Shahefu Tools brings together 120+ free online utilities covering image processing (compress / crop / matting / format conversion / watermark), PDF tools (PDF to Word / Excel / image, merge / split / encrypt / extract text), developer tools (JSON formatter / timestamp converter / regex tester / SQL beautify / hash / Mermaid renderer), life services (calendar / lunar / weather / currency exchange / income tax / BMI / retirement age), OCR text recognition (general text / handwriting / table restore / document layout), QR code generator, encryption (MD5 / SHA / AES / RSA / Bcrypt / JWT), and network tools (IP lookup / DNS / Whois).

Privacy-first: most tools run entirely in your browser — files never leave your device. The few that need server processing (PDF conversion, OCR) delete temporary files immediately after processing; passwords are never logged; error messages mask IPs — privacy is built into the architecture, not an afterthought.

Zero friction: all tools are completely free, no registration required, no download or installation. Works in Chrome / Edge / Firefox / Safari and other modern browsers, on both desktop and mobile.