Pageviews are registered by a specially generated image. The image url is signed with a secret key so malicious users cannot easily tamper with your pageviews.
To show the image for an entry:
{# render the image for registration #}
{{ entry | views_work_image }}
If you don't want to use a pixel, you can increase views programmatically, for example when an asset is shown:
{% set asset = craft.assets.one %}
{% if asset %}
{% do asset.viewsWork.increment() %}
<img src="{{ asset.url }}" style="max-width: 100px;" />
Views: {{ asset.viewsWork.total }} / {{ asset.viewsWork.thisMonth }} / {{ asset.viewsWork.thisWeek }} / {{ asset.viewsWork.today }}
{% endif %}
Sometimes you'd want a pageview to count less than others. This can happen if you use pageviews as a popularity index and want to balance. In that case you can pass a weight factor to the image. In the case below, the factor is 1.5; every 2 pageviews, an extra pageview is counted on average.
{# render the image for registration #}
{{ entry | views_work_image({factor: 1.5}) }}