changedetection.io/README.md

#  changedetection.io
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## Self-hosted open source change monitoring of web pages.

_Know when web pages change! Stay ontop of new information!_ 

Live your data-life *pro-actively* instead of *re-actively*, do not rely on manipulative social media for consuming important information.


<img src="https://raw.githubusercontent.com/dgtlmoon/changedetection.io/master/screenshot.png" style="max-width:100%;" alt="Self-hosted web page change monitoring"  title="Self-hosted web page change monitoring"  />

#### Example use cases

Know when ...

- Government department updates (changes are often only on their websites)
- Local government news (changes are often only on their websites)
- New software releases, security advisories when you're not on their mailing list.
- Festivals with changes
- Realestate listing changes
- COVID related news from government websites
- Detect and monitor changes in JSON API responses 
- API monitoring and alerting

_Need an actual Chrome runner with Javascript support? see the experimental <a href="https://github.com/dgtlmoon/changedetection.io/tree/javascript-browser">Javascript/Chrome support changedetection.io branch!</a>_

**Get monitoring now! super simple, one command!**

Run the python code on your own machine by cloning this repository, or with <a href="https://docs.docker.com/get-docker/">docker</a> and/or <a href="https://www.digitalocean.com/community/tutorial_collections/how-to-install-docker-compose">docker-compose</a>

With one docker-compose command

```bash
docker-compose up -d
```

Then visit http://127.0.0.1:5000 , You should now be able to access the UI.

_Now with per-site configurable support for using a fast built in HTTP fetcher or use a Chrome based fetcher for monitoring of JavaScript websites!_


#### Updating to the latest version

Highly recommended :)

```bash
docker pull dgtlmoon/changedetection.io
docker-compose up -d
```
  
### Screenshots

Examining differences in content.

<img src="https://raw.githubusercontent.com/dgtlmoon/changedetection.io/master/screenshot-diff.png" style="max-width:100%;" alt="Self-hosted web page change monitoring context difference "  title="Self-hosted web page change monitoring context difference " />

Please :star: star :star: this project and help it grow! https://github.com/dgtlmoon/changedetection.io/

### Notifications

ChangeDetection.io supports a massive amount of notifications (including email, office365, custom APIs, etc) when a web-page has a change detected thanks to the <a href="https://github.com/caronc/apprise">apprise</a> library.
Simply set one or more notification URL's in the _[edit]_ tab of that watch.

Just some examples

    discord://webhook_id/webhook_token
    flock://app_token/g:channel_id
    gitter://token/room
    gchat://workspace/key/token
    msteams://TokenA/TokenB/TokenC/
    o365://TenantID:AccountEmail/ClientID/ClientSecret/TargetEmail
    rocket://user:password@hostname/#Channel
    mailto://user:pass@example.com?to=receivingAddress@example.com
    json://someserver.com/custom-api
    syslog://
 
<a href="https://github.com/caronc/apprise">And everything else in this list!</a>

<img src="https://raw.githubusercontent.com/dgtlmoon/changedetection.io/master/screenshot-notifications.png" style="max-width:100%;" alt="Self-hosted web page change monitoring notifications"  title="Self-hosted web page change monitoring notifications"  />

Now you can also customise your notification content!

### JSON API Monitoring

Detect changes and monitor data in JSON API's by using the built-in JSONPath selectors as a filter / selector.

![image](https://user-images.githubusercontent.com/275001/125165842-0ce01980-e1dc-11eb-9e73-d8137dd162dc.png)

This will re-parse the JSON and apply formatting to the text, making it super easy to monitor and detect changes in JSON API results

![image](https://user-images.githubusercontent.com/275001/125165995-d9ea5580-e1dc-11eb-8030-f0deced2661a.png)

#### Parse JSON embedded in HTML!

When you enable a `json:` filter, you can even automatically extract and parse embedded JSON inside a HTML page! Amazingly handy for sites that build content based on JSON, such as many e-commerce websites. 

```
<html>
...
<script type="application/ld+json">
  {"@context":"http://schema.org","@type":"Product","name":"Nan Optipro Stage 1 Baby Formula  800g","price": 23.50 }
</script>
```  

`json:$.price` would give `23.50`, or you can extract the whole structure

### Proxy

A proxy for ChangeDetection.io can be configured by setting environment the 
`HTTP_PROXY`, `HTTPS_PROXY` variables, examples are also in the `docker-compose.yml`

`NO_PROXY` exclude list can be specified by following `"localhost,192.168.0.0/24"`

as `docker run` with `-e`

```
docker run -d --restart always -e HTTPS_PROXY="socks5h://10.10.1.10:1080" -p "127.0.0.1:5000:5000" -v datastore-volume:/datastore --name changedetection.io dgtlmoon/changedetection.io
```

With `docker-compose`, see the `Proxy support example` in <a href="https://github.com/dgtlmoon/changedetection.io/blob/master/docker-compose.yml">docker-compose.yml</a>.

For more information see https://docs.python-requests.org/en/master/user/advanced/#proxies

This proxy support also extends to the notifications https://github.com/caronc/apprise/issues/387#issuecomment-841718867


### Notes

- ~~Does not yet support Javascript~~
- ~~Wont work with Cloudfare type "Please turn on javascript" protected pages~~
- You can use the 'headers' section to monitor password protected web page changes

See the experimental <a href="https://github.com/dgtlmoon/changedetection.io/tree/javascript-browser">Javascript/Chrome browser support!</a>


### RaspberriPi support?

RaspberriPi and linux/arm/v6 linux/arm/v7 arm64 devices are supported! 


### Support us

Do you use changedetection.io to make money? does it save you time or money? Does it make your life easier? less stressful? Remember, we write this software when we should be doing actual paid work, we have to buy food and pay rent just like you.

Please support us, even small amounts help a LOT.

BTC `1PLFN327GyUarpJd7nVe7Reqg9qHx5frNn`

<img src="https://raw.githubusercontent.com/dgtlmoon/changedetection.io/master/btc-support.png" style="max-width:50%;" alt="Support us!"  />