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PNG to JPG is usually about file size: photographic PNGs are enormous, and the same image as a JPG at 85–90% quality is typically 5–10× smaller with no visible difference. Drop in one PNG or a batch — conversion runs locally on your device, and before/after sizes show per file.
One thing to know: JPG has no transparency. Any transparent areas in your PNG are flattened onto a white background — if you need transparency preserved, convert to WebP instead.
Frequently asked questions
When should I convert PNG to JPG?
When the image is photographic and size matters — uploads with limits, email, web pages. Keep PNG for screenshots with sharp text, logos and anything needing transparency; JPG's compression smears hard edges.
What happens to transparent backgrounds?
They become white — JPG simply has no alpha channel. If the destination needs transparency, WebP gives you small files and keeps the alpha.