Find Molecule vs Combine PDF Files

Find chemical structure by ¹³C NMR chemical shifts and monoisotopic mass (m/z of molecular ion). Instant search in a database of about 33 million known structures extracted from PubChem compounds database. Each compound has link to corresponding PubChem record.

PDF Merger - Combine PDFs Effortlessly Transform the way you work with PDFs. PDF Merger makes combining multiple PDF documents simple, fast, and beautiful. Whether you're organizing receipts, merging contracts, or consolidating reports, our app handles it all with elegance and speed. BEAUTIFUL & INTUITIVE • Stunning glass-morphic design that feels right at home on iOS • Drag and drop support for effortless file management • Smooth animations and responsive interactions • Dark mode optimized interface POWERFUL FEATURES • Merge unlimited PDF documents • Custom page range selection - pick exactly which pages to include • Reorder files with simple drag and drop • Live thumbnail previews of your PDFs • Real-time file size estimates • Search through your file list • Full PDF preview before merging SMART & EFFICIENT • Lightning-fast merging engine • Progress tracking with detailed status updates • Automatic duplicate detection • Customizable output filenames with multiple patterns • Optimized file sizes without quality loss SEAMLESS SHARING • Share merged PDFs directly from the app • Compatible with Files, iCloud Drive, Dropbox, and more • Export to any app that supports PDFs • No file size limits PRIVACY FIRST • All processing happens on your device • No internet connection required • Your documents never leave your iPhone or iPad • No tracking, no data collection NO SUBSCRIPTIONS • One-time purchase • All features included • No hidden costs • Free updates PERFECT FOR: • Students combining study materials • Professionals merging contracts and reports • Teachers organizing lesson plans • Anyone managing receipts and invoices • Travelers consolidating tickets and documents • Businesses creating presentation packets WHY PDF MERGER? Unlike clunky online services that require internet, charge monthly fees, or compromise your privacy, PDF Merger puts you in control. Everything happens on your device, instantly and securely. No uploads, no waiting, no subscriptions. The app features a gorgeous, modern interface that makes document management feel effortless. From the moment you open it, you'll appreciate the attention to detail - from smooth animations to intelligent file handling to thoughtful features like custom page ranges and duplicate detection. Whether you need to merge two files or twenty, PDF Merger handles it with speed and grace. The app shows you exactly what's happening with real-time progress updates and gives you complete control over the output with customizable filenames and page selection. WHAT USERS ARE SAYING: "Finally, a PDF merger that doesn't look like it's from 2010!" "Fast, beautiful, and does exactly what I need." "The page range feature is a game-changer." "Love that it works offline and respects my privacy." GET STARTED TODAY Download PDF Merger and experience the easiest way to combine PDFs on iOS. No learning curve, no complications - just beautiful, powerful PDF merging. Questions or feedback? We'd love to hear from you! Contact: [your email]