Batch Image Converter
Convert single files, folders, or full directories to WebP, PNG, JPG, and BMP offline.
100% Offline (Processes in browser WASM thread)
Drag & drop files or folder structures here
or choose from the controls below:
Files Queue (0)
| File Name | Subfolder Path | Size | Status | Actions |
|---|---|---|---|---|
| No files selected in queue. | ||||
User Guide: Client-Side Batch Image Conversions
What makes this converter unique?
Most converters require sending files to remote servers, which limits file sizes and poses a privacy risk. Our utility operates entirely inside your browser thread. By combining high-speed native canvas elements with WebAssembly modules, your original files are converted locally on your machine.
How Folder Tree conversions work
When you drop a folder or directory structure containing sub-folders, our parser dynamically traces and matches the relative directory path. The compiled ZIP file keeps the identical layout, replacing only the file extensions as desired.
Decoders and WebAssembly Features
- HEIC / HEIF support: Decodes Apple iPhone formats client-side using standard WebAssembly.
- Direct Converter: High-fidelity local formatting without image compression artifacting.
- Offline Compatible: After initial page load, this tool can run fully disconnected without internet.