Finally a truly free unlimited converter! Convert unlimited images online – 100% free, no sign-up required
Menu
CZ | EN
Date published: March 22, 2026
Last update: March 22, 2026
Author: Marek Hovorka
Category: Image Conversion Guides
Tags: avif image converter, convert png to avif, Image optimization, png to avif, transparent image format
Learn when it makes sense to convert PNG to AVIF, how quality and transparency are affected, and the fastest workflow to create smaller web-ready images with PixConverter.
PNG is one of the most useful image formats on the web, but it often comes with a familiar problem: large file sizes. If you work with screenshots, graphics, UI elements, logos, or transparent assets, PNG can keep edges clean and backgrounds transparent, yet the files can become much heavier than they need to be.
That is where AVIF enters the picture. If your goal is to convert PNG to AVIF, you are probably trying to reduce image weight without making transparent images look broken or blurry. In many cases, that is exactly what AVIF can help with.
This guide explains when PNG to AVIF conversion is a smart move, what changes during conversion, how transparency is handled, what quality tradeoffs to expect, and how to get better results with an online tool like PixConverter.
If you want the fast version, here it is: AVIF can often shrink PNG files dramatically while still supporting transparency and strong visual quality. But it is not automatically the best choice for every image. The details matter.
Quick action: Ready to try it now?
Use PixConverter to convert PNG to AVIF online and create smaller images for websites, apps, and faster uploads.
The main reason is file size reduction.
PNG uses lossless compression. That is great for preserving exact pixel data, but it is not always efficient for web delivery. AVIF is a newer image format designed for better compression efficiency, which means it can often produce much smaller files at similar visual quality.
That makes PNG to AVIF especially attractive when you are dealing with:
For site owners, developers, designers, and marketers, smaller files can lead to practical benefits:
| Feature | PNG | AVIF |
|---|---|---|
| Compression type | Lossless | Lossy or lossless |
| File size | Often large | Usually much smaller |
| Transparency support | Yes | Yes |
| Best for | Editing, exact pixel retention, graphics | Web delivery, optimization, smaller assets |
| Browser support | Very broad | Modern and growing |
| Photo efficiency | Weak compared with newer formats | Very strong |
| Graphics with flat color | Good | Often very good when exported well |
| Ideal use case | Master file or compatibility-safe asset | Web-ready optimized image |
The key point is simple: PNG is often better as a source or editing format, while AVIF is often better as a delivery format.
Yes. AVIF supports alpha transparency, which is one of the main reasons people convert PNG files into it.
This matters because one of PNG’s biggest strengths is transparent backgrounds. If you are working with logos, icons, cutout product images, badges, interface elements, or design overlays, you usually do not want to lose that transparency just to save file size.
AVIF gives you a modern format that can preserve transparency while often reducing the file size significantly.
That said, the visual result still depends on the source file and conversion settings. Thin edges, shadows, anti-aliased lines, and subtle glows should be checked after conversion, especially if you use stronger compression.
If your site uses PNG graphics heavily, AVIF can reduce image payload and improve page speed. This is one of the strongest use cases.
For hero graphics, product callouts, banners, icons, and decorative transparent elements, a smaller image can improve rendering speed and reduce the cost of loading the page on mobile data.
Many PNGs are larger than people expect, especially exported screenshots, layered design assets, and images saved from editing software with conservative defaults. Converting them to AVIF can be an efficient way to cut size without visibly harming quality.
JPG does not support transparency, so it is not a direct replacement for many PNG use cases. AVIF is a much better option when transparent backgrounds need to stay intact.
AVIF support is solid across modern platforms. If your audience uses up-to-date browsers, AVIF is increasingly practical as part of a modern image workflow.
PNG to AVIF is useful, but it is not universal. Keep PNG if any of the following applies:
A simple rule helps here: keep PNG as your source if needed, and use AVIF as your optimized output for delivery.
This depends on whether the AVIF export is lossless or lossy.
Lossless AVIF can preserve image data more faithfully, but the file may not shrink as aggressively as a lossy version. Lossy AVIF usually delivers much smaller files, and in many real-world cases the visual difference is minor or hard to notice at normal viewing sizes.
However, some image types need more care:
The best approach is practical, not theoretical: convert, preview, zoom in on important areas, and compare size savings against visible quality changes.
