Convertisseur JPG en PNG

Convert JPG images to high-quality transparent PNG format locally in your browser.

🖼️

Drag & Drop JPG files here

or click to browse from your device

Converting files...

Foire Aux Questions (FAQ)

Why convert JPG to PNG format? ➕

PNG format uses lossless compression and supports alpha channel transparency, making it ideal for logos, vector graphics, text screenshots, and web design assets.

Is my image data kept safe and private? ➕

Yes! Processing occurs 100% inside your web browser via HTML5 Canvas and JavaScript Web Workers. Your files are never uploaded to any cloud server.

Can I convert multiple JPG images at once? ➕

Absolutely. You can select or drag-and-drop multiple JPG files into the queue and download all converted PNGs in a single ZIP file.

Does converting JPG to PNG increase image file size? ➕

Because PNG is a lossless format, the file size may be slightly larger than compressed JPG, but image quality and clarity are 100% preserved without compression artifacts.

Does this tool work on iPhone, Android, and mobile devices? ➕

Yes! Our client-side image converter works seamlessly on Chrome, Safari, Firefox, Edge, iOS, Android, and desktop browsers.

Why Use Our Free Online Convertisseur JPG en PNG?

Convert JPG images to transparent PNG format online for free with lossless quality. Powered by modern browser technologies, our tool processes your files locally on your computer or mobile device. This means zero wait times, zero bandwidth consumption, and complete security for your private files.

Key Benefits & Features:

100% Client-Side Privacy: Your files stay in your browser. We never upload or store your files on external servers.
Blazing Fast Performance: Instant processing utilizing your device's native CPU/GPU hardware.
Conversion par Lot: Process multiple files simultaneously and download them in a convenient ZIP package.
No Registration Required: Free unlimited use without accounts, subscriptions, or hidden charges.
Cross-Platform Compatibility: Works seamlessly across Windows, Mac, Linux, iOS, and Android web browsers.

À propos Convertisseur JPG en PNG

Our online Convertisseur JPG en PNG allows you to transform lossy JPEG files into crisp, high-resolution PNG images with zero quality degradation. PNG is ideal for web graphics, logos, transparent overlays, and digital artwork that require lossless reproduction.

Comment Utiliser Convertisseur JPG en PNG Étape par Étape

Upload JPG Images

Drag & drop your JPG files into the upload area or click Select JPG File.

Automatic Processing

Our browser engine decodes your JPG file locally into high-DPI canvas pixels.

Convert to PNG

Cliquer sur Convertir to PNG to encode the raw image data into a 32-bit PNG file.

Instant Download

Download converted PNG files individually or as a single ZIP package.

Caractéristiques Clés et Avantages Techniques

Lossless Quality: Re-encodes JPEG images without introducing additional compression artifacts.
Conversion par Lot: Convert dozens of JPG files simultaneously in parallel.
100% Client-Side Privacy: Image pixels are decoded and rendered entirely inside your browser memory.
Zero Registration: Free unlimited use without accounts, passwords, or daily caps.
Cross-Platform: Works smoothly on desktop computers, tablets, iPhones, and Android phones.

Spécifications Techniques et Détails de Sécurité

Spécification	Détails
Nom de l'Outil	Convertisseur JPG en PNG
Format d'Entrée Pris en Charge	`JPG / JPEG`
Format de Sortie	`PNG`
Moteur de Traitement	HTML5 Canvas 2D & WebAssembly
Confidentialité & Sécurité Status	🔒 100% Privé Côté Client (Zéro Envoi sur Serveur)
Limite de Taille de Fichier	Illimité (Dépend de la mémoire RAM de l'appareil)
Compatibilité du Navigateur	Chrome, Safari, Edge, Firefox, iOS Safari, Android Chrome