FreeTools guides
Practical articles that explain when to use each tool, how to avoid common mistakes, and how to connect small tools into cleaner workflows.
Learn how to move from raw exam scores to weighted totals, standard scores, T scores, and percentile rank, with clear examples for teacher exams and classroom reporting.
A clear guide to standard-score vocabulary: what Z score, T score, and PR mean, when to use each one, and how to avoid over-reading a score report.
Use classroom random tools to pick students, build groups, arrange seats, and run quick activities while keeping the process visible and fair.
Read articleChoose the right PDF tool for common file tasks: combine documents, split chapters, reduce file size, reorder pages, extract pages, delete pages, or convert images.
Learn when to compress, resize, crop, or convert images, and how to choose between JPG, PNG, WebP, and QR code output for everyday work.