Which format is best for websites?

100% Client-Side • Zero Cloud Uploads

Image Format Converter

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

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

Upload Any Image

Select any JPG, PNG, WebP, BMP, or GIF file.

Select Target Format

Choose your desired export format (JPEG, PNG, WebP, BMP).

Download Converted File

Get your newly formatted image instantly.

Key Capabilities

Why use Image Toolkit?

Universal Conversion

Converts seamlessly across all mainstream web and graphic formats.

Technical Specifications

How Image Format 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