Convert images to PNG, JPG, WebP or AVIF — 100% local, nothing uploaded to any server.
Each image up to 30 megapixels (files up to 100 MB). Conversion runs in the background — this tab stays responsive.
Drop your images here
or click to browse — PNG, JPG, WebP, AVIF, GIF, BMP, TIFF
100% Private
Files never leave your device
Instant
Conversion happens in your browser
Batch
Convert multiple files at once
Image Converter is a free online tool that converts images between PNG, JPG, WebP, and AVIF entirely in your browser — nothing is ever uploaded to a server. Drop in one or many images, pick your target format and quality, and download the results instantly, with a live before/after size comparison for every file. Conversion runs in a background Web Worker so the page stays responsive even on large batches.
Is Image Converter free to use?
Yes, it's completely free with no signup required.
Are my images uploaded anywhere?
No. Every conversion happens locally in your browser, in a background Web Worker — your files never leave your device.
Which formats are supported?
You can upload PNG, JPG, WebP, AVIF, GIF, BMP, or TIFF images, and convert them to WebP, PNG, JPG, or AVIF.
Can I convert several images at once?
Yes, you can add multiple files and convert them all in one batch, then download them individually or together.
Is there an image-size limit?
Yes: each image can be up to 30 megapixels on desktop (12 on phones and tablets), measured against how long large images take to encode in the browser — WebP in particular gets dramatically slower past a certain size. There's no limit on how many images you can batch-convert, since they're processed one at a time.