Finally a truly free unlimited converter! Convert unlimited images online – 100% free, no sign-up required
Menu
CZ | EN
Date published: June 3, 2026
Last update: June 3, 2026
Author: Marek Hovorka
Category: Image Conversion Guides
Tags: AVIF image format, convert png to avif, Image optimization, png to avif, Web Performance
Learn when converting PNG to AVIF is the right move, how it affects quality and transparency, and how to create smaller image files for faster pages without breaking your workflow.
PNG is one of the most useful image formats on the web, but it is also one of the easiest ways to end up with oversized assets. If you work with screenshots, interface graphics, logos, illustrations, or transparent web elements, PNG often gives you clean edges and dependable quality. The tradeoff is file size. That is where AVIF becomes interesting.
If your goal is to convert PNG to AVIF, you are usually trying to keep the image looking good while making it much lighter. In many cases, that works extremely well. AVIF can shrink image files dramatically compared with PNG, including transparent graphics, while still producing strong visual results for websites and apps.
But this is not a one-size-fits-all upgrade. Some PNG images convert beautifully to AVIF. Others need testing, especially if they contain text, thin lines, sharp UI details, or must remain pixel-perfect. This guide explains when PNG to AVIF is worth it, what changes during conversion, how to avoid quality surprises, and how to build a practical workflow around it.
If you want to try it right away, PixConverter makes it easy to convert PNG to AVIF online with a fast browser-based workflow.
The main reason is simple: PNG files can be very large.
PNG uses lossless compression, which means it preserves image data very well. That is great for editing and preserving exact detail, but it often produces heavier files than modern delivery formats. AVIF was designed with better compression efficiency, so it can deliver much smaller sizes at similar perceived quality in many web use cases.
That matters when you care about:
For developers, marketers, and site owners, converting a library of large PNG assets into AVIF can have a direct performance benefit. For designers and everyday users, it can also make files easier to manage and distribute online.
AVIF is a modern image format built for efficient compression. Compared with PNG, it often delivers a far better size-to-quality ratio. It also supports transparency, which is a major reason people consider it as a replacement for many web PNGs.
| Feature | PNG | AVIF |
|---|---|---|
| Compression style | Lossless | Usually lossy, can also support lossless |
| Typical file size | Larger | Much smaller in many cases |
| Transparency support | Yes | Yes |
| Best for editing masters | Excellent | Usually not ideal |
| Best for web delivery | Good, but heavy | Excellent when supported in workflow |
| Text and UI sharpness | Excellent | Can be excellent, but needs testing |
| Legacy compatibility | Very strong | More modern, less universal in old environments |
In practical terms, PNG is often the safe original. AVIF is often the smarter delivery copy.
Not every PNG should be converted automatically. The best results come when the source image and final use case match AVIF’s strengths.
If your site uses large transparent PNGs for banners, callouts, product cutouts, decorative overlays, or UI graphics, AVIF can significantly reduce page weight. This is one of the strongest use cases.
Screenshots saved as PNG can be surprisingly heavy, especially at high resolution. AVIF often cuts size dramatically. You should still review images that contain very small text or fine interface elements, but the savings can be excellent.
If a logo is being delivered as a raster PNG rather than SVG, AVIF can help reduce file size. The result can work very well, especially for larger display contexts. Test carefully if the logo contains fine strokes or hard-edged typography.
If the PNG is a final export rather than a working design file, AVIF is often a better delivery choice. Keep the original PNG as your backup or source asset, then publish the AVIF version online.
There are also cases where converting PNG to AVIF is not the best move, or at least not the only move.
If you need exact lossless preservation for editing, archiving, or handoff, PNG is still safer. AVIF can be highly efficient, but once you optimize for file size, you may introduce subtle changes.
AVIF usually performs very well, but aggressive compression can soften hard edges. User interface screenshots, charts, diagrams, and code snippets should always be checked closely after conversion.
Modern browsers support AVIF well, but some apps, older systems, and legacy publishing environments may still prefer PNG or JPG. If compatibility is uncertain, test first.
AVIF is usually best as an output format, not a master working file. If you expect to make multiple changes later, keep your PNG original.
A lot of users ask whether AVIF will preserve everything from the PNG. The honest answer is: it preserves many practical benefits, but not always in the same way.
This is one of the biggest advantages. If your PNG has a transparent background, AVIF can usually keep that transparency. That makes it useful for overlays, product cutouts, icons, and layered web graphics.
This is the main win. Depending on the image, the AVIF version can be substantially smaller than the PNG. For some images, the difference is dramatic.
