Finally a truly free unlimited converter! Convert unlimited images online – 100% free, no sign-up required
Menu
CZ | EN
Date published: June 4, 2026
Last update: June 4, 2026
Author: Marek Hovorka
Category: Image Conversion Guides
Tags: avif image optimization, convert png to avif, png to avif, transparent image compression, web image formats
Learn when it makes sense to convert PNG to AVIF, what improves, what can break, and how to get smaller transparent images for faster websites and leaner uploads.
PNG is still one of the most common image formats on the web, especially for screenshots, interface graphics, diagrams, icons, and files with transparent backgrounds. But PNG also has a well-known downside: file sizes can get large fast. That is where AVIF becomes interesting.
If you want smaller images without giving up transparency support, converting PNG to AVIF can be a smart move. In many cases, AVIF produces dramatically lighter files than PNG while keeping visuals clean enough for modern websites, product pages, app interfaces, and content-heavy blogs.
Still, conversion is not automatically the right choice for every PNG. Some images benefit a lot. Others may need testing before you switch. This guide explains when to convert PNG to AVIF, what changes during conversion, how to avoid quality problems, and how to use the format in a practical real-world workflow.
If you are ready to try it now, you can use PixConverter to process images online in a quick browser-based workflow.
Yes, often. Converting PNG to AVIF usually makes sense when you want smaller file sizes for web delivery and your audience uses modern browsers and devices.
PNG and AVIF are very different formats.
PNG is traditionally lossless. It preserves image data exactly or very close to exactly, which makes it dependable for editing, archiving design assets, and preserving pixel-sharp edges. AVIF is designed for much better compression efficiency. It can be used in lossy or lossless modes, but in most web workflows it is used to make images substantially smaller than PNG.
When you convert PNG to AVIF, the most important changes are usually these:
That means the conversion is not just about changing extensions. It is about trading broader compatibility and often pixel-perfect preservation for stronger compression and faster delivery.
Some PNGs are ideal candidates for AVIF conversion. Others are better left alone. The easiest way to decide is to think about the image’s job.
If your priority is page speed, Core Web Vitals, bandwidth reduction, or lighter media libraries, AVIF can help a lot.
In short, AVIF is excellent for delivery. PNG is often safer for compatibility and editing.
| Feature | PNG | AVIF |
|---|---|---|
| Compression | Usually larger files | Usually much smaller files |
| Transparency support | Yes | Yes |
| Lossless workflow | Strong native use case | Possible, but less common in typical web use |
| Best for editing | Yes | Not usually the first choice |
| Best for web delivery | Good, but heavier | Excellent in modern environments |
| Compatibility | Near universal | Modern but not universal everywhere |
| Logos and UI assets | Reliable | Can be great, but test edges carefully |
The strongest reason is performance. Heavy PNGs slow pages down, especially when a site contains many transparent graphics, screenshots, feature illustrations, comparison visuals, or layered product images.
Converting these to AVIF can help you:
For content teams, ecommerce stores, SaaS websites, and portfolio sites, that can translate into a better user experience and better performance metrics.
If your current PNG assets are too large, you may also want to compare alternatives like PNG to WebP conversion, especially if you need a format with broad modern support and good compression.
One of the biggest reasons people hesitate to leave PNG is transparency. That is understandable. PNG has long been the default format for transparent backgrounds.
The good news is that AVIF supports transparency too. That means logos, cutouts, interface elements, and isolated objects can often move from PNG to AVIF without being flattened onto a white background.
But there is an important practical note: transparent edges need inspection after conversion. Semi-transparent pixels, anti-aliased edges, shadows, and soft fades can behave differently depending on the encoder and quality level. In many cases they look excellent. In some cases you may see faint halos, rough edges, or minor shifts.
To avoid problems:
Not all PNGs should be compressed the same way. The best results come from matching your export choices to the image type.
Screenshots often contain tiny text, sharp dividers, and interface lines. Aggressive compression can soften these details. If your PNG is a screenshot of software, dashboards, or code snippets, test a higher quality output.
Brand marks, icons, and geometric shapes can reveal compression artifacts more quickly than photos do. Clean edges matter. If the AVIF version starts to look fuzzy or uneven, increase quality or keep PNG for that asset.
