Image Converter is a lightweight Windows desktop app for converting and resizing images in bulk. Drop in a mix of formats — everyday photos, phone HEICs, or RAW files straight off a camera — and it exports clean, optimized JPEG, PNG, or WebP files, with full control over quality and dimensions.
Converted files are saved to a converted folder right next to your originals, so nothing gets overwritten.

Key capabilities

• Wide format support — Reads PNG, JPG/JPEG, BMP, TIFF, WebP, HEIC/HEIF, and camera RAW files (Nikon NEF/NRW, Canon CR2/CR3/CRW, Sony ARW/SR2, Adobe DNG, Olympus ORF, Panasonic RW2, Fujifilm RAF, Pentax PEF, and more).
• Export to JPEG, PNG, or WebP with an adjustable quality slider (1–100).
• Flexible resizing — Scale down by a fraction (½ up to 1/20), or set an independent max width and max height. Images always keep their aspect ratio and are only ever scaled down, so a mixed batch of landscapes and portraits each fit neatly within your limits.
• True batch processing — Convert an entire set at once; images process one-by-one with live progress, so you can watch the queue clear.
• High-quality RAW handling — Full-resolution demosaic with camera white balance for accurate color from RAW.
• Modern, responsive interface — Drag-and-drop or browse to add files, a responsive masonry thumbnail grid that adapts to your window size, and a clean dark theme.

Using it

1. Launch the app.
2. Drag images onto the drop zone (or click Add Images to browse).
3. Choose your output format, quality, and optional resize / max width & height.
4. Click Convert Images — your files land in a new converted folder beside the originals.