Some PNG files tend to convert especially well:
Images that may require more testing include highly detailed technical diagrams, tiny text labels, pixel art, and brand marks that demand exact edge fidelity.
If you want a simple browser-based workflow, PixConverter keeps the process quick.
Start by opening PixConverter and selecting your PNG image. This works well for screenshots, transparent graphics, product images, and general web assets.
Select AVIF from the available output options. This tells the tool to encode the image into a more storage-efficient format designed for modern delivery.
Run the conversion and let the tool generate your new AVIF file.
Download the converted image, then inspect it before publishing. Compare file size, transparency behavior, edge quality, and any text or fine-detail areas.
Once the result looks good, use the AVIF version on your site, landing page, store, blog, or interface.
Tool CTA: Want a faster image optimization workflow?
Convert PNG to AVIF with PixConverter to reduce file size while keeping transparency and modern visual quality.
There is no single percentage that applies to every file, but reductions can be substantial. In many cases, AVIF can produce files that are dramatically smaller than PNG, especially when the PNG contains photographic detail, gradients, or export overhead that newer codecs handle more efficiently.
For some assets, the savings may be moderate. For others, they can be dramatic.
The actual result depends on:
If your current PNG is bloated, AVIF often gives you one of the strongest reductions available among modern image formats.
This is a common comparison because both AVIF and WebP are used to replace heavier PNG files on the web.
| Question | AVIF | WebP |
|---|---|---|
| Typical compression efficiency | Usually stronger | Good |
| Transparency support | Yes | Yes |
| Modern web optimization | Excellent | Very good |
| Compatibility comfort level | Good on modern platforms | Broader legacy comfort |
| Best choice when minimizing size is top priority | Often yes | Sometimes |
If you want the smallest practical output and your audience uses modern browsers, AVIF is often the stronger choice. If you want a more familiar modern format with broad support, WebP is also useful.
If you want to compare both workflows, PixConverter also offers pages for PNG to WebP and WebP to PNG.
If the source image already contains artifacts, odd transparency edges, or export noise, converting it will not magically fix those issues. Use the best version available.
Logos, icons, and cutout objects should be checked against both light and dark backgrounds. This helps reveal halos or edge softness that may not be obvious at first glance.
Small interface labels and screenshot text can be sensitive to stronger compression. If readability matters, test at the exact display size.
Keep the PNG source file as a master asset, especially if you may need further edits later. Use AVIF as the distribution version.
An image that looks perfect at 800% zoom may still be completely fine in real use. Judge the output at realistic sizes on desktop and mobile.
Converting PNG to AVIF is not just about storage. It can support broader site performance goals.
Smaller images can help:
Image optimization alone will not guarantee rankings, but faster pages and better usability support the overall technical quality of a site. For image-heavy websites, product pages, blogs, and portfolios, that can make a meaningful difference.
No. AVIF is often better for delivery and file size, but PNG is still excellent for editing, compatibility, and exact pixel retention.
Yes, especially on websites, as long as you check edge quality and transparency. For editing or universal handoff, keeping the original PNG is still smart.
It works well in modern environments, but if you have edge-case compatibility needs, you may still want fallback formats in some workflows.
Often yes, but screenshots with tiny text or thin UI lines should be reviewed carefully after conversion.
It can, depending on the settings. In many cases, quality remains visually strong while file size drops significantly. Always review the output if the image contains text, sharp edges, or detailed transparency.
Yes. AVIF supports transparency, which makes it a practical replacement for many web PNGs.
Usually, yes. AVIF is often much more efficient, especially for web delivery.
No. It is better to keep the PNG as your source or backup, then use AVIF as the optimized version for publishing.
Using an online tool like PixConverter is one of the easiest options because it avoids software installs and makes the workflow fast.
If your PNG files feel too heavy for modern web use, converting them to AVIF can be a smart upgrade. You can often preserve transparency, maintain strong visual quality, and cut file size enough to improve page speed and overall efficiency.
The best candidates are web graphics, transparent assets, screenshots, interface elements, and product images that do not need to remain in bulky lossless PNG form for delivery.
The safest workflow is simple: keep your original PNG, create an AVIF version for publishing, and inspect important details before replacing the live image.
Need a quick way to optimize images online? PixConverter helps you switch between popular formats in a few steps.
If your goal is smaller files, faster pages, and practical image workflows, start with the format that fits the job and let PixConverter handle the conversion.
