XLSX.write() taking too long
Author: irfanyounasCreated Jun 28, 2014Updated May 24, 2026
LabelsPerformance
Hi, I have tried to write 3 columns and N number of rows, below we can see the time taken (on my i3 machine):
N --------------- TIME (s) 10000 --------------- 9 20000 --------------- 35 30000 --------------- 90 65000 --------------- 453
We can see that as we increase the number of rows, the time taken by the write() function increases dramatically (its not linear), its taking too long for 65000 records. Can we have some other way which is efficient?
Source: SheetJS/sheetjs