Bulk Image Converter
Image & design · Done in 3 steps
- 1Add your images
- 2
- 3
About
Convert hundreds of images to JPG, PNG, WebP or AVIF in one go, rename them with a pattern and download a single ZIP. Runs locally.
How to use it
- 1Select or drop up to 500 images of any common format.
- 2Pick the output format and quality.
- 3Optionally set a filename pattern.
- 4Click Convert all and download the ZIP.
- You give
- Up to 500 JPG, PNG, WebP, AVIF, GIF, BMP or SVG images
- You get
- A ZIP of converted images
- Good to know
- AVIF output depends on browser support (the tool checks and warns). JPG output flattens transparency onto your chosen colour. Animated GIFs keep their first frame.
- Privacy
- Processed on your device. Nothing is uploaded, stored or logged.
- Last tested
- 2026-10-28
FAQ
Can I mix input formats?
Yes. Drop PNGs, JPGs and WebPs together — every file is converted to the single format you choose.
Is there a size limit?
No fixed limit, but everything happens in your browser's memory. A few hundred typical photos is fine on a laptop.
Will my files keep their names?
By default yes, with the new extension. Use the filename pattern to add numbers, dates or sizes.
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