Loading…
100% in-browserBrowse tools
Loading…
Switch an image between JPG and PNG without a desktop editor. Kreviax reads the source format and converts to the other one, handling transparency honestly along the way.
Drag an image here, or
JPG, PNG or WebP · up to 30 MB
JPG is lossy and efficient for photos; PNG is lossless and best for flat graphics with hard edges. Converting between them is a re-encode, not a quality upgrade — going to JPG makes the file smaller, going to PNG makes it larger without adding detail. This tool auto-detects your source format from its actual contents, not its file extension.
This tool runs entirely in your browser using the Canvas API. Your file is never uploaded to a server, stored, or sent anywhere — close the tab and nothing remains.
Images are processed on your device — nothing is uploaded.
No. A JPG has permanently discarded detail. Saving it as PNG preserves exactly what remains — including any compression artefacts — at a larger file size. Nothing is added back.
JPG cannot store transparency, so the see-through areas are filled with a background colour you choose (white or black). This is permanent — keep the PNG if you might need the transparency later.
For photos, JPG is far smaller. For flat graphics with large areas of solid colour, PNG can be competitive or smaller. Convert and compare — the tool shows both sizes.
No. The converted image has exactly the same pixel dimensions as the source. Only the format and file size change.