100% Client-Side • Zero Cloud Uploads

JPG to PNG Converter

Convert JPG/JPEG images to lossless PNG format instantly.

Drop your image here

Drag & drop single photo for Studio Mode, or multiple photos for 1-Click Batch Processing

Choose File
JPG, PNG, WebP, GIF, BMPPaste supported (Ctrl+V / ⌘V)Max: 50 MB

Your images stay on your device

Processing happens 100% locally in your browser. Files are never uploaded to any cloud server.

Step-by-Step Guide

How to use this tool

1

Drop JPG Image

Select your JPG or JPEG file.

2

Convert to PNG

Conversion happens automatically in real-time.

3

Download PNG

Save your crisp, uncompressed PNG file.

Key Capabilities

Why use Image Toolkit?

Lossless Conversion

Maintains full color depth and pixel precision.

Fast In-Browser Processing

Zero server uploads means instantaneous downloads.

Technical Specifications

How JPG to PNG Converter Works in Your Browser

Unlike conventional online conversion websites that upload your files to remote cloud servers, Lumino processes your media 100% client-side inside your browser sandbox using modern WebAssembly (WASM), WebGPU, and the HTML5 Canvas 2D API.

This means your sensitive photos, identity cards, passport scans, and proprietary design files are processed directly on your local device hardware (RAM/GPU) and are never transmitted across the internet.

Supported InputsJPG, PNG, WebP, SVG, BMP, TIFF, GIF, HEIC
Processing EngineWASM SIMD + Canvas 2D + WebGPU
Privacy & StorageZero Cloud Uploads • Memory-Only
Frequently Asked Questions

Everything You Need to Know

Clear answers on privacy, security, file limits, and image quality.

PNG uses lossless compression, making it ideal for graphics, diagrams, and text that require sharp edges.

Related Image Tools

Convertconvert

PNG to JPG Converter

Convert PNG images to JPG with custom background color for transparency.

100% In-BrowserPNG
Web Readyconvert

JPG to WebP Converter

Convert JPG images to next-gen WebP format for 30%+ smaller file sizes.

100% In-BrowserJPEG
All-in-Oneconvert

Image Format Converter

Universal converter to switch between JPG, PNG, WebP, BMP, and GIF formats.

100% In-BrowserJPEG, PNG, WEBP, BMP, GIF
Popularcompress

Image Compressor

Reduce image file size with lossless quality, exact KB target mode, and multi-file batch ZIP download.

100% In-BrowserJPEG, PNG, WEBP, BMP