Change Detection

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Allgemein
Benachrichtigungen
Abrufen
Globale Filter
UI-Optionen
API
RSS
Backups
Uhrzeit und Datum
CAPTCHA & Proxys
AI / LLM
Info

Prüfintervall

Wochen
Tage
Stunden
Minuten
Sekunden

Standardmäßige Überprüfungszeit für alle Observationen, derzeitiges Systemminimum ist 86400 Sekunden (Weitere Informationen).

Möchten Sie einen Zeitplan verwenden? Bestätigen/speichern Sie zunächst Ihre Einstellungen für die Zeitzone.

Häufigkeit, mit der der Filter fehlen darf, bevor eine Benachrichtigung gesendet wird

Nach dieser Anzahl aufeinanderfolgender Male, dass der CSS/xPath-Filter fehlt, eine Benachrichtigung sendenHäufigkeit, mit der der Filter fehlen darf, bevor eine Benachrichtigung gesendet wird
Set to 0 to disable

Number of history items per watch to keep

Limit collection of history snapshots for each watch to this number of history items.
Set to empty to disable / no limit

Passwort

Password protection for your changedetection.io application.

Erlauben Sie anonymen Zugriff auf die Seite mit dem Wiedergabeverlauf, wenn das Passwort aktiviert ist

Zugriff auf die Änderungshistorie-Seite erlauben, wenn Passwort aktiviert ist (Gut zum Teilen der Diff-Seite)Erlauben Sie anonymen Zugriff auf die Seite mit dem Wiedergabeverlauf, wenn das Passwort aktiviert ist

Leere Seiten als Änderung behandeln?

When a request returns no content, or the HTML does not contain any text, is this considered a change?

Standard-Proxy

Direct
Bright Data datacenter
Bright Data residential
No proxy

Wählen Sie einen Standard-Proxy für alle Überwachungen

Liste der Benachrichtigungs-URLs

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

Erweiterte Hilfe und Tipps anzeigen

Testbenachrichtigung senden Benachrichtigungs-Debug-Protokolle

Benachrichtigungstitel

Titel für alle Benachrichtigungen

Benachrichtigungstext

Inhalt für alle Benachrichtigungen — Sie können verwenden Jinja2 templating in the notification title, body and URL, and tokens from below.

Tokens/Platzhalter anzeigen

Token	Beschreibung
`{{base_url}}`	The URL of the changedetection.io instance you are running.
`{{watch_url}}`	The URL being watched.
`{{watch_uuid}}`	Die UUID der Überwachung.
`{{watch_title}}`	The page title of the watch, uses <title> if not set, falls back to URL
`{{watch_tag}}`	Die Überwachungsgruppe / Tag
`{{preview_url}}`	The URL of the preview page generated by changedetection.io.
`{{change_datetime}}`	Date/time of the change, accepts format=, change_datetime(format='%A')', default is '%Y-%m-%d %H:%M:%S %Z'
`{{diff_url}}`	The URL of the diff output for the watch.
`{{diff_url}}`	The URL of the diff output for the watch.
`{{diff}}`	The diff output - only changes, additions, and removals All diff variants accept `lines=`, `context=`, `word_diff=`, `ignore_junk=` args, e.g. `{{diff(lines=10)}}`, `{{diff_added(lines=5, context=2)}}`
`{{diff_clean}}`	The diff output - only changes, additions, and removals — Without (added) prefix or colors
`{{diff_added}}`	The diff output - only changes and additions
`{{diff_added_clean}}`	The diff output - only changes and additions — Without (added) prefix or colors
`{{diff_removed}}`	The diff output - only changes and removals
`{{diff_removed_clean}}`	The diff output - only changes and removals — Without (added) prefix or colors
`{{diff_full}}`	The diff output - full difference output
`{{diff_full_clean}}`	The diff output - full difference output — Without (added) prefix or colors
`{{diff_patch}}`	The diff output - patch in unified format
`{{diff_changed_from}}`	Only the changed words/values from the previous version — e.g. the old price. Best when a single value changes per line; multiple changed fragments are joined by newline.
`{{diff_changed_to}}`	Only the changed words/values from the new version — e.g. the new price. Best when a single value changes per line; multiple changed fragments are joined by newline.
`{{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}}, und {{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. Mehr hier