A large transparent product cutout may compress beautifully. A tiny sharp icon might not benefit enough to justify the switch. Always compare file size savings against visible change.
For production workflows, retain the original PNG as your editable or source asset. Use AVIF as the delivery copy. That gives you flexibility later if you need to re-export for another platform.
An image can look fine in isolation but behave differently in layout. Test it where it will actually appear: on cards, hero sections, mobile screens, and dark mode backgrounds.
Many conversion issues come from workflow mistakes rather than the format itself.
Not every PNG should become AVIF. Some assets are already small. Some are better kept as PNG because of compatibility or editing needs.
Photos, screenshots, illustrations, and logos all respond differently to compression. Treating them the same usually creates avoidable quality loss.
If your workflow serves users on modern browsers, AVIF may be a strong fit. If your images are used in older software, desktop publishing apps, or client handoff files, PNG may still be more practical.
This is one of the most common oversights. Transparent images should always be reviewed against multiple backgrounds.
There is no single percentage that applies to every image, but AVIF often produces substantial reductions compared with PNG.
You may see:
The exact result depends on image dimensions, color complexity, transparency, sharp edges, and export settings. The key point is that AVIF often gives you a much better size-to-quality ratio than PNG for web delivery.
The easiest workflow is to use a browser-based converter so you can upload, convert, preview, and download without installing desktop software.
If you want a simple online workflow, use PixConverter to convert images directly in your browser.
This is a common question because both formats are modern and web-friendly.
AVIF usually has stronger compression efficiency, especially when reducing file size is your top priority. WebP is also very effective and often easier to fit into established publishing workflows. If you need a practical fallback or want to compare outputs, it is smart to test both.
For that reason, internal format flexibility matters. Depending on the asset, you may also want to use:
The smartest workflow is not choosing one format forever. It is choosing the right format for each asset type.
AVIF can work very well, especially for larger screenshots used in blog posts, product documentation, and feature pages. But if the screenshot includes tiny text, compare closely before replacing the PNG.
AVIF may work well for delivery, especially on modern websites. Still, keep the original PNG or vector source. For branding assets, source preservation matters.
This is one of the strongest use cases. Transparent products can often become much lighter without obvious quality loss.
Good candidate if the site is modern and performance-focused. Test edges, especially on dark mode and high-density screens.
Often excellent candidates, particularly when the PNG file is large and the image will mainly be viewed on the web.
Converting PNG to AVIF does not directly boost rankings by itself, but smaller image files can support several SEO-related goals.
For publishers and site owners, image optimization is one of the most practical improvements available. A format change can have a meaningful impact when repeated across dozens or hundreds of pages.
It is just as important to know when to skip the conversion.
A good rule is simple: use AVIF for delivery when it clearly improves efficiency. Keep PNG when reliability, editing, or exact preservation is more important.
For web delivery, AVIF is often better because it can produce much smaller files while preserving good visual quality and transparency. For editing and universal compatibility, PNG is often safer.
Yes. AVIF supports transparency, which makes it a strong modern alternative to PNG for many transparent web images.
It can, depending on settings and image type. Some images look nearly identical after conversion, while others show softness or edge changes. Always preview the result.
Yes, but test carefully. Logos and other hard-edged graphics can reveal compression issues faster than photos or soft illustrations.
Indirectly, yes. Smaller images can improve page speed and mobile performance, which supports a better user experience and stronger technical optimization.
Usually no. Keep the PNG as your source or backup file, and use AVIF as the optimized delivery version.
Converting PNG to AVIF is one of the most useful image optimization moves for modern websites, especially when you are dealing with heavy transparent graphics, screenshots, product cutouts, or large media libraries. The format can cut file size significantly while still preserving the visual quality needed for real-world publishing.
But the best results come from selective use. Test assets that contain fine text, hard edges, and brand-sensitive details. Keep original PNGs for editing. Use AVIF where performance gains are clear and compatibility is sufficient for your audience.
If you treat PNG as the source format and AVIF as the delivery format, you will usually get the best of both worlds.
Need a fast way to switch image formats online? PixConverter makes it easy to convert and optimize images for web publishing, design handoff, uploads, and everyday compatibility.
Start using PixConverter now to convert images in a quick, browser-based workflow.
