AVIF to PNG Converter

What Makes This AVIF-to-PNG Converter Different

Most image converters upload your files to a remote server, process them there, and send the results back. This page does none of that. Every conversion from AVIF to PNG happens locally in your own browser, using the device’s own processing power. Nothing leaves your machine. That difference matters for privacy, speed, and offline capability—but it also forces a technical constraint that many other tools gloss over: the browser must be able to decode AVIF files, but it does not need to be able to encode them in AVIF. Since this tool never writes AVIF, universal browser incompatibility with AVIF encoding is irrelevant. The output is always PNG, a format every browser can produce natively.

The tool reads AVIF images only — no other input format is accepted on this page — and writes PNG files. It handles alpha channels, wide colour gamut, and HDR data that AVIF supports—whatever the source contains. An animated AVIF converts to a static PNG of its first frame. The conversion is lossless by design. There is no quality slider, no compression level choice; the page shows a short hint that PNG is lossless instead. PNG output is always pixel-identical to the original decoded image, at the cost of a significantly larger file for photographs.

How the Conversion Works

When you select one or more AVIF files (or drag them onto the page), the browser decodes each image into pixels using its built-in AVIF decoder. The decoded image—including its colour profile and alpha channel—is then re-encoded as a PNG file right on the device. PNG uses DEFLATE compression, which is lossless and respects the original pixel data exactly.

Files are processed one at a time, in the order you selected them, while a status line shows which file is being converted. No data is sent over the network at any stage. The tool reports the original file size (in bytes) from the input file, then after conversion reads the PNG’s file size. If the PNG is smaller than the AVIF (rare for photos, possible for solid-colour graphics or screenshots that compress well with DEFLATE), a label “Saved” appears. If the PNG is larger, the label reads “Larger”. The difference is not a measure of quality—it is a measure of file size. Both images are identical in pixels.

Browser Fallback for AVIF Encoding

As noted, this page never encodes to AVIF. However, some browsers also have limited support for reading AVIF. This is uncommon among modern browsers (Chrome, Edge, Opera, and Firefox all support AVIF decoding as of 2025), but older versions or certain configurations may fail to open an AVIF file. When the decoder cannot produce a valid image, the tool shows the error: “This file could not be opened as an image. It may be corrupted, empty, or not actually an image.” That message covers both genuine file corruption and browser-level decoding failures.

One label that exists on the JPG- and WebP-output sibling pages — “Your browser doesn’t support saving this format — used PNG instead” — never appears here. It marks the case where a browser cannot write the requested format and the tool saves PNG as a substitute; on this page the requested format is always PNG, which every browser can write.

AVIF and PNG Format Fundamentals

AVIF uses the AV1 video codec for still-image compression, achieving roughly 50% smaller files than JPEG at the same subjective quality. It also supports alpha channels and 10/12-bit colour for HDR. PNG, by contrast, is a lossless format designed for the web in the 1990s. Its DEFLATE compression is most effective on images with large uniform areas (logos, diagrams, screenshots) and least effective on photographic noise. Converting a 1 MB AVIF photo (lossy, high quality) to PNG often produces a 5–10 MB file—identical pixels, but no compression tricks from AV1.

The lossless nature of PNG is both a strength and a weakness. For archival or editing workflows where you must avoid generational loss, PNG guarantees every pixel survives re-saves. For everyday sharing, AVIF to PNG is wasteful. This tool exists exactly for those compatibility- or transparency-driven scenarios.

When to Convert AVIF to PNG

You would use this converter specifically when:

• You need universal transparency. AVIF supports alpha, but many image editors, operating system file managers, and older software do not. PNG is the lingua franca for transparency on the web and in desktop publishing.
• You need lossless storage. AVIF can be lossless too (using the lossless AV1 profile), but browser support for lossless AVIF decoding is less reliable. PNG guarantees pixel-perfect output without any quality slider debate.
• You are sharing with someone who cannot open AVIF. Even though modern browsers decode AVIF, not all image viewers (e.g., Windows Photos on older builds, iOS Photos before iOS 16) support it. Sending PNG avoids the “what’s this file?” problem.
• You want to keep your files private. No upload means no copy of your image exists on a third-party server. For sensitive screenshots, design assets, or personal photos processed in-house, this is a clean workflow.
• You need to batch-convert multiple AVIF files to PNG. The tool allows selecting up to 20 files at once, processes them all locally, and gives you a single ZIP download with all converted images.

Output Details: Downloads, File Sizes, and ZIP Bundles

After conversion, each image is displayed with:

• The original filename (with .avif replaced by .png in the output)
• Image dimensions (width × height, in pixels)
• Original file size (formatted in KB or MB)
• Converted file size (formatted)
• A label: “Saved” if the PNG is smaller than the AVIF, “Larger” if it is bigger

Below the list of individual images, a summary line shows: Total: ‹original size› -> ‹converted size›. If two or more images are converted, a “Download all (.zip)” button appears. Clicking it creates the ZIP right in the browser: a single archive named brobrogo-converted.zip with every PNG at the top level, each keeping its original base name. Each individual image also has its own download button.

You can select up to 20 images at a time; adding more shows the error “Choose up to ‹max› images at a time.” There is no per-file size limit — the practical ceiling is what the device can hold in memory.

Edge Cases and Error Handling

Per-file failures are shown next to the affected file in the results list; selection errors (wrong type, too many files) appear in the status line. The tool does not stop processing other successfully converted images unless the error is a global one (like exceeding the file count limit).

FAQ

1. Will the conversion degrade image quality?
No. PNG is lossless. Every pixel, including alpha transparency, is preserved exactly as decoded from the AVIF source. If the AVIF itself was lossy, the decoded version already contains the compression artifacts—converting to PNG cannot remove them, but it also cannot add new ones.

2. Why is my AVIF photo so much larger after conversion?
AVIF uses the advanced AV1 video codec, which achieves much higher compression than DEFLATE. A typical 1 MB AVIF photo may become 5–8 MB as PNG. That is normal. The only way to avoid it is to convert to a lossy format like JPEG, but this page only outputs PNG.

3. Can I convert multiple AVIF files at once?
Yes. Select up to 20 files and they are converted one after another. You can download them individually or as a single ZIP archive.

4. Does this tool work offline?
If the page is fully loaded in your browser (including all scripts), you can disconnect from the internet and still use it. No server round-trips are required.

5. What if my browser doesn’t support AVIF?
All major browsers (Chrome, Firefox, Safari, Edge) have supported AVIF decoding since 2022–2023. If you are on a very old browser, the tool will show the “could not be opened” error. In that case, you cannot convert AVIF files until you update your browser or switch to a compatible one.

6. Does the tool preserve colour profiles from AVIF?
AVIF supports ICC profiles and wide colour gamut. The conversion maps the colour data to standard sRGB for the PNG output. If your AVIF contains HDR (10-bit, PQ transfer), that information is lost during conversion because the PNG is written as 8-bit sRGB. For standard SDR images, colour should look identical.