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Date published: June 20, 2026
Last update: June 20, 2026
Author: Marek Hovorka
Category: Image Conversion Guides
Tags: avif image optimization, convert png to avif, png compression, png to avif, website image formats
Learn when converting PNG to AVIF makes sense, how much file size you can save, what happens to transparency and quality, and how to convert PNG files cleanly for web use.
PNG is still one of the most common image formats on the web, especially for screenshots, interface graphics, logos, and images with transparency. But PNG files can also become very large, which slows down pages, increases bandwidth use, and makes uploads heavier than they need to be.
That is where AVIF becomes useful. If you need smaller image files without giving up sharp edges or transparent backgrounds, converting PNG to AVIF can be a very smart move. In many cases, AVIF delivers dramatically better compression than PNG while keeping the image visually clean.
This guide explains when PNG to AVIF conversion makes sense, what you gain, what to watch out for, and how to get better results with an online converter like PixConverter.
Quick action: Need a fast conversion right now? Use PixConverter to turn PNG files into modern AVIF images for smaller uploads and faster page delivery.
PNG and AVIF are both image formats, but they are built for different priorities.
PNG is known for lossless quality, wide compatibility, and strong support for transparency. It is excellent when you need exact pixel preservation. The downside is file size. Even simple PNG images can be much heavier than modern formats.
AVIF is a newer format designed for much stronger compression efficiency. It can store images at very small sizes while still looking excellent. It also supports transparency, which makes it especially interesting as a replacement for many PNG web assets.
When you convert PNG to AVIF, the main change is this: you usually get a much smaller file, often with little or no visible quality loss at sensible settings.
Most users looking for PNG to AVIF conversion have a practical goal, not just a format question. They usually want one of these outcomes:
That search intent is important. People are not simply asking what AVIF is. They want to know whether converting a PNG file will actually help in real use.
In many cases, yes, it will.
| Feature | PNG | AVIF |
|---|---|---|
| Compression type | Usually lossless | Lossy or lossless |
| File size efficiency | Often large | Usually much smaller |
| Transparency support | Yes | Yes |
| Best for | Editing, archival precision, broad compatibility | Web delivery, performance, modern optimization |
| Browser support | Excellent | Good in modern browsers |
| App compatibility | Very broad | More limited in older tools |
| Ideal use case | Source files and reusable graphics | Final web-ready assets |
Not every PNG should be converted automatically. The best results come when you use AVIF selectively.
If you have transparent product cutouts, badges, UI overlays, or web graphics, AVIF can often keep the transparency while shrinking the file significantly. This can reduce page weight without forcing you to move to JPG, which does not support transparency.
PNG is commonly used for screenshots because it keeps edges crisp. But screenshots can get heavy fast. AVIF often compresses them far more efficiently, especially for web publishing, knowledge bases, and SaaS documentation.
If your site, app, or CMS contains many PNGs, converting the web-delivery versions to AVIF can save substantial storage and bandwidth over time.
Image weight affects Core Web Vitals, user experience, and mobile browsing speed. Smaller files can help pages feel faster, especially on slower connections.
AVIF is powerful, but PNG still matters.
Keep the original PNG when:
A smart workflow is often to keep PNG as the source file and export AVIF as the delivery file.
The answer depends on the image.
For simple graphics, flat-color elements, screenshots, and transparent assets, AVIF can sometimes cut file size by a large margin. In practical web workflows, reductions of 40%, 60%, or even more are not unusual.
But results vary. An image with sharp edges, text, gradients, and transparency behaves differently from a photo or a logo. This is why testing matters.
Instead of assuming every PNG should become AVIF, compare the outputs visually and check actual file size savings.
Yes. This is one of the biggest reasons people convert PNG to AVIF.
Unlike JPG, AVIF supports transparency, so clear backgrounds and soft edges can remain intact. That makes AVIF useful for assets such as:
Still, it is worth checking the output. Fine anti-aliased edges, shadows, and semi-transparent pixels should be reviewed after conversion, especially if you used stronger compression.
It can, depending on the settings.
PNG is commonly used as a lossless format. AVIF can be encoded in a way that balances size and quality, which often means a lossy result. The good news is that AVIF is very efficient, so you can usually get excellent visual quality at much smaller sizes than PNG.
For many web uses, the difference is hard to notice. But if the image contains tiny text, sharp UI lines, or edge-sensitive graphics, review it at actual display size before replacing the original.
With PixConverter, the workflow is simple.
For web teams, creators, and site owners, online conversion is useful because it removes the need for desktop tools or manual export setups.
Use case: If your PNG files are slowing down pages, convert a few of your largest transparent assets to AVIF first and compare the before-and-after page weight.
Image optimization alone does not guarantee rankings, but it does support the technical quality signals that matter for search performance.
Lighter images can help with:
If your site depends on image-rich product pages, landing pages, portfolios, or blogs, reducing PNG weight can have a meaningful effect on performance.
That is one reason AVIF has become part of modern image delivery stacks.
Some PNGs benefit greatly. Others do not. Test high-impact assets first.
Do not overwrite your original PNG masters. Keep them for editing and future exports.
If the image is going into a workflow with older software, make sure AVIF is accepted before converting at scale.
AVIF is efficient, but aggressive settings can soften small text and thin lines.
Inspect soft edges, shadows, and semi-transparent regions on actual backgrounds.
Many users compare AVIF with WebP because both aim to reduce image weight and support transparency.
In general, AVIF often compresses better than WebP, but WebP may still fit some workflows due to broader support in certain tools and established use across many websites.
If you are deciding between the two:
If you also want to create WebP versions, PixConverter offers a related tool at /convert-png-to-webp.
If you manage website images regularly, this workflow works well:
This approach protects flexibility while still improving front-end performance.
If your images live mainly on the web, AVIF deserves testing.
For web delivery and file size, often yes. For editing compatibility and exact lossless master files, PNG is still often better. They serve different roles.
Yes. AVIF supports transparency, which makes it a strong modern alternative to PNG for many web graphics.
Not necessarily. At sensible settings, AVIF can look excellent. But very aggressive compression can reduce edge clarity, especially on text and interface graphics.
No. Keep the PNG as your source or archive file. Use AVIF as the optimized output for delivery.
It can be, especially for web use and transparency. Still, logos with fine text or strict brand requirements should be checked carefully after conversion.
The main reason is to reduce file size while keeping visual quality high and preserving transparency.
Converting PNG to AVIF is one of the most practical ways to modernize heavy image assets for the web. It is especially useful when you need to keep transparency but want much smaller files than PNG usually allows.
The key is to use it strategically. Keep PNG as the source when you need editability and exact preservation. Use AVIF as the lean, web-ready version when speed and efficiency matter most.
For many websites, that simple shift can lead to lighter pages, smoother browsing, and better overall image delivery.
Use PixConverter to convert PNG files into smaller AVIF images for faster loading and cleaner delivery. If you need other formats for editing, sharing, or compatibility, these tools can help too:
