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Darmowy szablon automatyzacji

Wykrywanie zmian na stronach internetowych i alerty z pakietem Google Suite i śledzeniem skrótów

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Monitorowanie zmian na stronach internetowych

Ten szablon n8n pozwala monitorować i wykrywać zmiany w zawartości stron internetowych, wysyłając powiadomienie tylko w przypadku wykrycia modyfikacji. Idealne rozwiązanie do śledzenia publicznie dostępnych dokumentów takich jak regulaminy firm, polityki rządowe czy strony konkurencji.

Jak to działa

  • Harmonogramowany trigger uruchamia proces codziennie
  • Zawartość strony jest pobierana za pomocą węzła HTTP request
  • Wybrane fragmenty treści są ekstrahowane przy użyciu węzła HTML
  • Węzeł kryptograficzny generuje hash z zawartości do porównania
  • Węzeł "remove duplicates" porównuje hash z poprzednimi wersjami
  • W przypadku wykrycia zmian, nowa wersja jest zapisywana w Google Drive i logowana w arkuszu Google Sheets
  • Opcjonalnie można wysłać powiadomienie e-mailowe przez Gmail

Przykłady zastosowań

Ta automatyzacja znajduje zastosowanie w wielu scenariuszach biznesowych i administracyjnych. Oto najpopularniejsze przypadki użycia:

  • Śledzenie zmian w regulaminach i warunkach korzystania z usług (TOS) dostawców
  • Monitorowanie aktualizacji polityk rządowych i przepisów prawnych
  • Obserwacja zmian cenowych i ofert na stronach konkurencji
  • Kontrola aktualizacji dokumentów technicznych i specyfikacji produktów
  • Śledzenie zmian w bazach wiedzy i dokumentacji API
  • Monitorowanie aktualizacji na stronach informacyjnych i komunikatów prasowych
  • Obserwacja zmian w ogłoszeniach o pracę i wymaganiach rekrutacyjnych

Jak używać

  • Zaktualizuj URL do monitorowania w węźle "variables"
  • Dostosuj selektory w węźle HTML do wyodrębniania odpowiednich fragmentów treści
  • Upewnij się, że strefa czasowa w Scheduled Trigger jest poprawnie ustawiona

Wymagania

  • Konta Google Sheets, Drive i Gmail do przechowywania danych i powiadomień
  • Strony internetowe powinny być publicznie dostępne
  • W przypadku stron chronionych może być konieczne użycie usługi webscrapingowej

Dostosowywanie workflow

  • Możliwość zastąpienia usług Google alternatywami takimi jak Microsoft365
  • Obsługa wielu URLi poprzez modyfikację węzła variables (wymaga dostosowania węzła HTML)
  • Możliwość rozszerzenia o dodatkowe kanały powiadomień (Slack, Teams, SMS)

