Search a string in Kibana

Hi,

I need a DSL query to filter some value from the requests.

From the below requests i need to exclude requests which contains .html,.gif,.css,.jpg at the ending. i need only the requests which are without those extensions.

kindly help me to get that search query

Field name : request.keyword

request.keyword: Descending
/Kibana/{{pdfurlpreview}}
/Kibana/webja/bootstrap/3.3.4/css/bootstrap
/Kibana/i18n/en
/Kibana/views/UHg/transactionposting.html
/Kibana/images/login-logo.jpg
/Kibana/resources/styles.css
/Kibana/images/money.png

If you're using the Filter bar with KQL, this should work not (request.keyword : *.html or request.keyword : *.gif or request.keyword : *.css or request.keyword : *.jpg). If you want the actual json of the filter for some other place, just save a search with this filter and then copy the filter from the Saved Search object in Management.