Quick answer
Compare PNG, JPG, and WebP for photos, screenshots, transparency, compatibility, and privacy-focused local conversion.
Use the related browser-only tool after reading the safety notes, then verify the output before sharing.
Use JPG for broad photo compatibility
JPG is widely supported and usually works well for photographs. It uses lossy compression, which means the file can be smaller but some detail is discarded during export.
JPG does not support transparency. If you convert a transparent PNG to JPG, the transparent area may become a solid background depending on the export process.
Use PNG for transparency and sharp graphics
PNG is useful for screenshots, logos, icons, interface images, and graphics where sharp edges or transparency matter. It can be larger than JPG for photographs.
If small text is important, test JPG and PNG outputs. PNG often preserves screenshot text more clearly, while JPG may introduce compression artifacts.
Use WebP for modern web optimization
WebP can offer strong compression for websites and supports features such as transparency. It is widely supported in modern browsers, but some older workflows or upload forms may still reject it.
When compatibility is uncertain, keep a JPG or PNG fallback available. Always test the final file where you plan to upload it.
Privacy and conversion
Converting an image locally can create a fresh file without uploading the original. However, format conversion should not be described as guaranteed metadata removal in every case.
If privacy is the goal, convert if needed, then check the final file with a metadata viewer and inspect visible content before sharing.
FAQ
Is WebP always better?
No. WebP can be efficient, but compatibility and workflow requirements matter.
Should I convert PNG to JPG?
For photos, sometimes. For transparency, screenshots, and logos, PNG may be better.
Can conversion change file size?
Yes. Output size depends on format, dimensions, image content, and compression.