If the conversion uses lossy settings, some detail may change. In many real web scenarios, that change is hard to notice. But with sharp text, line art, or precise UI components, the difference can matter.
PNG is often easier to use across editors and workflows. AVIF is better thought of as a web-optimized output format.
Good conversion is not just about changing the extension. The source image and export choices both matter.
If the source image already has artifacts, edge problems, or unnecessary dimensions, AVIF will not magically fix them. Clean exports lead to cleaner conversions.
Do not convert a 4000-pixel-wide PNG if your site only displays it at 1200 pixels. Resize first if appropriate. Format optimization and dimension optimization work best together.
After conversion, zoom in on:
If any of those look softer than expected, try a higher-quality setting or keep PNG for that specific asset.
For production workflows, the best practice is simple: keep the PNG source, publish the AVIF version. That gives you flexibility later without re-exporting from a compressed file.
If you want a quick workflow, online conversion is usually the easiest option.
Fast tool: Use PixConverter’s PNG to AVIF converter to upload your PNG, convert it in moments, and download a lighter AVIF file for web use.
The basic process is straightforward:
This is ideal for one-off assets, blog images, design exports, transparent graphics, and performance-focused website updates.
AVIF can be excellent for screenshots, especially large ones used in articles or landing pages. Still, inspect small labels and interface text before replacing PNG everywhere.
If the logo is raster-based and displayed on the web, AVIF may work well. But if the logo is available in SVG, SVG is usually the better web format for crisp scalability.
This is often a very strong AVIF use case. Transparent PNG product images can be heavy, and AVIF can reduce them substantially while preserving transparent backgrounds.
Proceed carefully. These often contain fine text, thin strokes, and high-contrast edges. AVIF may still work, but quality review is essential.
If they are being published on your own site, AVIF can be useful. If they must be uploaded to many platforms, PNG or JPG may still be more universally accepted depending on the destination.
Indirectly, yes.
Image format changes do not create rankings by themselves. Search engines do not reward a page just because an image is AVIF. What matters is the effect on user experience and site performance.
Smaller images can help with:
Those factors can support technical SEO and user satisfaction. In other words, PNG to AVIF is best understood as a performance optimization that can contribute to stronger search performance over time.
If you are converting PNGs for a live site, use a practical publishing strategy.
Most modern browsers handle AVIF well, but some workflows still use fallback images. Depending on your stack, that might mean keeping a PNG or WebP copy available too.
A modern format helps, but oversized dimensions still waste bandwidth. Serve images at the size each layout actually needs.
Use descriptive filenames tied to content intent. Good file naming supports cleaner asset management and can complement image SEO practices.
Bulk conversion is useful, but review representative samples first. Some asset categories may be perfect for AVIF, while others are better left as PNG.
Some should. Some should not. The right answer depends on image type, quality tolerance, and compatibility needs.
If the AVIF looks better only because it was resized smaller, that is not a fair format comparison. Always compare like for like.
Keep your original PNG. It is your safety copy and often your best editable source.
Transparent assets need close review around soft shadows, anti-aliased borders, and composited edges.
Screenshots, logos, product cutouts, and illustrations do not all respond the same way to compression. Test by category.
Many image workflows do not stop at one format. Depending on the destination, you may also need more universal or editing-friendly outputs.
PixConverter provides several useful tools you can link into your process:
Yes. AVIF supports transparency, which is one of the main reasons it is considered as a replacement for many web PNGs.
Often yes, but not always in every possible case. The biggest savings usually appear on large images or graphics where modern compression is highly effective.
It can, depending on settings and image type. In many web situations the visual change is minimal, but you should check images with fine text, line art, or detailed interface elements.
For delivery efficiency, often yes. For editable originals and guaranteed legacy compatibility, PNG still has advantages. Many teams keep PNG as the source and AVIF as the published version.
Yes, especially if the logo is already raster-based. But if you have an SVG version, SVG is usually the better choice for scalable web display.
No. Start with the heaviest assets and test by image category. Product cutouts, decorative graphics, and many screenshots are strong candidates. Precision diagrams and tiny text images need closer review.
Converting PNG to AVIF is one of the most practical ways to cut image weight for modern websites. When the source image is suitable, the gains can be substantial: smaller files, faster pages, and cleaner delivery without giving up transparency.
The smart approach is not to treat AVIF as a universal replacement for PNG. Instead, use it where it clearly improves performance, keep your PNG originals, and review quality where precision matters most.
Ready to optimize your images?
Use PixConverter to convert PNG to AVIF in seconds, then explore more tools for the rest of your workflow:
Choose the format that fits the job, keep your originals, and publish lighter images with confidence.
