Why it's a strong pick

Simple Image Converter does one job and does it where you find the image: on the page. It is open source under the MIT license, and its code is public on GitHub. It uses Manifest V3, Chrome's current extension format. The repo's latest release commit is dated 16 September 2026.

What it does

Right-click any image and save it, or copy it, as PNG or JPEG. The README says it was made for WebP and AVIF images that other tools do not accept. You can pick lossless PNG, or JPEG with a quality setting you choose.

Key features

Right-click convert. Save or copy an image as PNG or JPEG.
Clipboard copy. Paste the converted image straight into another app.
JPEG quality. Set how much quality to keep.
Smart filenames. Files take the website's name, not the CDN's long code.
Dark mode. Plus English, German and Hungarian.

Who it's for

It is for anyone who keeps saving WebP or AVIF images that Word, upload forms or older tools reject. If you only need to look at a photo's hidden details, see Photo EXIF Util or EXIF Metadata Viewer instead.

What permissions does Simple Image Converter ask for?

Its manifest asks for contextMenus, downloads, clipboardWrite, storage, scripting and offscreen. It also asks for access to all sites, and it runs a small helper script on every page. The all-sites access is how it fetches the image you right-click. That is broad for a right-click tool, so read the install prompt.

Does it send my images anywhere?

Its README says "100% offline, no data collection", and it links a privacy policy. That is the developer's own statement, not an audit by us. The README does not say more than that, so read the linked policy if you need the detail.

Is Simple Image Converter free?

The README mentions voluntary donations, and its contributing line uses the words "free edition". We could not confirm whether a paid edition exists. Check the Chrome Web Store listing before you install, and read the README yourself, so you know what you are getting before you add the extension.

Can it save images as WebP or AVIF?

No. The README says it outputs PNG or JPEG only. It converts from WebP and AVIF, but it does not make them. If you need a WebP file, this is the wrong tool. If your source image is WebP or AVIF and you want PNG or JPEG, it fits.

FAQ

Which formats can I get? PNG and JPEG.

Does it work on any site? It asks for access to all sites, so it can reach any image you right-click.

Is it open source? Yes, under the MIT license.

Good to know

Use PNG when you want no quality loss, and JPEG when a smaller file matters. JPEG has no transparency, so a PNG with a see-through background will lose it. Test one image before you convert a batch.

Other image tools to compare

Simple Image Converter is one of 3 picks in our image tools guide:

Photo EXIF Util: See the EXIF data in JPEG, PNG and WebP photos and strip it before you share. Open source. A young 0.x project.
EXIF Metadata Viewer: Right-click an image to see camera details, date and GPS location. View only.