JFIF to PNG, explained
Save the decoded pixels of a JFIF photo as PNG for an editor or workflow that requires PNG. PNG avoids another lossy encoding step, but it retains the artifacts and opaque background already present in the JPEG source.
Choose JFIF images and wait for their previews.
Keep PNG selected. No lossy quality slider is needed for PNG output.
Convert, compare the actual size, and download the PNG copies or a batch ZIP.
A JPEG source with PNG output
A .jfif file commonly stores JPEG image data. The browser decodes that image before the tool writes a PNG. This is a change of output encoding, not simply a new extension: renaming a .jfif to .png would not create a valid PNG image.
What lossless means for this conversion
PNG preserves the decoded raster without adding JPEG compression. It does not reconstruct detail lost when the original photo was compressed, sharpen a blurry picture or guarantee preservation of the original color profile. Keep the JFIF original as well as your exported copy.
Expect a potentially larger file
Photographs often contain fine texture and many colors, so a PNG copy can take substantially more space than the compressed JPEG source. No fixed size reduction is promised. Compare actual byte sizes after conversion, or use JFIF to JPG when a receiving service accepts JPEG.
PNG does not remove the background
JPEG-based JFIF images are opaque. Although PNG supports transparency, this conversion does not identify or remove the background. At Original size the output keeps the decoded dimensions and picture; use a separate editing workflow for cutouts or background removal.
Batch delivery without uploads
Each JFIF becomes a separate PNG; multiple outputs can be downloaded together as a ZIP. The converter accepts up to 50 files of 64 MB each, with 24 megapixels and 16,384 pixels per side. Total outputs must fit 256 MB, so use smaller batches if the PNG copies are large.