Convert JPG to PNG Instantly

The one thing this conversion cannot do

It cannot undo JPEG compression. When a photo was saved as JPG, the encoder discarded high-frequency detail and quantised the rest; that information is gone from the file. Converting to PNG faithfully preserves what remains — artefacts, banding and all — and simply stops anything further being lost.

So this is a forward-looking move. It protects the image from here on. It does not repair it.

When it is genuinely the right call

• You are about to annotate a screenshot or a photo and will re-save it several times.
• You are compositing the image into a design and want no generation loss at each step.
• A tool or platform requires PNG — some documentation systems, some print-on-demand services, most favicon generators.
• You need to add transparency to the image after removing a background.
• You are archiving an edited version and want the edit stored exactly.

Size expectations

Note the last row: for flat-colour graphics PNG frequently beats JPG outright, because DEFLATE compresses large areas of identical colour extremely well while JPEG wastes bits on ringing around the edges.

Privacy

Nothing is uploaded. The file is decoded and re-encoded by your own browser using the Canvas API, so the image never leaves your device and there is no queue, no size cap and no account.