File ConversionOctober 7, 2026 1 min read
The Ultimate Guide to File Conversion Formats
PDF, DOCX, XLSX, WEBP, AVIF… Understand what every major file format is for and when to convert between them.
By FileFlexify Team
Choosing the right format makes files smaller, easier to edit and more compatible. Here's a practical cheat sheet.
Documents
- PDF — the universal format for sharing and printing. Looks identical everywhere.
- DOCX — Microsoft Word's format, best when someone needs to edit the text.
- ODT — the open standard equivalent, used by LibreOffice.
- RTF / TXT — maximum compatibility, minimal formatting.
Spreadsheets
- XLSX for full spreadsheets with formulas and formatting.
- CSV for raw data you'll import into another tool or database.
Images
| Format | Strength | Use it for |
|---|---|---|
| JPG | Small photos | Photography, email |
| PNG | Lossless, transparency | Logos, screenshots |
| WEBP | 25–35% smaller than JPG | Websites |
| AVIF | Even smaller than WEBP | Modern websites |
| SVG | Infinitely scalable | Icons, illustrations |
Common conversions
- PDF to Word to edit a document you received.
- Word to PDF before sending a final version.
- PNG to WEBP to speed up your website.
- JPG to PDF to bundle scanned receipts.
#formats#guide
Put this into practice
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