Toolzo is 300+ free online tools that run entirely in your browser — PDF merge, split and compress, image compression and resizing, passport photo formatting, GIF maker, resume and invoice generators, plus 100+ calculators (EMI, SIP, GST, income tax, BMI) and dev utilities like a robots.txt generator and UTM builder. Nothing is uploaded. Files are processed on your device, never a server. No account, no paywall, no watermarks.