PNG to AVIF converter: free, fast and secure
Need to change an image from PNG to AVIF? This tool does it instantly and for free, without uploading your pictures anywhere. AVIF gives the smallest file size of any common format, perfect for speeding up modern websites and online stores.
Unlike most converters, ConvertKaro never uploads your images. The conversion happens on your own device, so it is quicker, there are no file limits, and your photos stay private.
How to convert PNG to AVIF in 3 steps
- Add your PNG files. Tap “Select files” or drag and drop one or more .png images into the box above. You can also paste a screenshot with Ctrl+V.
- Adjust the options. Set the quality slider. Lower quality means a smaller AVIF file.
- Download your AVIF. Conversion starts instantly. Download each AVIF file, or all of them at once as a ZIP.
Why use ConvertKaro PNG to AVIF? Free, fast and secure
Many online tools upload your file to a remote server and make you wait. ConvertKaro is different.
100% Free
Use PNG to AVIF completely free, every day. No credit card, no “pro” version and no daily cap on files.
Fast results
No waiting for uploads to finish. The work happens on your device the moment you add a file, which makes it noticeably faster than server-based tools.
Secure and private
Your files never leave your device. ConvertKaro does not upload, store or look at your documents and photos, which makes it safe for ID cards, bank statements and private pictures.
No signup, no watermark
You do not need to sign up or log in, and your output is clean, without any logo or branding.
Works on every device
Nothing to install: it runs in any modern browser on phones, tablets and computers.
Quality you control
A simple quality slider lets you choose between the smallest file and the best picture, with a sensible default already set.
ConvertKaro vs other online converters
| ConvertKaro | Typical online tool | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your files | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
PNG vs AVIF: what is the difference?
Before converting, it helps to know how the two formats compare.
| PNG | AVIF | |
|---|---|---|
| Full name | Portable Network Graphics | AV1 Image File Format |
| Type | Raster, lossless | Raster, lossy or lossless |
| Compression | Lossless | Lossy and lossless (AV1) |
| Transparency | Yes | Yes |
| Animation | No | Yes |
| File size | Large for photos, small for graphics | Smallest |
| Support | Everywhere | Chrome, Edge, Firefox, Safari 16+; few desktop apps |
| Best for | Logos, screenshots, graphics with text, transparent images | High-performance websites, modern apps |
What is PNG?
PNG is a lossless image format, so it keeps every pixel exactly as it is. It supports full transparency, which makes it the standard choice for logos, icons, screenshots and graphics with sharp text. Because nothing is thrown away, photos saved as PNG are usually much larger than the same photo as JPG or WEBP. PNG works in every browser, design tool and operating system.
What is AVIF?
AVIF is the newest mainstream image format, based on the AV1 video codec. It often makes files 30–50% smaller than JPG and noticeably smaller than WEBP at the same visual quality, with support for transparency, HDR and wide colour. Modern browsers display AVIF, but many desktop apps, older phones and upload forms still cannot open it.
When should you convert PNG to AVIF?
- Hero images and banners on modern websites
- Image-heavy apps where every kilobyte counts
- Next-generation e-commerce catalogues
- Testing the best possible compression
Tips for the best AVIF results
- For websites, 75–85% quality is usually the best balance between size and sharpness.
- You can convert many PNG files at once. They are processed one after another and can be downloaded together as a ZIP.
- Keep your original PNG files until you have checked the converted AVIF images.
How PNG to AVIF keeps your photos and images private
Most online converters upload your file to their server, process it there and send it back. That costs time, uses your data pack and means a copy of your file sits on someone else’s computer. PNG to AVIF works differently: the page loads the tool into your browser, and your photos and images are processed by your own phone or computer. The file never travels over the internet, so it cannot be leaked, stored or misused.
Using PNG to AVIF on your phone
PNG to AVIF is designed for small screens. Buttons are large, options are simple, and downloads save directly to your phone storage. On iPhone, downloaded files appear in the Files app under Downloads; on Android they go to the Downloads folder.
Who uses PNG to AVIF?
You do not need any technical knowledge to use it. It is popular with:
- Students uploading photos and signatures to exam and admission forms
- Online sellers preparing product photos for Instagram, Meesho, Amazon and Shopify
- Office staff handling ID cards, scans and screenshots
- Bloggers and web designers who need fast-loading images
- Anyone sharing pictures on WhatsApp, email or social media
Supported input: JPG, JPEG, PNG, WEBP, HEIC/HEIF (iPhone), AVIF, GIF, BMP, TIFF and SVG.
Frequently asked questions
Will converting PNG to AVIF reduce quality?
AVIF stores the image lossy and lossless (av1), so no extra quality is lost during conversion.
Does AVIF keep transparency from PNG?
Yes. AVIF supports transparency, so transparent areas in your PNG stay transparent.
Can I convert multiple PNG files to AVIF at once?
Yes. Select or drop as many PNG images as you like. Each one is converted separately, and you can download them all together as a ZIP file.
Is PNG to AVIF really free?
Yes. PNG to AVIF on ConvertKaro is 100% free with no limits, no signup and no watermark. There is no paid version.
Is it safe to use PNG to AVIF online?
It is one of the safest ways to do it, because nothing is uploaded. All processing happens locally on your device, and the files disappear when you close the page.
Does PNG to AVIF work on mobile?
Yes. It works in Chrome and Safari on Android phones and iPhones, as well as on tablets and computers. No app is needed.
Is there a file size limit in PNG to AVIF?
No upload means no server limit. The only limit is your device’s memory, which comfortably handles everyday files and even large batches.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Your downloaded file is exactly your result.
Does PNG to AVIF work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.