Featured
Guide
XLSX vs XLS: Modern and Legacy Excel Formats Compared
XLSX is an Open XML workbook; XLS is the older binary workbook format.
XLSX.now Blog
Guides, Tips & How-Tos for Images
Step-by-step guides on converting, compressing, and editing images. No jargon, no fluff, just what works.
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Guide
How to Convert XLSX to CSV: Sheets, Formulas, and Encoding
CSV represents one flat table, so workbook-only features need deliberate handling.
Guide
How to Convert XLSX to PDF With Correct Print Areas
Exporting a worksheet to PDF turns a flexible grid into fixed pages.
Guide
XLSX to HTML for Publishing Spreadsheet Tables
HTML is useful when spreadsheet data needs to be viewed in a browser.
Guide
XLSX to ODS: Spreadsheet Compatibility Checklist
ODS supports portable spreadsheet editing but not every Excel-specific feature.
Guide
CSV to XLSX: Restoring Types and Spreadsheet Structure
CSV does not record types, formulas, worksheets, or visual formatting.
Quick Format Guides
Short answers to common image format questions. Part of our full FAQ.
JPG vs PNG: Which Format Should You Use?
When to use each format, file size differences, and what transparency means for your choice.
JPG vs WebP: Size, Quality and Browser Support
WebP is smaller but not universally supported. Here is when that matters and when it does not.
HEIC vs JPG: Apple's Format vs the Standard
Why your iPhone shoots HEIC, what it means for Windows users, and how to convert.
JPG Compression Guide: Quality vs File Size
What quality setting to use, how much size you can save, and when compression hurts your image.
How to Convert JPG to PDF (Including Multi-Page)
Combine multiple JPG images into a single PDF, or convert one image to a shareable document.
RAW to JPG: Converting Camera Raw Files
How to convert NEF, CR2, ARW and other RAW formats to JPG without losing too much quality.