JPG to PNG Converter

JPEG discards detail to shrink files; PNG stores (most) pixels losslessly. For photos, PNG almost always weighs more than a comparable-looking JPEG because it is not allowed to throw away subtle gradients. That trade-off buys you editing headroom and cleaner re-saves without new compression cycles.

No. JPEG has no alpha channel, so the decoded bitmap is fully opaque. PNG can store transparency, but this converter does not invent a cut-out—you would need a mask or editor to add alpha. Expect a solid rectangle the same size as your original.

You cannot recover details JPEG already discarded—that information is gone forever. What “lossless” means here is: the converter does not apply a second lossy step after decode. Pixels you see after decode are what PNG stores; no new JPEG ringing is added.

Use PNG for graphics with sharp lines, text in raster form, or when your toolchain reject JPEG artifacts (some print and design QA flows). For finished web photos where only file size matters, staying in JPEG or WebP is usually smarter.

Browser canvas drawing respects how the browser decodes the file (including typical EXIF orientation), but the exported PNG reflects flattened RGBA pixels—metadata from the original JPEG is not preserved as EXIF in this simple client export.

This tool expects something the browser decodes as a normal bitmap—usually JPEG from disk or clipboard. If the OS hands HEIC to the page with a type the canvas cannot read, conversion will fail; export JPEG from Photos first on problematic phones.