For JSON payloads, use |tojson without quotes for automatic escaping, for example - { "name": {{ watch_title|tojson }} }
URL encoding, use |urlencode, zum Beispiel - gets://hook-website.com/test.php?title={{ watch_title|urlencode }}
Regular-expression replace, use |regex_replace, zum Beispiel - {{ "hello world 123" | regex_replace('[0-9]+', 'no-more-numbers') }}
For a complete reference of all Jinja2 built-in filters, users can refer to the https://jinja.palletsprojects.com/en/3.1.x/templates/#builtin-filters

Benachrichtigungsformat

Format für alle Benachrichtigungen

Discord does not render HTML — switch to Plain Text format to avoid   and other HTML entities appearing literally in your notifications.

Benachrichtigungs-Basis-URL überschreiben

Base URL used for the {{ base_url }} Token in Benachrichtigungslinks.
Default value is the system environment variable 'BASE_URL' - hier mehr lesen.

Fetch Methode

Basic fast Plaintext/HTTP Client
Playwright Chromium/Javascript via 'ws://browser-sockpuppet-chrome:3000'

Benutzen Sie die Basic Methode (Standard), bei der Ihre überwachten Websites kein Javascript zum Rendern benötigen.

Die Chrome/Javascript-Methode erfordert eine Netzwerkverbindung zu einem laufenden WebDriver+Chrome-Server, der durch die Umgebungsvariable „WEBDRIVER_URL“ festgelegt wird.

Wenn Sie Probleme damit haben, dass die Seite vollständig gerendert wird (fehlender Text usw.), versuchen Sie, die Wartezeit hier zu verlängern.
Dies wartet n Sekunden, bevor der Text extrahiert wird.

Warten Sie einige Sekunden, bevor Sie Text extrahieren.

Anzahl der Fetch Arbeiter

Number of concurrent workers to process watches. More workers = faster processing but higher memory usage.
Aktuell läuft: 4 betriebsbereit async Worker.

Zufällige Jitter-Sekunden ± überprüfen

Example - 3 seconds random jitter could trigger up to 3 seconds earlier or up to 3 seconds later

Anforderungs-Timeout in Sekunden

For regular plain requests (not chrome based), maximum number of seconds until timeout, 1-999.

Standardmäßige User-Agent Überschreibungen

Klartext-Anfragen
Chrome-Anfragen

Applied to all requests.

Note: Simply changing the User-Agent often does not defeat anti-robot technologies, it's important to consider all of the ways that the browser is detected.

Tipp: Connect using Bright Data proxies, find out more here.

Leerzeichen ignorieren

Ignore whitespace, tabs and new-lines/line-feeds when considering if a change was detected.
Hinweis: Changing this will change the status of your existing watches, possibly trigger alerts etc.

Rendern Sie den Inhalt des Ankertags

Render anchor tag content, default disabled, when enabled renders links as (link text)[https://somesite.com]
Hinweis: Changing this could affect the content of your existing watches, possibly trigger alerts etc.

Elemente entfernen

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 ignorieren

Note: This is applied globally in addition to the per-watch rules.

Matching text will be ignored in the text snapshot (you can still see it but it wont trigger a change)
Note: This is applied globally in addition to the per-watch rules.
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

Entfernen Sie ignorierte Zeilen

Remove any text that appears in the "Ignore text" from the output (otherwise its just ignored for change-detection)
Hinweis: Changing this will change the status of your existing watches, possibly trigger alerts etc.

API Access

Drive your changedetection.io via API, More about API-Zugriff und Beispiele hier.

Sicherheitsüberprüfung des API-Zugriffstokens aktiviert

Restrict API access limit by using x-api-key header - required for the Chrome Extension to work

API-Schlüssel 819e494fcccc506a30b018050ac85869

Regenerate API key

Chrome-Erweiterung

Easily add any web-page to your changedetection.io installation from within Chrome.

