Opening APNG Files

The APNG file type is primarily associated with Web browsers, image viewers, and some image editing software.

APNG	File extension: APNG
	File type:	Animated image files

What is an APNG file?

APNG files mostly belong to Web browsers, image viewers, and some image editing software. An APNG file is a type of animated image file that uses the PNG (Portable Network Graphics) file format. It extends the standard PNG format to support animation, similar to how an animated GIF works. APNG files can support both 24-bit images and 8-bit transparency, unlike GIFs, which are limited to 8-bit color and 1-bit transparency. This allows for higher quality images and smoother animations. APNG files also support delta frames, which store only the changes between frames, resulting in smaller file sizes compared to storing each frame as a complete image. While not as widely supported as GIFs, APNG is gaining popularity, especially in web browsers and applications that prioritize image quality and performance.

How can I open an APNG file?

You need a suitable software like Web browsers, image viewers, and some image editing software to open an APNG file. You need a suitable software like Web browsers, image viewers, and some image editing software to open an APNG file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your APNG file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a APNG file directly in the browser:. Just drag the file onto this browser window and drop it.

Online APNG File Viewer

Choose your .apng file to play

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

How to convert APNG files to JPG, PDF, HTML, DOC, ...

1. To do so, click the "Choose your .apng file to play" button above.
2. Your APNG file will then be displayed in the browser.
3. Now click on "Save as..." at the top of the page.
4. Then click the file format (e.g. PDF, JPG, DOCX, TXT, ...) you want.
5. Your file will be converted and downloaded.

.APNG File Not Opening? How to Fix It:

Because .APNG files come from various animation tools, they aren't universally openable by all basic photo viewers.

1. Identify the Source: Files from web designers building sites or animators exporting graphics are usually Animated PNGs, suggesting a modern web browser.
2. Check the Header: Open the file in a hex viewer to inspect its first bytes.
   • 89 50 4E 47 (PNG magic bytes) indicates a standard image structure.
   • An acTL text chunk confirms it contains animation frames.
3. Use the Original Software: The original program is usually required; try Mozilla Firefox, Google Chrome, XnView, or GIMP, and ask the sender if uncertain.
4. Use this Webpage: Drag and drop your file onto this page to detect the format, extract metadata, and preview the animation when possible.

APNG file format:

To view or edit APNG files you need to know the file format, because it determines how the data in this file is stored. A file format is determined by the file extension and signature, so JPEG images have the extension .jpg and the first bytes in the file are ÿØÿ. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. When there is a problem with a file, the first step to solving it is to determine the file format. Below you will find our evaluation of the APNG files:

APNG is not a common file extension and is primarily used by a single program. The two most popular formats are as follows:

• 95% of all APNG files are Animated Portable Network Graphics files, which are using the popular PNG file format. PNG is short for Portable Network Graphics. It is a high-quality raster image file that supports lossless data compression. If you open these files in a text editor, you will see only illegible characters. The files are often between 6 KB and 43 MB in size. This file type is based on cutting-edge technology. Certain words are almost always found in the files, such as IHDR, acTL, fcTL, IDATx and pHYs. ch21.apng is a typical file name. Files like these are about convert, logo, vertopal, animated, medieval, madness, sample, glass and demo.

All other APNG files (5%) have no uniform format. Drag & drop your file here to see the file format and a preview of your APNG file!