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Guide
XLS vs XLSX: Which Excel Workbook Format Should You Use?
XLS is the older binary Excel format; XLSX is the modern Open XML workbook format.
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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 XLS to CSV Without Losing Important Data
CSV stores one flat sheet and does not preserve formulas, formatting, charts, or multiple tabs.
Guide
How to Convert XLS to PDF With Readable Page Layouts
A spreadsheet must be mapped to fixed pages when exported to PDF.
Guide
Working With Legacy XLS Files Safely
Older workbooks may contain macros, external links, or features that modern tools interpret differently.
Guide
Preserving Dates and Leading Zeros When Converting XLS
Spreadsheet display formats can hide the underlying stored value.
Guide
XLS to ODS: Moving an Excel Workbook to OpenDocument
ODS improves interoperability with OpenDocument spreadsheet applications.
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.