Why Does Google Keep Rewriting Your Meta Description?

Google rewrites meta descriptions constantly when the original doesn't clearly match the searcher's query, is missing, is duplicated across pages, or runs too long and gets truncated awkwardly.

The fix:

keep descriptions under roughly 160 characters, make each one unique per page (no copy-pasting the same one site-wide), and make sure it actually answers what someone searching that exact phrase would want to know — not just a generic summary of the page.