JPG to PNG Converter
Convert JPG and JPEG images to PNG files in your browser.
Written by Anil Gautam · Updated
Why does a JPG get bigger when converted to PNG?
JPG keeps photos small by discarding detail the eye barely notices. PNG is lossless, so it must store every decoded pixel exactly, including the noise and faint block patterns that JPG compression left behind. A 4000 x 3000 photo has 12 million pixels, and the canvas used for conversion holds 4 bytes for each: 48,000,000 bytes, or 45.78 MB, before PNG compression starts. Photos compress far less than flat graphics, so expect the PNG to be much larger than the JPG.
Each card shows the original and new size side by side. There is no quality slider, since PNG has no lossy setting to adjust.
When does converting JPG to PNG make sense?
PNG is useful when an image will be edited and saved many times, because each save adds no further compression loss. Some design tools, templates and upload forms also insist on PNG. If your goal is a transparent logo, Transparent PNG Maker accepts the JPG directly and returns a PNG with the background colour removed. For a lossless copy aimed at web pages, Image to WebP Converter at 100% writes lossless WebP in Chrome and Edge, which is usually lighter than PNG.
Conversion is the wrong move for shrinking a photo or meeting a KB limit on an application form. Compress Image to 200KB and Photo Resize to 20KB keep the JPG format and aim for a target size.
What does the converter keep and drop?
Pixel dimensions stay the same. Camera metadata is not copied, so the PNG carries no camera details or GPS location; open the original in EXIF Viewer & Remover if you need to see what it held. File names change only at the end, with beach.JPEG becoming beach.png, and a batch of two or more downloads as converted-png-images.zip. Each card has its own Download PNG button, and a damaged file shows Could not convert this image on its card while the rest of the batch carries on.
Only JPG and JPEG files are accepted. Other formats in a drop are skipped, and a drop with no JPG files at all shows Please choose JPG or JPEG images. A .jfif file that your browser labels as JPEG is accepted too and keeps its full name with .png added, so scan.jfif becomes scan.jfif.png. For WebP files, use WebP to PNG Converter.