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AI PDF Summarizer — Extract Key Takeaways from PDF Documents Free
Summarize lengthy PDF reports, research papers, legal contracts, and ebooks online free. Extracts page text and generates structured summaries.
Add Bates Numbering to PDF (Legal Discovery Stamper) – Free Online Tool
Add standardized Bates numbers, prefixes, suffixes, and confidentiality markers to PDF documents for litigation discovery and legal compliance audits. Free and 100% private.
2 Pages Per Sheet PDF Converter (2-Up Booklet Spread) – Free Online Tool
Convert PDF documents into 2 pages per sheet (2-Up) side-by-side spreads and folded booklet layouts with spine gutter adjustment, reading flow, and client-side PDF export.
Z-Test Calculator – One-Sample & Two-Sample Hypothesis Test
Perform one-sample and two-sample hypothesis Z-tests for population means and proportions with exact two-tailed and one-tailed p-values.
Z-Score Calculator – Free Normal Distribution Probability & Percentile Lookup
Convert raw values into standardized Z-scores, normal percentiles, and tail areas.
Wilcoxon Signed-Rank Calculator – Paired Non-Parametric Test
Perform the Wilcoxon signed-rank test for paired matched-pair samples, sum of positive and negative ranks (W+, W-), and p-value.