Developer tools

Automation

URLs to monitor

urls

Optional

One or more URLs. Accepts {"url": "..."} objects (same shape as Sitemap / URL-status dataset rows). Plain strings and remote lists (requestsFromUrl) also work.

Type:array

Source dataset ID

datasetId

Optional

Optional. Apify dataset ID from Sitemap URL Discovery or URL Status Checker. Reads the url field from each item.

Type:string

Source key-value store ID

keyValueStoreId

Optional

Optional. Load URLs from a KV record such as DOC_TO_MARKDOWN_INPUT.

Type:string

Record key

keyValueRecordKey

Optional

Key inside the source key-value store. Ignored unless a store ID is set.

Type:string

Default:DOC_TO_MARKDOWN_INPUT

Snapshot store ID

snapshotStoreId

Optional

Optional. Existing Apify key-value store ID that holds previous hashes/text. Prefer this for stable cross-run state. If empty, Snapshot store name is used.

Type:string

Snapshot store name

snapshotStoreName

Optional

Named KV store used when Snapshot store ID is empty. Created if missing. Use one name per monitoring project.

Type:string

Default:website-change-snapshots

Store previous text

storePreviousText

Optional

Save normalized text in the snapshot so the next run can emit a unified diff. Turn off to store hashes only (cheaper storage; hash change still detected).

Type:boolean

Default:true

Max stored text chars

maxStoredTextChars

Optional

Cap for text kept in each snapshot (characters). Diffs use this stored text.

Type:integer

Minimum:0

Maximum:500000

Default:100000

CSS selector (main content)

cssSelector

Optional

Optional. Restrict hashing/diff to matching nodes (e.g. main, article, #content). Empty = whole body after stripping script/style.

Type:string

Ignore regex patterns

ignorePatterns

Optional

Regex patterns removed from text before hashing (timestamps, CSRF tokens, counters). Applied with MULTILINE.

Type:array

Default:

[]

Max URLs

maxUrls

Optional

Stop after checking this many unique URLs (0 = no limit).

Type:integer

Minimum:0

Maximum:100000

Default:500

Max body bytes

maxBodyBytes

Optional

Truncate each response body after this many bytes before extraction.

Type:integer

Minimum:10000

Maximum:10000000

Default:2000000

Dataset filter

outputFilter

Optional

Which rows to save. SUMMARY always covers every check. Successful checks are still charged when filtered out.

Type:string

Default:all

Options:

allchangedchanged_or_firsterrors

Max unified-diff lines

maxDiffLines

Optional

Cap lines in diffSummary.unifiedDiff.

Type:integer

Minimum:5

Maximum:200

Default:40

Charge failed checks

chargeFailedChecks

Optional

Default off: DNS/timeout/network failures are free. Turn on only if you want every attempted URL billed as page-checked.

Type:boolean

Default:false

Max concurrency

maxConcurrency

Optional

Parallel HTTP fetches.

Type:integer

Minimum:1

Maximum:20

Default:5

Request timeout (seconds)

requestTimeoutSecs

Optional

Timeout for each HTTP GET.

Type:integer

Minimum:5

Maximum:120

Default:30

User-Agent

userAgent

Optional

Optional custom User-Agent.

Type:string

Proxy

proxyConfiguration

Optional

Optional Apify Proxy if a site blocks data-center IPs.

Type:object

Default:

{
  "useApifyProxy": false
}

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