Image Tools
Why Convert PNG to JPG?
Converting PNG to JPG can make your images dramatically smaller — but it is not always the right move. Here is when it makes sense and when it does not.
The core reason: file size
PNG uses lossless compression — every pixel is preserved exactly. This is great for quality but results in large files, especially for photographs. A high-resolution holiday photo might be 8MB as a PNG but only 600KB as a JPG at 90% quality. That is a 13× size reduction with almost no visible difference.
Smaller files load faster on websites, take less space in emails, and upload faster to social media. For photographic content, JPG is almost always the correct format.
When to convert PNG → JPG
When to keep it as PNG
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PNG to JPG Converter →Frequently asked questions
Why would I convert PNG to JPG?
The main reason is file size. PNG uses lossless compression that preserves every pixel, which means PNG files — especially for photographs — can be very large. JPG uses lossy compression that discards data the human eye struggles to detect, typically reducing file sizes by 70–90% compared to PNG. For photos on websites, in emails, or on social media, JPG is almost always the better choice.
What do I lose when converting PNG to JPG?
You lose two things: lossless quality and transparency. JPG uses lossy compression, so some image data is permanently discarded — though at quality settings of 85% and above this is visually imperceptible for most images. JPG also does not support transparent backgrounds; any transparent areas in your PNG will be filled with white (or another solid colour) in the JPG output.
When should I NOT convert PNG to JPG?
Do not convert PNG to JPG if: the image has a transparent background you need to preserve; the image contains text, logos, or sharp geometric shapes (JPG compression creates visible artefacts on hard edges); you plan to edit the image further (converting to JPG introduces quality loss that accumulates with each re-save); or the image is small enough that file size is not a concern.
How much smaller will the JPG be?
For photographs, a PNG converted to JPG at 90% quality is typically 5–10× smaller. A 5MB PNG photo might become a 400–800KB JPG. For graphics with flat colours and sharp edges, the size difference is smaller and the quality loss is more visible — in these cases PNG is the better format regardless of size.
Does PNG to JPG conversion reduce image quality?
At high quality settings (85–95%), the quality difference is visually imperceptible for photographs. At lower settings, you will see compression artefacts — blurring around edges, colour banding, and blocky areas. Always preview the result before committing to a quality setting, especially if the image will be viewed at full size.
Can I convert PNG to JPG without losing transparency?
No — JPG does not support transparency at all. When converting a PNG with transparency to JPG, the transparent areas must be filled with a solid colour. White is the standard default. If you need to preserve transparency, use PNG, WebP, or another format that supports it.