If you can't get to a shop immediately, there are a few home-based interventions. Best Way To Fix a Cracked Windshield - EASY DIY
Glass expands and contracts with temperature changes. This natural flexing is the number one cause of cracks spreading. prevent windshield crack from spreading
...you likely need a full windshield replacement. For chips smaller than a quarter, a professional repair is often inexpensive (and sometimes covered by insurance) and can restore the windshield to near-original strength. If you can't get to a shop immediately,
For cracks under 6–12 inches (depending on the technician’s assessment), resin injection is the gold standard: resin injection is the gold standard: