<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>Je so přidatk derje testował a je wón bjez wočiwidnych abo chutnych zmylkow?</strong> Jedna wažna wěc, na kotruž hladamy, hdyž přidatk přepruwujemy, je, hač jeho wužiwarske pohódnoćenja na to pokazuja, zo je so porjadnje testował a zo nima chutne problemy abo negatiwne wliwy na wobhladowak. Jeli pohódnoćowarjo problemy kaž na přikład wukonowe pohubjeńšenja, spady, huste problemy při wužiwanju funkcijow přidatka abo zapławjenjowanje zmylkoweje konsole přez zdźělenki, měł sej wy tute pohódnoćenja k wutrobje brać a swój přidatk znowa zapodać, po tym zo sće tute problemy tak derje kaž móžno rozrisał. Njewočakujemy, zo přidatk perfektnje optimizujeće abo zo žane programowe zmylki nima &mdash; Firefox sam so na tutych polach stajnje polěpšuje &mdash; ale chcemy, zo přisprawne napinanja činiće, zo byšće njelěpšiny miniměrował a te pady mjenował, při kotrychž wužiwarjo móhli zbytnych problemow dla překwapjeni być.