<strong>Has the add-on been well-tested, and is it free of obvious or serious defects?</strong> One important thing that we look for when considering an add-on is whether its user reviews indicate that it has received thorough testing, and that it doesn't have serious problems or negative impacts on the browser. If reviewers report problems such as major performance issues, crashes, frequent problems using the functions of the add-on, or spamming of messages to the error console, you should take those reports to heart, and re-submit your add-on after you've addressed them as best you can. We don't expect you to perfectly optimize or have zero bugs &mdash; Firefox itself undergoes constant improvement in these areas &mdash; but we do want you to take reasonable efforts to minimize downsides, and to clearly call out cases where users may be surprised by those that remain.
<strong>Jo se dodank derje testował a jo wón bźez widobnych abo pógroznych zmólkow?</strong> Jadna wažna wěc, na kótaruž glědamy, gaž pśeglědujomy dodank, jo, lěc jogo wužywarske pógódnośenja pokazuju na to, až jo se pórědnje testował a až njama pógrozne problemy abo negatiwne wliwy na wobglědowak. Jolic pógódnośowarje daju problemy ako na pśikład pógoršenja wugbaśa, wowalenja, ceste problemy pśi wužywanju funkcijow dodanka abo zalaśe zmólkoweje konsole ze zdźělenjami, dejał se wy toś te pógódnośenja k wutšobje wześ a swój dodank znowego zapódaś, za tym až sćo toś te problemy tak derje ako móžno rozwězał. Njewócakujomy, až optiměrujośo dodank perfektnje abo až njama žedne programowe zmólki &mdash; Firefox sam pólěpšujo se na toś tych pólach stawnje &mdash; ale comy, až cyniśo pśiměrjone napinanja, aby njelěpšyny miniměrował a te pady pomjenił, pśi kótarychž wužywarje mógli zbytnych problemow dla pśełapjone byś.