Image Format Converter
Drag & Drop images here (JPG, PNG, WEBP)
The Ultimate Guide to Image Format Conversion
The Adiminium Image Converter is a versatile and private utility designed to transform your visual assets from one file type to another. Whether you are a web developer speeding up a site with WebP, a photographer needing high-quality PNGs, or just trying to open a stubborn file, this browser-based tool handles it all locally without ever uploading your personal photos to a server.
Supported Formats Explained
Understanding which format to use is key to digital image management:
- JPEG (.jpg): The standard for photos. Uses "Lossy" compression. Good for real-world images with millions of colors. not good for text or sharp lines.
- PNG (.png): The standard for transparent graphics (logos, icons). Uses "Lossless" compression. Crisp quality but larger file sizes.
- WebP (.webp): Google's modern format. Supports both transparency (like PNG) and high compression (like JPG). Supported by all modern browsers.
- GIF (.gif): An older format limited to 256 colors. Best used only for simple animations. For static images, use PNG instead.
- BMP (.bmp): An ancient, uncompressed format. Huge file sizes. Only use if specifically required by legacy software.
- ICO (.ico): Specifically for "Favicons" (the tiny icon in browser tabs).
Why Convert Locally?
Most online converters require you to upload your files to a cloud server. This means (1) Waiting for
uploads, (2) Trusting them with your data, and (3) Waiting for downloads.
Adiminium uses the power of your own computer (CPU/GPU) to convert the files instantly in the browser.
It's faster, safer, and works even without internet!
Step-by-Step Guide
- Upload: Drag multiple images into the drop zone. We support batch processing!
- Choose Output: typically, select JPG for photos or PNG for graphics.
- Convert: Click "Convert All".
- Download: Files will download individually, or as a handy ZIP archive if you converted many at once.
Frequently Asked Questions
What about HEIC (iPhone) photos?
If your browser (like Safari or latest Chrome) supports reading HEIC natively, we can convert them to JPG. If not, the browser might block the file.
Does quality decrease?
Converting to a "Lossy" format like JPEG always removes some data to save space. We use a high quality setting (92%) which is virtually indistinguishable from the original.
Can I convert a transparent PNG to JPG?
Yes, but since JPEG does not support transparency, the see-through background will be replaced with White (or sometimes Black, depending on browser defaults).