Convert JPG to PNG Online

Converting a JPG to PNG on this page is a three-step loop: drop the file, watch the conversion run, and download the result. The tool decodes your JPG and re-encodes it as a lossless PNG, preserving every pixel exactly as it arrived, and because both formats are preselected there is no picker to fiddle with. The whole job runs in your browser with the Canvas API rather than on a server. To make the change concrete: a 1.4 MB photo exported as PNG typically lands between 6 and 9 MB, because lossless storage keeps every pixel that the JPG had partly thrown away.

1. 1Drop or select a JPG. Files up to 50 MB are accepted.
2. 2Watch the conversion run in place. No quality slider is needed, because PNG output is lossless.
3. 3Download the PNG. Your original JPG is never modified.

Size grows because the two formats store data differently. JPG is lossy, so the encoder discards detail it thinks you will not notice and describes the rest in a compressed way. PNG is lossless, so it records every pixel without throwing anything away. For a photo the gap is large: a 900 KB JPG of a landscape can become a 6 to 10 MB PNG, roughly five to ten times heavier. For flat graphics such as screenshots and logos the gap is smaller, since those images compress well in either format.

• Photos grow the most, often 5 to 10 times larger than the JPG source.
• Screenshots and UI captures grow less, sometimes only 2 to 3 times larger.
• Flat logos and simple graphics stay close to the original size, since both formats handle them efficiently.

PNG is lossless, but the detail your JPG already discarded does not come back. If the source JPG shows blocky edges or color banding from heavy compression, those artifacts are baked in and the PNG will carry them over pixel for pixel. What the conversion does buy you is a clean starting point: no further quality is lost from this moment on, and you can crop, resize, or save the PNG as many times as you like without accumulating damage. That is why the step is worth doing before editing rather than after.

Lossless comes at a size cost, and for some jobs that cost buys nothing. If the image is a finished photo headed straight to a website or an email, keeping it as JPG, or converting to WebP, is the lighter choice. Reach for PNG when transparency, editing, or a lossless master is the goal; skip it when the only goal is a small file.

• Keep the JPG for finished photos that will not be edited again.
• Keep the JPG when the image is already the right size and quality for its destination.
• Convert to PNG when the image will be edited, printed, or archived as a lossless master.

The conversion runs entirely on your device through the Canvas API. Nothing is uploaded, no account is required, and there is no queue to wait in. That makes the page a sensible choice for photos, internal screenshots, or client assets you would rather not hand to a third-party service. Processing starts the moment the file is selected, and a typical conversion completes in under a second.