About FormatFlash
A free, privacy-first image converter that runs entirely in your browser.
What is FormatFlash?
FormatFlash is a free online image converter for HEIC, JPG, PNG, and WebP files. It is built for people who need a quick format change without installing software, creating an account, or handing their photos over to a server. Everything runs client-side, so the tool works the moment the page loads.
Privacy by design
Privacy is not an afterthought here — it is the core of how FormatFlash works. Your images are decoded and re-encoded locally using the browser's Canvas API and the open-source heic2any library. Your files are never transmitted, stored, or inspected on a server. When you close the tab, nothing is left behind.
Supported formats
You can convert from HEIC, HEIF, JPG, JPEG, PNG, WebP, GIF, and BMP. Output is available as JPG, PNG, or WebP, which covers the most common needs for the web, email, and social media.
Who is it for?
FormatFlash is for anyone who receives an iPhone photo in HEIC and needs a JPG, for developers who want a WebP version of an image, or for anyone who simply wants a fast conversion without uploading private pictures to an unknown service.