This article seeks to understand how Latin American feminist public expression has gained algorithm-mediated visibility on social media. To this end, a cross-platform analysis was conducted for two issues: the legalisation of abortion in Argentina and the struggle to eliminate violence against women. The data were collected on four platforms: Twitter, Instagram, TikTok, and YouTube through the representative hashtags, ‘#abortolegal2020’, ‘#25N’, and ‘#niunamenos’. Digital critical methods were employed to gather data and approach high-visibility users, visual messages, and hashtagging practices. The findings reveal two configurations of algorithmic mediated visibility, formed by assemblages of actors, formats, and knowledge: platform vernaculars and algorithmic resistance. Both result in a mutual shaping between platforms, seeking to impose a quantitative logic of visibility, and feminist actors, using the tactics of algorithmic resistance to give visibility to the content, aesthetics, and resignified messages about their struggles.