Sub-editors refine content produced by reporters and writers by correcting grammar, checking facts, rewriting for clarity, writing headlines, ensuring adherence to style guides, and preparing stories for publication. They act as a crucial quality-control layer in newsrooms, requiring exceptional linguistic skill, attention to detail, and rapid decision-making under deadlines. Digital-era sub-editing also involves SEO optimization, headline testing, metadata management, and cross-platform formatting. Their role remains vital despite automation, as human editorial judgment is irreplaceable for nuance, ethics, and readability. Opportunities continue across news outlets, magazines, digital media, and content-driven organizations.