SparkpondYour pixels stay in this tab.
Convert PNG to AVIF
Drop PNG files here. The input signature is checked and AVIF is already selected; dimensions stay unchanged unless you choose an edit.
- Add images
- Adjust
- Download
Drop images here
or choose files from this device
JPEG, PNG, WebP, AVIF, HEIC/HEIF · batch size adapts to your deviceTry a sample:
- ✓ No upload
- ✓ No account
- ✓ Works locally
Weight, dimensions and format are verified.
No account, queue or upload.
From image to download in three steps
- 1 Add
Choose one or more images.
- 2 Adjust
Adjust only the settings for this tool.
- 3 Download
Get the validated result.
Guide · EN
How it works
Add an image; its real format is checked locally.
Review the visible preset and adjust it if needed.
Process and download only the validated result.
Formats and settings
- Drop PNG files here. The input signature is checked and AVIF is already selected; dimensions stay unchanged unless you choose an edit.
A concrete example
Convert a PNG image to a validated AVIF file, compare it with the source, then download the real browser-generated result.
Know before you start
- AVIF can preserve transparency when the source and selected mode support it.
- Animated sources are processed as a still image unless the interface explicitly says otherwise.
FAQ · 3
Frequently asked questions
Does PNG to AVIF change dimensions?
Not with the initial preset. Resize and crop remain separate choices.
How is the real format checked?
The app inspects the binary signature in a Worker instead of trusting the extension alone.
Does the file leave this device?
No. Conversion and output validation happen locally in the browser.