Choose JPEG or PNG for a photo or screenshot

Choose JPEG for a photograph with continuous color when you do not need transparency. Choose PNG for a text-heavy screenshot, sharp interface graphics, or an image that needs a transparent background. JPEG uses lossy compression, while PNG preserves image data without that kind of loss and supports transparency. The MDN image format guide describes these format properties.

1. Look at what matters in the image. If it is mainly photographic detail, export a JPEG copy. If small text, thin lines, icons, or a transparent area must remain clear, export a PNG copy.
2. Keep the original while deciding. Export a new file in the chosen format so you can compare it with the source or try the other format if needed.
3. Check the saved file where it will be used. Open the export at its intended display size. For a screenshot, read the smallest important text and inspect the edges of letters and lines. For a photo, inspect areas with fine detail or gradual color changes. If transparency matters, place the PNG over a contrasting background and check its edges.

Let the destination settle close choices. A product photo destined for a page with a maximum upload size may need an export that keeps useful detail inside that limit. A logo that sits on a changing page background needs a file whose transparent area survives the export. A screenshot used to explain a setting needs readable labels more than photographic compression. Check the receiving form’s accepted extensions and maximum size alongside the visual comparison; format properties do not override a specific upload rule.

If both formats seem plausible, export one of each and compare the actual files for the details your audience needs to see. Also compare their file sizes if size matters for the destination. A format choice alone does not establish that an upload limit has been met.

JPEG is unsuitable when the background must remain transparent. PNG can preserve that background, but it may produce a larger file than JPEG for a photograph. Check the exported result before uploading or publishing it.

If the PNG is rejected for size, first ask whether the image really needs lossless edges or transparency. If it is a plain photograph, try a JPEG copy from the original and inspect it. If the JPEG makes screenshot text fuzzy or removes a needed clear background, return to the PNG and address the destination’s size requirement by changing dimensions or selecting a different source image. Avoid repeated exports from an already degraded JPEG.