Most add-ons load code and resources at the same time Firefox is starting up. In most cases the impact in start-up time is minimal, but some add-ons can cause a noticeable slowdown.
Tugett n izegrar salayen-d tangalt akked iɣbula ilaqen di tnekra n Firefox. tugett n wakud, asemdu ɣef usenker drus aṭas acu kan kra n izegrar zemren ad sneɣṣen amecwaṛ-agi s waṭas.