Изображения
Открываем AVIF и сохраняем в привычный JPG, PNG или WebP. Можно выбрать сразу несколько файлов. Всё считает браузер, изображения не загружаются на сервер.
JPG не хранит прозрачность: прозрачные области заливаются белым. Если фон должен остаться прозрачным, выбирайте PNG или WebP.
Tool guide
AVIF is the modern format sites serve instead of JPEG because it is roughly half the size at the same quality. The trouble starts after downloading: older Windows builds, editors, office suites and document upload forms refuse to open it and ask for a normal picture. This tool decodes AVIF with the browser itself and re-saves it as JPG, PNG or WebP. Several files can be handled at once and optionally scaled down by their long side. Nothing is uploaded. See also: open iPhone HEIC photos as JPG, re-encode the JPG as WebP for the web, squeeze the photo down to a target KB size.
Any modern browser: Chrome, Edge, Firefox and Safari 16 and newer display AVIF without add-ons. The problem is rarely viewing but applications — older editors and office suites do not know the format. Re-saving once as JPG is simpler than hunting for a plugin for every program.
A little: AVIF is lossy and JPG compresses the result again. At 90% quality the difference is hard to see on a photograph. Re-compression shows up most on flat illustrations and screenshots with hard edges, where PNG is the better choice.
That is expected: AVIF is roughly twice as efficient as JPEG at the same quality, so the file naturally grows when re-saved. If size matters, choose WebP — it is closer to AVIF in efficiency and still opens almost everywhere.
Yes, the field accepts multiple files and processes them one after another. If a file fails to open, the tool names it and carries on with the rest instead of stopping at the first error. Each result gets its own download link under its preview.
AVIF can store transparency and JPG cannot. When JPG is selected, transparent areas are filled with white, since otherwise they would turn black. Choose PNG or WebP to keep transparency.
No. The image is decoded by the browser, redrawn on a canvas and re-encoded by the same browser. Not one byte is sent over the network, which you can verify in the Network tab of developer tools.
Before: hero-image.avif, 320 KB
After: hero-image.jpg at 90% quality — opens everywhere
Before: 12 AVIF files from an archive
After: 12 JPG files capped at 1600 px on the long side
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