XLSX to PDF | Fast & Free & Secure
Convert XLSX to PDF online in seconds. No signup. Secure processing; files auto-delete in ~2h. Works on mobile & desktop.
Smart Auto-Detection – ConvertSea
No need to select your file type — we've already detected it.
Just upload your file and choose the format you want to convert it to. Our system automatically recognizes the input format, so you can focus on getting the output you need.
What is XLSX?
XLSX is the modern Microsoft Excel workbook format introduced with Office 2007. Based on the Office Open XML standard, an .xlsx file is a compressed package of XML parts that describe worksheets, cells, styles, and embedded media. This structure makes files smaller, more resilient, and easier to recover than the legacy .xls. XLSX supports formulas and functions, tables, named ranges, data validation, conditional formatting, charts, and pivot tables. Because it does not contain VBA macros (those use .xlsm), it’s generally safer to share. You can open or edit XLSX with Excel, Google Sheets, LibreOffice Calc, and Apple Numbers, and convert it to CSV, PDF, or other formats. Common uses include budgets, dashboards, financial models, logs, and scientific datasets where precise calculation and layout matter.
What is PDF?
PDF (Portable Document Format) is a fixed-layout file format designed to present documents consistently across devices and operating systems. A .pdf can embed fonts, vector graphics, images, layers, hyperlinks, bookmarks, and metadata so pages render the same everywhere. The format supports interactive forms (AcroForm/XFA), annotations, encryption, permissions, and digital signatures for workflow and security. Accessibility features include tagging, alternate text, and reading order; specialized profiles like PDF/A target long-term archiving. PDFs open in Adobe Acrobat, most web browsers, and free tools, and export cleanly to print or formats like Word or images when needed. Typical uses include contracts, manuals, research papers, invoices, and brochures where precise layout matters. Because PDF is an ISO standard (ISO 32000), it’s widely supported and reliable for sharing and preservation.
Upload Your File
Upload your file (drag & drop or click). Input type is auto-detected—no need to choose it.
Pick Format & Options
Pick the output format and (if available) adjust options like OCR, quality, bitrate, or resolution.
Convert & Download
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Convert Your Files Instantly – Fast, Secure & Free
Welcome to ConvertSea, the ultimate online tool to convert your files with speed, accuracy, and zero hassle. Whether you're changing image formats, converting videos, editing documents, or extracting audio, our platform delivers instant, high-quality results across hundreds of file types.
No downloads, no registration, and no watermarks — just upload your file, choose the format you need, and download your converted file in seconds.
From PDF to Word, MP3 to WAV, JPG to PNG, or MP4 to MOV, ConvertSea ensures that your content stays clean, secure, and exactly how you want it.