File conversion is one of the most common daily tasks. Here's a reference guide to the most useful conversions and how to do each one.
Documents
- PDF → Word (DOCX): Best with digitally-created PDFs. Complex layouts may need cleanup. Free tool →
- Word → PDF: Perfect format preservation for sharing. Platform-independent.
- Excel → PDF: Preserves layout, formulas display, gridlines. Choose landscape or portrait.
- HTML → PDF: Full CSS support. Useful for invoices and web archiving.
Images
- JPG → PNG: Lossless + transparency support. Larger files.
- PNG → JPG: 60–80% smaller for photos. No transparency.
- SVG → PNG: Export vectors at any resolution you specify.
- WebP: 25–35% smaller than JPG at equal quality — ideal for web.
Data
- JSON → CSV: Flatten API responses for Excel. Handles nested objects.
- CSV → JSON: Structured data for APIs and databases.
- XML → JSON: Convert legacy formats to modern JSON.
Tips
- Digitally-created PDFs convert far better than scanned ones
- Complex multi-column layouts need manual cleanup
- Always test with a sample page before converting large documents
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