Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
84.9KiB of the HTML response was required to render the above-the-fold content. This requires 3 network round-trips. Prioritize the above-the-fold content so that it can be rendered with only the first 2 round-trips' worth of HTML.
Only about 30% of the final above-the-fold content could be rendered with the HTML delivered within 2 round-trips.
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 36.2KiB (68% reduction).
Compressing https://api.boxever.com/v1.2/boxever-cross-domain.…A%2F%2Fwww.opodo.de%2F could save 17.4KiB (69% reduction).
Compressing https://api.boxever.com/v1.2/boxever-min.js?client…4xhDV9rsny82DvKa1iYFBN could save 17KiB (68% reduction).
Compressing https://www.opodo.de/travel/service/tracking/ua/customDimensions could save 967B (68% reduction).
Compressing https://dis.eu.criteo.com/dis/dis.aspx?p=3282&cb=3…32&sc_d=24&site_type=m could save 818B (52% reduction).
Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.