Image Format Converter by Berta

by Rondanini Publishing Ltd · rondanini.com · Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Convert images locally — PNG, JPEG, WebP, AVIF. Private, free, no account. By Berta.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#297K

#243K among extensions

Version

0.1.3

updated 8 May 2026

Users

monthly, 5 months

Latest, 16 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Image Format Converter by Berta

Image Format Converter by Berta turns your pictures into PNG, JPEG, WebP, or AVIF — entirely on your computer. Pick a file from the toolbar popup or open the full window for batch conversion. No upload, no account, no cloud. What you get - Toolbar popup: drag an image or browse, choose output format and quality, save with the system “Save as” dialog - Full window: queue multiple images and download converted files into your Downloads folder in one go - Remembers your last format and quality via chrome.storage.local (optional) - Dark / light appearance follows your system theme - Marketing site and privacy details: ifc.berta.one What you do not get - No analytics, telemetry, or ads - No third-party SDKs - No reading or changing websites you visit (no host permissions) Permissions - "storage" — save your preferred output format and quality between sessions - "downloads" — deliver converted files when you save or batch download The extension does not declare host permissions and cannot access web page content. Privacy Your images are processed with the browser Canvas API and are never sent to us. The extension issues no HTTP requests for conversion. See your privacy policy URL for the full statement. Built by Berta, the technology arm of Rondanini Publishing Ltd.