   Skopiuj kod szablonu   
{"meta":{"instanceId":"408f9fb9940c3cb18ffdef0e0150fe342d6e655c3a9fac21f0f644e8bedabcd9","templateCredsSetupCompleted":true},"nodes":[{"id":"1083afcb-1257-45a3-b331-d93fb8769548","name":"Schedule Trigger","type":"n8n-nodes-base.scheduleTrigger","position":[-840,0],"parameters":{"rule":{"interval":[{}]}},"typeVersion":1.2},{"id":"c3ec0759-a3d1-4866-978a-bfe4f49ee81d","name":"Get Hash of Contents","type":"n8n-nodes-base.crypto","position":[380,0],"parameters":{"value":"={{ $json.data }}","dataPropertyName":"hash"},"typeVersion":1},{"id":"4ad92ad3-6f99-43a5-9a61-374adb3b28f7","name":"Notify of Change","type":"n8n-nodes-base.gmail","position":[1220,0],"webhookId":"cc4cbee1-ad57-48fb-810a-b21880357ab0","parameters":{"sendTo":"jim@example.com","message":"=site: {{ $('Variables').first().json.url }}ndate: {{ $now.toISO() }}nhash: {{ $json.hash }}ncontents: {{ $json.gdrive }}","options":{},"subject":"=Change detected for {{ $('Variables').first().json.url }}","emailType":"text"},"credentials":{"gmailOAuth2":{"id":"Sf5Gfl9NiFTNXFWb","name":"Gmail account"}},"typeVersion":2.1},{"id":"9385242a-86b1-4624-ada9-949851b68054","name":"Markdown","type":"n8n-nodes-base.markdown","position":[200,0],"parameters":{"html":"={{ $json.content.trim() }}","options":{}},"typeVersion":1},{"id":"663b6ba2-cbf9-44ea-a062-f88ccb0640c1","name":"Variables","type":"n8n-nodes-base.set","position":[-460,0],"parameters":{"options":{},"assignments":{"assignments":[{"id":"fa706ed3-7425-4f0e-9590-d9478b4e6692","name":"url","type":"string","value":"https://x.com/en/tos"}]}},"typeVersion":3.4},{"id":"2ef69fff-4d7a-439a-b317-ea5fa3ce7869","name":"Only New Hashes","type":"n8n-nodes-base.removeDuplicates","position":[560,0],"parameters":{"options":{"historySize":1},"operation":"removeItemsSeenInPreviousExecutions","dedupeValue":"={{ $json.hash }}"},"typeVersion":2},{"id":"93e13d80-a26f-408f-be4e-b582ab9fd9bd","name":"Log Record","type":"n8n-nodes-base.googleSheets","position":[1040,0],"parameters":{"columns":{"value":{"hash":"={{ $('Get Hash of Contents').first().json.hash }}","gdrive":"=https://drive.google.com/file/d/{{ $json.id }}/view?usp=sharing","website":"={{ $('Variables').first().json.url }}","date of change":"={{ $now.toISO() }}"},"schema":[{"id":"website","type":"string","display":true,"required":false,"displayName":"website","defaultMatch":false,"canBeUsedToMatch":true},{"id":"hash","type":"string","display":true,"required":false,"displayName":"hash","defaultMatch":false,"canBeUsedToMatch":true},{"id":"date of change","type":"string","display":true,"required":false,"displayName":"date of change","defaultMatch":false,"canBeUsedToMatch":true},{"id":"gdrive","type":"string","display":true,"removed":false,"required":false,"displayName":"gdrive","defaultMatch":false,"canBeUsedToMatch":true}],"mappingMode":"defineBelow","matchingColumns":[],"attemptToConvertTypes":false,"convertFieldsToString":false},"options":{},"operation":"append","sheetName":{"__rl":true,"mode":"list","value":"gid=0","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1K13OBMicH-ebhvJRYo4sHiOuHd1KIX2jiFxBLWy2UOk/edit#gid=0","cachedResultName":"Sheet1"},"documentId":{"__rl":true,"mode":"list","value":"1K13OBMicH-ebhvJRYo4sHiOuHd1KIX2jiFxBLWy2UOk","cachedResultUrl":"https://docs.google.com/spreadsheets/d/1K13OBMicH-ebhvJRYo4sHiOuHd1KIX2jiFxBLWy2UOk/edit?usp=drivesdk","cachedResultName":"86. Webpage Changes Tracker"}},"credentials":{"googleSheetsOAuth2Api":{"id":"XHvC7jIRR8A2TlUl","name":"Google Sheets account"}},"typeVersion":4.5},{"id":"dea15963-61de-4371-b716-7683e0e703a9","name":"Sticky Note","type":"n8n-nodes-base.stickyNote","position":[-540,-160],"parameters":{"color":7,"width":620,"height":380,"content":"## 1. Fetch a Webpage Contentsn[Read more about the HTTP request node](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.httprequest)"},"typeVersion":1},{"id":"bcb1c0b1-fc77-4417-a9c0-6299ce8ca33e","name":"Sticky Note1","type":"n8n-nodes-base.stickyNote","position":[100,-160],"parameters":{"color":7,"width":640,"height":400,"content":"## 