Bulk Image Converter
Convert multiple images (JPG, PNG, WebP, HEIC, AVIF) at once and download as a ZIP. Processed locally in your browser.
Batch Convert Images
Select multiple photos (JPG, PNG, WebP, HEIC, AVIF)
Max 50 files.
How to use the bulk image converter
- Click "Batch Convert Images" to select up to 50 photos from your device.
- Select your target format: JPG (best for general use), PNG (for transparency), or WebP (for websites).
- Click Convert and watch the progress bar as your browser processes the files locally.
- Download the final ZIP folder containing all your converted images.
Why convert in bulk?
Converting files one by one can take hours. ToolKB's batch converter uses your device's processing power to convert multiple images simultaneously without uploading anything. It's perfect for converting a folder of iPhone HEIC photos to JPG, or changing a batch of PNG screenshots into web-friendly WebP files.
Is my data uploaded to the cloud?
Absolutely not. This batch converter is a complete offline web app. When you select multiple photos, your web browser runs the conversion directly on your computer or phone, and builds the ZIP file locally. Nothing is ever sent to our servers.
Next steps
Need to process images individually? Try these tools: