You saved an image from the web or pulled a few shots off an Android phone, the file ends in .avif, and Windows just stares back at you. Double-click it and the Photos app may throw an error, or Explorer shows a generic icon with no thumbnail. Nothing is wrong with your file. AVIF is simply a newer format that a clean Windows install does not read out of the box. Below are the free methods that actually work, from a one-click system extension to a proper photo library that treats AVIF like any other picture.
What is an AVIF file, and why won't it open?
AVIF stands for AV1 Image File Format. It is built on the AV1 video codec, the same technology behind a lot of modern streaming, and it packs impressive image quality into a very small file. That efficiency is why websites, Android phones, and a growing number of apps now hand you AVIF instead of JPEG.
Windows was built before AVIF became common, so the decoder that turns those compressed bytes into a visible picture is not installed by default. Your file is perfectly valid. What your PC lacks is the small piece of software that knows how to read it. Add that piece once and AVIF behaves like any ordinary photo.
Method 1: Add AVIF support to the Windows Photos app
Microsoft offers a free extension that teaches the built-in Photos app and File Explorer to read AVIF. Open the Microsoft Store, search for the AV1 Video Extension, and install it. On some builds you may also want the HEIF Image Extensions, which travel in the same family of modern formats.
Once it installs, close and reopen Explorer. Thumbnails should appear, and a double-click will open the image straight in Photos with no error. For most people who only need to glance at an AVIF now and then, a single install is the whole job. Restarting the machine helps if thumbnails are slow to refresh.
Method 2: Use a free image viewer that already reads AVIF
Prefer not to touch the Store? Several free viewers decode AVIF on their own. IrfanView and XnView MP both open the format once their small plugin packs are present, and GIMP reads AVIF if you want to edit rather than just look. Even your browser works in a pinch: drag the file onto a Chrome or Edge tab and it renders instantly, because those browsers ship their own AV1 decoder.
A dedicated viewer is handy when you deal with AVIF often and want quick next-image navigation, zoom, and basic conversion in one window. Pick whichever one you already trust, since they all land at the same result.
Method 3: Convert the AVIF to JPEG or PNG
Sometimes you do not need to keep the AVIF at all. You just need a copy a colleague, a printer, or an older program can accept. In that case, convert it. Open the AVIF in any tool from the methods above, choose Save As or Export, and pick JPEG for photos or PNG when you want crisp edges and transparency.
Converting does trade away some of AVIF's size advantage, and a JPEG re-save is lossy, so keep the original if the image matters. For a one-off share, though, a quick export is the path of least resistance.
Opening AVIF inside a real photo library
Viewers and extensions solve the "let me see this one file" problem. They do nothing for the pile of mixed JPEGs, RAWs, HEICs, and AVIFs scattered across your drives. That is where a photo organizer earns its keep. Memora reads AVIF through its embedded preview alongside JPEG, PNG, TIFF, WebP, BMP, HEIC, HEIF, and the common RAW formats, so a folder full of different file types shows up as one clean, scrollable library.
Point Memora at a folder and it indexes those pictures in place, never moving or altering your originals. From there you can browse everything together, run a local AI text search to find a shot by describing it, and group or filter the results. When you want an AVIF in a more universal shape, export it to JPEG, PNG, TIFF, WebP, or BMP with the EXIF date, camera, and copyright carried over. One honest limit is worth stating plainly: Memora reads AVIF and exports out of it, but it does not write new AVIF files, so treat it as an organizer and viewer rather than an AVIF converter. If you are tired of a messy folder sprawl, a proper photo organizing tool matters far more than any single-file viewer.
A note on privacy when opening photos
Dragging an image into a browser tab is convenient, but with some web-based converters your picture travels to a stranger's server to be processed. For a holiday snap that may be fine. For anything personal, a family face, a document, a private moment, it is worth choosing tools that keep the work on your own machine.
Everything Memora does, the indexing, the preview rendering, the AI search, the exports, runs entirely on your PC. Your photos are never uploaded, and there is no analytics or tracking baked in. To be upfront about the connections it does make: the app contacts shutterdev.com only to check your license and for updates, it fetches a camera color profile by sending just the make and model string when it meets a new RAW camera, and AI models download once from their source. None of your images, thumbnails, or metadata ever leave the device.
Frequently asked questions
Can Windows 11 open AVIF without extra software? Not reliably. A fresh install usually cannot, which is why the AV1 Video Extension from Method 1 exists. After that install, the native Photos app handles AVIF cleanly.
Is AVIF better than JPEG? For the same visual quality, AVIF files are typically much smaller, and the format supports transparency and wider color. The catch is compatibility, since older apps still expect JPEG, which is exactly the headache this guide addresses.
Will I lose quality converting AVIF to JPEG? A JPEG is lossy, so a conversion discards some data. For sharing it rarely shows. If the image is important, keep the AVIF original and treat the JPEG as a disposable copy.
What does it cost to view AVIF in Memora? Browsing and viewing your library, including AVIF previews, and basic AI text search are part of the free tier. Memora runs on Windows 10 and 11. See the pricing page for what the Pro features add.