2. Use Hashing to Detect Changesn[Learn more about the cryptography node](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.crypto/)"},"typeVersion":1},{"id":"eda51de6-80a2-42b1-83ba-66c551911c45","name":"Fetch Webpage","type":"n8n-nodes-base.httpRequest","position":[-280,0],"parameters":{"url":"={{ $json.url }}","options":{},"sendHeaders":true,"headerParameters":{"parameters":[{"name":"User-Agent","value":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36"}]}},"typeVersion":4.2},{"id":"8aa998f1-1558-4b54-a95a-7be9360a819a","name":"Extract Contents","type":"n8n-nodes-base.html","position":[-100,0],"parameters":{"options":{},"operation":"extractHtmlContent","extractionValues":{"values":[{"key":"content","cssSelector":".ct07","returnValue":"html"}]}},"typeVersion":1.2},{"id":"ecb60054-563c-4c0b-949c-abdcd3896f6b","name":"Sticky Note2","type":"n8n-nodes-base.stickyNote","position":[760,-160],"parameters":{"color":7,"width":660,"height":400,"content":"## 3. Notify when Changes Occurn[Read more about the Gmail node](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.gmail)n"},"typeVersion":1},{"id":"30774606-5e63-4d73-9894-ba14d5b1fc46","name":"Take a Snapshot","type":"n8n-nodes-base.googleDrive","position":[860,0],"parameters":{"name":"={{n$('Variables').item.json.urln .extractDomain()n .replace('.','_')n + $json.hashn + '.md'n}}","content":"={{ $json.data }}","driveId":{"__rl":true,"mode":"list","value":"My Drive"},"options":{},"folderId":{"__rl":true,"mode":"list","value":"1BbP5HRnjNkCvcDRFFg1bm0sNYBGZM6AU","cachedResultUrl":"https://drive.google.com/drive/folders/1BbP5HRnjNkCvcDRFFg1bm0sNYBGZM6AU","cachedResultName":"86. Monitor Webpage Changes"},"operation":"createFromText"},"credentials":{"googleDriveOAuth2Api":{"id":"yOwz41gMQclOadgu","name":"Google Drive account"}},"typeVersion":3},{"id":"9ae563ea-49a3-4dcc-9190-8746650018aa","name":"Sticky Note3","type":"n8n-nodes-base.stickyNote","position":[-1040,-760],"parameters":{"width":440,"height":980,"content":"## Try it outn### This n8n template can monitor and detect changes to a webpage's contents and notify you only when a change occurs.nnGreat to keep an eye on and track publicly available documents such as company TOS, government policy or competitor pages.nn### How it worksn* A scheduled trigger is used so we can run everyday to automate this process.n* A website page is then fetched with the HTTP request node and the contents we want to track are extracted using the HTML node.n* To detect changes, we generate a hash on the contents with the cryptography node and compare it with previously seen hashes using the "remove duplicates" node. If the hash was seen before, the workflow stops here.n* Finally, when new changes are detected a copy of the contents are uploaded to Google Drive and a logged into a Google sheet. A notification email can also be sent if action is required.nn### How to usen* Update the URL you want to track in the node named "variables" and ensure the HTML node has updated selectors to get the content you want.n* Ensure the timezone is set correctly when using the Scheduled Trigger node.nn### Need Help?nJoin the [Discord](https://discord.com/invite/XPKeKXeB7d) or ask in the [Forum](https://community.n8n.io/)!"},"typeVersion":1}],"pinData":{},"connections":{"Markdown":{"main":[[{"node":"Get Hash of Contents","type":"main","index":0}]]},"Variables":{"main":[[{"node":"Fetch Webpage","type":"main","index":0}]]},"Log Record":{"main":[[{"node":"Notify of Change","type":"main","index":0}]]},"Fetch Webpage":{"main":[[{"node":"Extract Contents","type":"main","index":0}]]},"Only New Hashes":{"main":[[{"node":"Take a Snapshot","type":"main","index":0}]]},"Take a Snapshot":{"main":[[{"node":"Log Record","type":"main","index":0}]]},"Extract Contents":{"main":[[{"node":"Markdown","type":"main","index":0}]]},"Schedule Trigger":{"main":[[{"node":"Variables","type":"main","index":0}]]},"Get Hash of Contents":{"main":[[{"node":"Only New Hashes","type":"main","index":0}]]}}}
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