Step 1 Install the extension, Step 2 Navigate to this page, Step 3 Open the extension from the toolbar and click "Sync API Access"

Chrome Webstore

Ausgeblendete Beobachtungen aus RSS-Feed ausblenden

Anzahl der Änderungen, die im Beobachtungs-RSS-Feed angezeigt werden sollen

Maximum number of history snapshots to include in the watch specific RSS feed.

Aktivieren Sie den RSS-Reader-Modus

For watching other RSS feeds - When watching RSS/Atom feeds, convert them into clean text for better change detection.

RSS-Inhaltsformat

Does your reader support HTML? Set it here

RSS--Körper erstellt aus

'System default' for the same template for all items, or re-use your "Notification Body" as the template.

RSS-Vorlage „Systemstandard“ überschreiben

Inhalt für alle Benachrichtigungen — Sie können verwenden Jinja2 templating in the notification title, body and URL, and tokens from below.

Tokens/Platzhalter anzeigen

Token	Beschreibung
`{{base_url}}`	The URL of the changedetection.io instance you are running.
`{{watch_url}}`	The URL being watched.
`{{watch_uuid}}`	Die UUID der Überwachung.
`{{watch_title}}`	The page title of the watch, uses <title> if not set, falls back to URL
`{{watch_tag}}`	Die Überwachungsgruppe / Tag
`{{preview_url}}`	The URL of the preview page generated by changedetection.io.
`{{change_datetime}}`	Date/time of the change, accepts format=, change_datetime(format='%A')', default is '%Y-%m-%d %H:%M:%S %Z'
`{{diff_url}}`	The URL of the diff output for the watch.
`{{diff_url}}`	The URL of the diff output for the watch.
`{{diff}}`	The diff output - only changes, additions, and removals All diff variants accept `lines=`, `context=`, `word_diff=`, `ignore_junk=` args, e.g. `{{diff(lines=10)}}`, `{{diff_added(lines=5, context=2)}}`
`{{diff_clean}}`	The diff output - only changes, additions, and removals — Without (added) prefix or colors
`{{diff_added}}`	The diff output - only changes and additions
`{{diff_added_clean}}`	The diff output - only changes and additions — Without (added) prefix or colors
`{{diff_removed}}`	The diff output - only changes and removals
`{{diff_removed_clean}}`	The diff output - only changes and removals — Without (added) prefix or colors
`{{diff_full}}`	The diff output - full difference output
`{{diff_full_clean}}`	The diff output - full difference output — Without (added) prefix or colors
`{{diff_patch}}`	The diff output - patch in unified format
`{{diff_changed_from}}`	Only the changed words/values from the previous version — e.g. the old price. Best when a single value changes per line; multiple changed fragments are joined by newline.
`{{diff_changed_to}}`	Only the changed words/values from the new version — e.g. the new price. Best when a single value changes per line; multiple changed fragments are joined by newline.
`{{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

Ensure the settings below are correct, they are used to manage the time schedule for checking your web page watches.

UTC Time & Date from Server: 2026-04-27T21:50:36.034256+00:00

Local Time & Date in Browser:

Standardzeitzone für den Watch-Check-Planer

Öffnen Sie die Seite „Verlauf“ in einem neuen Tab

Enable this setting to open the diff page in a new tab. If disabled, the diff page will open in the current tab.

Echtzeit-UI-Updates aktiviert

Realtime UI Updates Enabled - (Restart required if this is changed)

Favicons Aktiviert

Enable or Disable Favicons next to the watch list

Verwenden Sie die Seite <Titel> in der Übersichtsliste der Beobachtungen

Pagergröße

Number of items per page in the watch overview list, 0 to disable.

BrightData offer world-class proxy services, "Data Center" proxies are a very affordable way to proxy your requests, whilst WebUnlocker can help solve most CAPTCHAs.

BrightData offer many many different types of proxies, it is worth reading about what is best for your use-case.

When you have registered, enabled the required services, visit the API example page, then select Python, set the country you wish to use, then copy+paste the access Proxy URL into the "Extra Proxies" boxes below.

The Proxy URL with BrightData should start with http://brd-customer...

