ObjectiveTo assess the feasibility of Pare de fumar conosco, a web-based smoking cessation decision-making tool, among patients with chronic conditions in Brazil.MethodsWe recruited 85 Brazilian smokers in two clinical centres for chronic conditions to complete Pare de fumar conosco. Outcome measures included interest in using smoking cessation resources and self-reported 7-day point prevalence abstinence 12 weeks following the intervention.ResultsThe average age of participants was 54.2 years old (SD=10.5) and 77.9% had not completed high school. All participants were daily smokers and the majority smoked ≥11 cigarettes per day (63.5%). Pre–post intervention interest in using pharmacotherapy and group counselling significantly increased (82.4% vs 22.4%, p≤0.0001; and 85.9% vs 21.2%, p≤0.0001, respectively). At 12 weeks, eight participants (9.4%) reported 7-day point prevalence abstinence using intention-to-treat analysis (35.2% follow-up rate).ConclusionThe Pare de fumar conosco smoking cessation web-based tool significantly increased interest in pharmacotherapy and behavioural counselling. Additional testing as a formal randomised clinical trial appears warranted.