JPG en PNG

Convertissez des images JPG au format PNG en ligne. Conversion sans perte, qualité maximale.

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Fichier trop volumineux. La limite est de 100 Mo.

Supporté : .jpg, .jpeg (Max 100 Mo)

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info À propos de cet outil
Convertissez des images JPG au format PNG. Conversion sans perte qui préserve les détails.

File size: PNG output is typically 2–5x larger than the original JPG due to lossless storage.

Quality: The conversion is lossless in the PNG direction — no new quality is lost. However, existing JPG compression artifacts are preserved in the PNG.

format_list_numbered Comment convertir
  • 1
    Importez l'image JPG/JPEG.
  • 2
    Convertissez en PNG.
  • 3
    Téléchargez le fichier.
help FAQ

Will the image quality improve after converting to PNG?

No. The conversion to PNG is lossless going forward, but it cannot recover quality already lost from JPG compression. You're preserving what's there, not improving it.

Does PNG support transparency?

Yes — but the JPG you upload has no transparency data. The resulting PNG will have a solid white or opaque background. To get a transparent background, you need a background removal tool first.

Why is the PNG so much larger than the JPG?

PNG stores pixel data losslessly without compression artifacts. A typical photo PNG is 3–5x larger than the equivalent JPG — this is expected and correct.

When should I use JPG-to-PNG?

Use this conversion when you need to edit an image further without additional quality loss, or when a tool requires PNG format (e.g., some design tools, certain web frameworks).
lightbulb Common use cases
  • check_circle Converting product photos to PNG for further editing in design tools
  • check_circle Preparing images for tools or platforms that only accept PNG
  • check_circle Creating a PNG base before applying transparency effects
  • check_circle Archiving images in a lossless format for future editing
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