Secure server conversion
PNG to AVIF Converter
Convert PNG images to AVIF and keep full transparency. Because PNG is one of the least space-efficient formats and AVIF is the most efficient, this often produces the largest saving available for a PNG — frequently 70–90% for a photograph stored as PNG.
Drag and drop your PNG images here
Add several at once. Each file is processed and then deleted from our server.
Up to 20 MB per file Batch ready
Higher keeps more detail; lower makes a smaller file. Applies to images you add after changing it.
Conversion queue
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Step by step
How to convert PNG to AVIF in 4 steps
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Add your PNG files
Drag them in or click to browse.
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Set the quality
80 by default — higher than you would use for a photograph, because PNGs are usually graphics.
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Wait a moment
AVIF encoding is slower than other formats.
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Download
Transparency carries over automatically.
Format comparison
PNG vs AVIF
PNG (Portable Network Graphics)
LosslessStores every pixel exactly as it was saved, so nothing is lost however often the file is opened and saved.
- Pixel-perfect: ideal for screenshots, logos and text
- Supported everywhere, including every browser
- Photographs make large files — often several times the JPG size
AVIF (AV1 Image File Format)
Lossy or losslessThe newest widely supported web format, built on the AV1 video codec and designed for the smallest files.
- Usually the smallest file at a given visual quality
- Supported by current Chrome, Edge, Firefox and Safari
- Slow to encode, and unsupported by much older software
This is the one AVIF conversion with no generation loss to worry about, and that changes the advice.
Your source is lossless. A PNG has never had detail discarded, so unlike converting from JPG — where you are compressing something already compressed — this is a single, clean compression pass. Whatever quality you choose, you are working from a perfect original.
The size difference is dramatic because these two formats sit at opposite extremes. PNG stores every pixel exactly and compresses by finding patterns, which works well on flat graphics and badly on photographs. AVIF uses AV1 video compression, the most efficient approach in common use. A photograph saved as PNG can lose 90% of its size converting to AVIF with no visible change.
Transparency is fully preserved, including partial transparency. AVIF carries an alpha channel exactly as PNG does, so a logo with a soft shadow keeps its shadow.
The catch: PNGs are usually graphics
People reach for PNG when they need transparency or crisp edges — logos, icons, screenshots, diagrams, illustrations. Those are precisely the images lossy compression handles least gracefully.
Lossy compression is tuned for gradual colour variation. Flat colour meeting at a hard edge is the opposite, and at middling quality settings it shows as faint blotching inside solid shapes and soft haloing along boundaries — much more noticeable on a clean logo than the same setting would be on a photograph. That is why the default here is 80 rather than the 65 used for JPG sources.
Quality
Quality and file size
What to choose depends entirely on what the PNG actually contains, and the two cases are genuinely different:
If it is a photograph saved as PNG — the size saving is enormous and you can be generous with compression:
- 55–75 — Excellent results, typically 85–95% smaller than the PNG.
- Above 80 — Larger files for no visible gain on photographic content.
If it is a logo, icon, screenshot or diagram — stay high:
- 90–100 — Recommended. Edges stay crisp and flat colour stays flat, and the file is still far smaller than the PNG.
- 80–89 — The default band. Fine for most artwork; look closely at any text.
- Below 80 — Blotching and haloing become visible on graphics, whatever it might look like on a photograph.
A useful check: open the result at 100% zoom and look at the sharpest edge and the largest flat area. Those are where lossy compression shows first.
If a graphic must be pixel-perfect — a technical diagram, a screenshot for documentation — consider WebP at quality 100, or compressing the PNG instead, which reduces the palette rather than the detail.
When PNG to AVIF is the right move
- Photographs mistakenly saved as PNG. The single best case — enormous saving, no visible difference.
- Images with transparency for a website you control. You keep the alpha channel and lose most of the file size.
- Large decorative graphics — hero images, backgrounds, illustrations — where nobody inspects the edges closely.
- Image-heavy pages, where the saving multiplies across every file.
When to keep the PNG
Keep it when the file is going somewhere you do not control. AVIF works in every current browser, but older editors, upload forms, print services and office software frequently reject it — and an image nobody can open is worse than a large one.
Keep it too for master copies you will edit. Converting to lossy AVIF and editing from that starts a chain of loss. Work from the PNG and export AVIF as the final step.
AVIF or WebP for a PNG?
Both keep transparency and both are far smaller than PNG. The difference:
- AVIF is smaller again — typically another 20–30% — but slower to encode, and support outside the browser is thinner.
- WebP encodes quickly, is supported more widely outside the browser, and has a genuine lossless mode if you need pixel-perfect output with transparency.
For a large batch of icons, WebP is usually the more practical answer. For a handful of large images where every kilobyte counts, AVIF wins.
Privacy
What happens to your file
This tool runs on our server, so it works the same on every phone and computer. Your file is uploaded, and this is exactly what happens to it:
- Stored outside the public web root under a random name, never under your file's name.
- Processed, with the original upload deleted immediately — whether it succeeded or failed.
- The result sits behind a signed link that only you receive, which stops working after 20 minutes, and the file is deleted the moment you download it.
- Anything never collected is deleted automatically within 30 minutes.
- The image itself is never logged or kept. If a conversion fails, we record the formats involved and the error — not the file.
- Camera metadata, including any GPS coordinates recording where a photo was taken, is removed from the result. Only the rotation needed to show the image the right way up is kept.
Questions & answers
PNG to AVIF: frequently asked questions
How much smaller will my PNG get?
For a photograph saved as PNG, commonly 85–95% smaller — the largest saving available on this site. For flat graphics the saving is smaller but still substantial, though you should use a higher quality setting to keep edges clean.
Does AVIF keep the transparent background?
Yes, completely, including partial transparency such as soft shadows and anti-aliased edges. AVIF carries a full alpha channel exactly as PNG does.
Why is the default quality higher here than on the JPG to AVIF page?
Because PNGs are usually graphics rather than photographs, and lossy compression handles flat colour and hard edges least gracefully. At middling settings you get blotching inside solid shapes and haloing along edges — far more visible on a logo than on a photo.
Is any quality lost, given PNG is lossless?
Yes — AVIF as used here is lossy, so this is one compression pass on a perfect original. Unlike converting from a JPG there is no accumulated damage, so the result is as good as a single pass can be. Keep the PNG if you need a lossless master.
My logo looks slightly blotchy. What should I change?
Raise the quality to 90 or above. Large areas of flat colour and hard edges are exactly what lossy compression struggles with, and logos are made of both. If it must be pixel-perfect, use WebP at quality 100 or compress the PNG instead.
Should I use AVIF or WebP?
AVIF for the smallest files. WebP when you want quick encoding, wider support outside the browser, or a genuine lossless mode with transparency. For a large batch of icons WebP is usually more practical; for a few large images AVIF wins.
Keep going
Related image tools
AVIF to PNG Converter
Convert AVIF to lossless PNG with transparency preserved. Best before editing, at the cost of a much larger file.
PNG to WebP Converter
Convert PNG to WebP and keep full transparency. Typically 25–50% smaller than PNG. Free, with no sign-up.
JPG to AVIF Converter
Convert JPG photos to AVIF and cut file size by half or more at the same visible quality. The most efficient image format in common use.
Compress PNG
Shrink PNG images by up to 70% while keeping transparency. Uses palette quantisation, which browsers cannot do. Files are deleted immediately after processing.