Convert for the destination
The best image format depends on where the file will be used. JPG is common for photos, PNG is useful for transparency and screenshots, WebP and AVIF can reduce web delivery size, and PDF is useful for documents or scans.
A conversion should solve a compatibility or publishing problem. Keep a higher-quality source file when the image may need future edits.
- Use JPG or PNG when a form or platform rejects newer formats.
- Use WebP or AVIF for modern web delivery when compatibility allows.
- Convert images to PDF when they need to travel as a document.
Check quality after conversion
Image conversion can change transparency, color, file size, and visible sharpness. Review the exported file at its real display size, especially for logos, screenshots, UI captures, and product images.
When converting from HEIC or AVIF for compatibility, compare the converted copy against the original before deleting anything.
Use Base64 only when it fits
Base64 image strings are useful for snippets, small inline assets, and quick developer tests. They are not a universal replacement for normal image files because they can make pages or payloads larger.