Finally a truly free unlimited converter! Convert unlimited images online – 100% free, no sign-up required
Menu
CZ | EN
Date published: May 25, 2026
Last update: May 25, 2026
Author: Marek Hovorka
Category: Image Conversion Guides
Tags: avif image converter, Image optimization, png to avif
Learn when converting PNG to AVIF is the right move, how much size you can realistically save, what happens to transparency and quality, and how to get cleaner web-ready images with a simple online workflow.
PNG is one of the most useful image formats on the web. It supports transparency, preserves detail well, and works almost everywhere. But it also has a well-known downside: file size. If you are publishing interface graphics, transparent assets, product cutouts, illustrations, screenshots, or logos as PNG, those 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 looking for one of three things: smaller files, faster pages, or more efficient transparent images. In many cases, AVIF can help with all three. Still, conversion is not automatically the best choice for every PNG. Some images shrink dramatically. Others improve only a little. And in the wrong workflow, you can introduce softness, artifacts, or compatibility headaches.
This guide explains what actually happens when you convert PNG to AVIF, when the format switch is worth it, what tradeoffs to expect, and how to get better results from the start. If you want to try it now, you can use PixConverter to handle the process quickly online.
Quick action: Need a smaller web-ready version of a PNG? Use PixConverter to convert PNG to AVIF in your browser without installing software.
Most PNG to AVIF conversions are driven by performance, not editing needs.
PNG is a lossless format. That makes it excellent for preserving pixel-perfect details, crisp UI elements, and transparent edges. But lossless storage often creates larger files than modern web formats. AVIF is designed for high compression efficiency, so it can often deliver much smaller files while keeping images visually strong.
That matters in real-world scenarios:
For site owners, designers, developers, and ecommerce teams, this can translate into better page speed, smoother user experience, and leaner image workflows.
AVIF is a modern image format based on the AV1 codec family. In practical terms, that means it is built to compress images more efficiently than many older formats.
Its main advantages include:
That said, AVIF is not a universal replacement for PNG in every context. It is often best as a delivery format, especially for the web, not necessarily as your long-term editing master.
| Feature | PNG | AVIF |
|---|---|---|
| Compression type | Typically lossless | Usually lossy, can be highly efficient |
| Transparency | Yes | Yes |
| File size | Often large | Often much smaller |
| Editing friendliness | Very good | Less ideal as a working file |
| Web performance | Good but heavier | Excellent when supported |
| Compatibility | Near universal | Modern but not as universal as PNG |
| Best use | Source assets, transparency, archival detail | Optimized web delivery, smaller transparent images |
The key takeaway is simple: PNG is often better as a source format, while AVIF is often better as a delivery format.
If your PNG files appear on web pages, landing pages, blogs, product listings, app interfaces, or documentation, AVIF can be a strong upgrade. Smaller files usually mean faster rendering and less data transfer.
This is especially useful when pages contain many transparent assets or repeated decorative graphics that add up quickly.
Some PNGs look lightweight because their dimensions are modest, but they can still be large because of detailed transparency, high bit depth, or complex image content. AVIF may reduce these files enough to improve mobile loading noticeably.
One of PNG’s biggest strengths is transparency. One of its biggest weaknesses is that transparent images can stay bulky. AVIF can preserve transparent backgrounds while compressing much more efficiently, which makes it a smart option for product cutouts, stickers, badges, overlays, and UI elements.
If the file you are converting is meant for display rather than future editing, AVIF often makes more sense. Keep the original PNG stored safely, then publish the AVIF version on your site or platform.
Not every image should be converted.
If you plan to keep making changes, layer exports, or repeated revisions, retain the PNG or even the original design source. AVIF is better treated as an output format, not your primary working file.
While AVIF support is much better than it used to be, PNG is still the safer universal choice for older software, legacy workflows, and certain upload systems. If compatibility is more important than file size, PNG may remain the better option.
If a file is already very small, the practical gain from conversion may be minor. In such cases, extra format changes may not justify the effort.
AVIF can preserve quality well, but very aggressive compression may soften tiny text, sharp line art, or edge transitions. The right settings matter.
There is no universal percentage because image content matters a lot. But in practical web use, AVIF often delivers meaningful savings, especially on transparent graphics and mixed-detail images.
