Drop a file here or click to choose
Your file stays on your device. Processing happens locally in your browser.
What is Batch Image Converter?
Batch Image Converter turns a whole set of pictures into JPG, PNG, WebP, AVIF or BMP in one go. Add HEIC photos from a phone, PNG screenshots or WebP downloads, reorder or remove them in the queue, set the quality and an optional size limit, then download each file or one ZIP. Files are processed a few at a time so the browser doesn't run out of memory, and nothing is uploaded.
Key features
- Queue with reorder and remove
- Output: JPG, PNG, WebP, AVIF or BMP
- Quality and optional longest-side limit
- Per-file downloads and one ZIP made on your device
- A file that can't be read is skipped and reported
- Up to 20 files per batch free; fewer on low-memory devices
- Runs in your browser — nothing is uploaded
Popular uses
- Convert a folder of iPhone HEIC photos to JPG
- Turn website images into WebP or AVIF in one step
- Prepare a set of product photos in one format
Supported formats
Input: JPG, PNG, WebP, AVIF, HEIC/HEIF, GIF, BMP, TIFF. Output: JPG, PNG, WebP, AVIF, BMP.
Troubleshooting
- Only some of my files were added The batch has a limit (20 on the free plan, lower on phones). Run the rest as a second batch.
- One file shows an error It couldn't be decoded — it may be damaged or not really an image. The other files are unaffected.
- AVIF batches are slow AVIF encoding is heavy and runs on your processor. WebP converts much faster.
Also known as: Bulk Image Converter, Convert Multiple Images, Batch HEIC to JPG, Bulk WebP Converter.
How it works
- Add images (HEIC, JPG, PNG, WebP, AVIF, GIF, BMP, TIFF) — reorder or remove them in the queue.
- Choose the output format, quality and an optional longest-side limit.
- Convert, then download files one by one or all together as a ZIP built on your device.
FAQ
How many files can I convert?
Up to 20 per batch on the free plan. Phones and low-memory devices get a smaller limit so the browser doesn't run out of memory.
What if one file fails?
It is marked in the queue with the reason and skipped; the other files finish.
Are animated GIFs converted?
Only if you agree to keep the first frame — animations are never silently flattened.
Are my images uploaded?
No. Everything, including the ZIP, is made in your browser.
Can I cancel halfway?
Yes. Cancel stops the whole batch straight away and frees the memory it used; your queue stays, so you can run it again.