Convert Image – JPG, PNG, WebP & AVIF Converter Free

Convert images between JPG, PNG, WebP and AVIF.

Choose images

JPG, PNG, WebP, GIF… — or drop them here

Your files stay on your device — nothing is uploaded.

Convert Image changes your pictures to the format you need — JPG, PNG, WebP or AVIF. Convert WebP to JPG, PNG to JPG or JPG to WebP in bulk, right in your browser with nothing uploaded.

How to convert an image

  1. Click "Choose images" or drag and drop your pictures into the box.
  2. Choose the format you want: JPG, PNG, WebP or AVIF.
  3. Set the quality for JPG, WebP and AVIF (90% is a good default).
  4. Click "Convert" and download one image or all as a ZIP.

Why use ZentaPDF Convert Image?

100% privateFiles are processed in your browser. Nothing is uploaded to any server.
Free, no sign-upNo account, no email, no watermark and no daily limits.
FastNo upload or download wait — results are ready in seconds.
Works everywhereUse it on Windows, Mac, Linux, Android or iPhone in any modern browser.
Keeps qualitySmart settings keep your images sharp.
Large filesHandle big files and many pages — limited only by your device’s memory.

Frequently asked questions

Are my files uploaded to a server?

No. ZentaPDF processes your files inside your own browser using JavaScript. Nothing is uploaded, so nobody else can see your documents — not even us.

Which format should I choose?

JPG works everywhere and is best for photos. PNG is lossless and keeps transparency — good for logos and screenshots. WebP and AVIF make much smaller files for websites.

How do I convert WebP to JPG?

Add your WebP files, choose JPG and click Convert. Transparent areas become white, because JPG does not support transparency.

Why is AVIF or WebP greyed out?

Some browsers (mainly older Safari versions) cannot create these formats. Open ZentaPDF in Chrome or Edge to use them.

Is it really free? Do you add a watermark?

Yes, it is completely free with no sign-up, no watermark and no daily limits. The site is supported by a few non-intrusive ads.

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