How to Batch Convert Image Formats Online
Our free batch image format converter lets you change the format of multiple images at once — directly in your browser. Whether you need to convert JPG to WebP for faster web performance, PNG to JPG for smaller file sizes, or any other combination, this tool handles it all without uploading a single file to any server.
Simply drag and drop your images (or select a folder), choose your target format (JPG, PNG, WebP, AVIF, BMP, GIF, or ICO), adjust the quality slider for lossy formats, and click "Start Converting." All converted images are packaged into a ZIP file for easy download, or you can save them directly to a folder using Chrome or Edge.
Since all processing uses the HTML5 Canvas API in your browser, your images remain completely private. There are no file size limits, no watermarks added, and no registration required. This makes it perfect for photographers, designers, and web developers who need to batch convert images quickly and securely.
Supported Formats
Input: Any image format your browser can decode — JPG, PNG, WebP, BMP, GIF, AVIF, SVG, ICO, TIFF, and more.
Output: JPG (JPEG), PNG, WebP, AVIF, BMP, GIF, ICO (256×256). For lossy formats (JPG, WebP, AVIF), you can control the output quality from 1% to 100%.
Frequently Asked Questions
What image formats can I convert between?
You can convert between JPG (JPEG), PNG, WebP, AVIF, BMP, GIF, and ICO formats. The tool accepts any format your browser can decode as input, including SVG and TIFF.
Is my data safe when converting images?
Yes, all image processing happens entirely in your browser using the Canvas API. No images are ever uploaded to any server. Your files remain 100% private and secure.
How many images can I convert at once?
There is no fixed limit. You can convert as many images as your browser can handle. All converted files are packaged into a ZIP download or can be saved directly to a folder using Chrome or Edge's File System Access API.
What is the difference between lossy and lossless formats?
Lossy formats (JPG, WebP, AVIF) compress images by discarding some data, resulting in smaller files but slight quality loss. Lossless formats (PNG, BMP, GIF) preserve all image data exactly. Use the quality slider to control the compression level for lossy formats.
Why should I convert images to WebP or AVIF?
WebP and AVIF are modern image formats that offer significantly better compression than JPG and PNG, resulting in smaller file sizes with comparable quality. This means faster web page loading times and lower bandwidth usage — crucial for web performance and SEO.