When you sign up using https://brightdata.grsm.io/n0r16zf7eivq BrightData will match any first deposit up to $150

Collect public data at scale with industry-leading web scraping solutions and the world’s largest ethical proxy network.

Oxylabs also provide a WebUnlocker proxy that bypasses sophisticated anti-bot systems, so you don’t have to.

Serve over 195 countries, providing Residential, Mobile and ISP proxies and much more.

Use the promo code boost35 with this link https://oxylabs.go2cloud.org/SH2d for 35% off Residential, Mobile proxies, Web Unblocker, and Scraper APIs. Built-in proxies enable you to access data from all around the world and help overcome anti-bot solutions.

Tipp: "Residential" and "Mobile" proxy type can be more successful than "Data Center" for blocked websites.

Extra Proxies

Extra Proxies-0

Name
Proxy-URL

Extra Proxies-1

Name
Proxy-URL

Extra Proxies-2

Name
Proxy-URL

Extra Proxies-3

Name
Proxy-URL

Extra Proxies-4

Name
Proxy-URL

"Name" will be used for selecting the proxy in the Watch Edit settings
SOCKS5 proxies with authentication are only supported with 'plain requests' fetcher, for other fetchers you should whitelist the IP access instead

Extra Browsers can be attached to further defeat CAPTCHA's on websites that are particularly hard to scrape.
Simply paste the connection address into the box, More instructions and examples here

Extra Browsers

Extra Browsers-0

Name
Browser-Verbindungs-URL

Extra Browsers-1

Name
Browser-Verbindungs-URL

Extra Browsers-2

Name
Browser-Verbindungs-URL

Extra Browsers-3

Name
Browser-Verbindungs-URL

Extra Browsers-4

Name
Browser-Verbindungs-URL

✦ AI-powered change monitoring

Connect an LLM to move from "something changed" to "only the thing you care about changed".

⊞

Intent filtering

Each watch or tag can carry a plain-text intent — "notify me only when the price drops" or "alert when the item goes out of stock". On every detected change the AI evaluates the diff against it and suppresses irrelevant noise.

≡

AI Change Summary

Instead of raw diffs, receive plain-language summaries in notifications — "Price dropped from $89 to $67" or "3 new items added to the listing". Set a global default prompt here, or override per watch or tag.

≈

Minimal cost

The AI sees only a unified diff of what changed — never full page HTML. Low-cost models like gpt-4o-mini or Gemini Flash handle this well, typically fractions of a cent per check.

AI Provider

⚠

Third-party data transfer — please read

When AI features are active, change data from the websites you monitor — including page diffs and extracted text — is sent to an external AI provider of your choice.

You are solely responsible for ensuring this complies with the terms of service of each website you monitor.
You are solely responsible for compliance with applicable data-protection laws (e.g. GDPR) regarding any personal data that may appear in monitored content.
API costs charged by your chosen provider are your own responsibility; this software has no visibility into or control over those charges.
AI / LLM models are known to hallucinate — producing plausible-sounding but factually incorrect or entirely fabricated output with apparent confidence — and by design may omit or truncate relevant data during summarisation. AI output must never be relied upon as complete or accurate. This software is provided as-is with no warranty of any kind.
By enabling AI features you personally indemnify and hold harmless the creator(s) and contributor(s) of this software from any claims, damages, or liability arising from this data transfer or your use of AI features.

I have read and understood the above. I accept full responsibility and indemnify the creator(s) of this software.

Default AI Change Summary

Default AI Change Summary prompt

Used for all watches unless overridden by the watch or its tag/group. Modify default prompt

Behaviour

Configure a provider first to unlock behaviour settings.

Token & Cost Tracking

No AI usage recorded yet.

Token budget tokens per month (0 = unlimited)

Max input characters characters — currently enforcing: 100,000

Uptime: 3 hours, 59 minutes, 51 Sekunden

Python-Version: 3.11.15

Aktive Plugins:

wordcount_plugin - Word count plugin for content analysis.
levenshtein_plugin - Levenshtein distance and similarity plugin for text change detection.
llm_restock - LLM fallback plugin for price and restock info extraction.

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