[Chartjs]-How to display large amount of information properly without cramping too much in Chart.js

You can use the decimation plugin that lets you define the 'lttb' or 'min-max' algorithm option.

LTTB decimation reduces the number of data points significantly. This is most useful for showing trends in data using only a few data points.

Min/max decimation will preserve peaks in your data but could require up to 4 points for each pixel. This type of decimation would work well for a very noisy signal where you need to see data peaks.

Please take a look at the Data Decimation Sample and see how it works.