Results usually depend on:
For example, a raw exported PNG from a design tool may shrink dramatically. A carefully optimized PNG might still improve, but by a smaller margin. Product images with transparent backgrounds, interface elements, and large screenshots often benefit more than people expect.
The only reliable rule is to compare the output visually and check the resulting file size.
This is one of the most important questions in PNG to AVIF conversion.
Good news: AVIF supports transparency. That means you do not have to flatten a transparent PNG onto a white or colored background just to reduce file size.
However, transparency quality can still be affected by compression choices. If settings are too aggressive, you may notice:
These issues are not guaranteed, but they are worth checking carefully on logos, overlays, product cutouts, and icons. The best workflow is to preview the converted image against both light and dark backgrounds before publishing.
Some PNG categories are especially strong candidates for AVIF:
If your site currently serves many PNGs, converting selected assets to AVIF can be one of the cleaner ways to reduce page weight without redesigning the content itself.
If the source PNG is already blurry, poorly exported, or oversized, conversion will not magically fix it. AVIF can make delivery more efficient, but it cannot restore lost detail.
Do not upload a 3000-pixel-wide PNG if the image only displays at 800 pixels on your page. Resize first, then convert. This often has a bigger impact than format changes alone.
Small text, diagrams, and interface labels are more sensitive to compression artifacts. If these elements matter, use gentler settings and inspect the output closely.
A transparent image may look fine on white but show rough edges on dark sections of a page. Always preview both.
For editing, archiving, or repurposing, the original PNG is still valuable. Think of AVIF as your optimized export.
If you want the fastest route, an online converter is usually enough.
This workflow works well for one-off assets and larger batches alike, especially when you want quick results without opening full design or image-editing software.
Try the tool: Convert your image now with PixConverter and compare PNG vs AVIF file size in minutes.
Always keep the source PNG if you may need to edit the image later. Converting back and forth between formats is not a good substitute for preserving your original asset.
Many do, but not all. Image content determines the result.
If a file must be uploaded to a platform, embedded in a workflow, or shared with users on older tools, verify that AVIF is accepted first.
Simple logos can compress well, but edge cleanliness matters. Inspect carefully.
Serving overlarge images wastes bandwidth no matter what format you choose.
This depends on the image and the workflow. AVIF often has stronger compression potential, but WebP remains a practical and widely used modern web format. If you need to compare options, both can be useful replacements for PNG depending on the asset type and support requirements.
If AVIF does not fit your workflow, you may also want to try PNG to WebP conversion. For broader format changes in your image pipeline, PixConverter also supports tools like PNG to JPG, JPG to PNG, WebP to PNG, and HEIC to JPG.
Use this quick test:
The best answer is often not replacing PNG everywhere. It is using PNG where it is strongest and AVIF where delivery efficiency matters most.
It can, depending on settings. AVIF is often used with lossy compression, so there may be some tradeoff. In many web use cases, the visible difference is small while the file size reduction is significant.
Yes. AVIF supports transparency, which is one of the main reasons people convert transparent PNG files to AVIF.
Often, but not always. Results depend on image content, dimensions, transparency, and compression choices.
No. It is usually best to keep the original PNG as your editable or archival source and use AVIF as the delivery version.
Sometimes. It can work well for web-delivered logos, especially when file size matters, but you should check edge sharpness and transparency carefully. For scalable brand assets, vector formats may still be preferable when available.
Yes, especially for web publishing. Just inspect small text and UI details after conversion to make sure they remain clear.
Keep the PNG, or consider another web-friendly format based on your use case. If your needs change, you can also use related tools such as PNG to JPG or PNG to WebP.
Converting PNG to AVIF is not about changing formats for the sake of it. It is about using a more efficient delivery format when your PNG files are slowing pages down, taking up too much space, or making transparent web assets heavier than they need to be.
For many websites, AVIF is a smart optimization step. It can preserve transparency, cut file weight substantially, and help create a faster experience for visitors. But the best results come from using it selectively, keeping your original PNGs, and checking output quality where it matters most.
If your current image library is packed with heavy PNGs, this is one of the easiest improvements to test.
Ready to make your PNG files lighter and more web-friendly? Use PixConverter to convert PNG to AVIF online in a fast, simple workflow.
You can also explore other useful tools:
Choose the format that fits your image, your workflow, and your performance goals.
