Toolstia / Batch image converter
Convert many images at once
Changing a whole folder of pictures one by one is tedious. Drop up to 30 images here, choose a format and quality once, and every file is converted in your browser.
Drop images here, or click to choose
image images, up to 30 at a time. Nothing is uploaded.
The converted file is rebuilt from the pixels, so photo metadata such as GPS is not carried over.
How it works
- Drop all your images together.
- Choose the output format and quality.
- Download the converted files.
Mixed input
You can mix JPG, PNG, WebP and, where your browser supports them, AVIF and HEIC files in one batch.
Choosing a format
JPG suits photos and works everywhere. PNG keeps transparency and sharp edges. WebP gives small files for websites.
Size report
Each result shows the size before and after so you can see whether the conversion actually saved space.
Private
Pictures are never uploaded, so it is safe to use for personal or work photos.
Questions
Is there a limit?
Up to 30 images per batch. Run it again for more.
Can I get a ZIP?
Not yet. Files are downloaded individually.
Is anything uploaded?
No. Your images stays in your browser and is never sent anywhere.