PNG to AVIF Converter Free
Convert PNG images to AVIF online for free. AVIF delivers dramatically smaller files than PNG while supporting transparency and wide colour gamut. Ideal for web-optimised graphics, logos, and icons. Batch up to 20 files. No signup required.
Drop your PNG files here
or click to browse — PNG · up to 20 files free
PNG · Up to 20 files · Max 200 MB total free
0 PNG file(s) selected
Conversion Options
No account required · Files deleted in 24h
Converting PNG to AVIF…
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Your AVIF files are ready.
Download output.avif—
Files
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Input size
AVIF
Output format
Pro — 200 files/batch, 2 GB, lossless AVIF, 10-bit depth, full alpha precision
API access · Priority queue · Team workspace
How It Works
Convert PNG to next-gen AVIF in three steps
Upload PNG Files
Drag and drop your PNG images onto the upload zone, or click to browse. All PNG variants are supported: 8-bit and 16-bit per channel, RGBA (with transparency), indexed-colour, greyscale, and greyscale-alpha. Free plan supports up to 20 files at a time with a 200 MB total upload limit.
Set AVIF Options
Select AVIF quality and encoding speed. Enable "Preserve transparency" to encode the PNG's alpha channel into the AVIF output — AVIF supports full alpha transparency using a separate AV1-encoded alpha plane, which is stored in the same AVIF container as the colour image.
Download AVIF Files
Get your optimised AVIF files ready for web deployment. AVIF is significantly smaller than PNG — often 80–95% smaller for photographic content, and 50–70% smaller for graphics and UI assets. Use AVIF for web graphics, icon sprites, and transparent overlays where PNG was previously the only lossless option with transparency support.
PNG to AVIF Features
Dramatically reduce image file sizes while keeping full quality
Massive Size Reduction vs PNG
PNG uses lossless DEFLATE compression and stores every pixel at full bit-depth — it is significantly larger than modern lossy formats. AVIF at quality 60 typically produces files 80–95% smaller than the equivalent PNG for photographic content, and 50–70% smaller for graphics. A 2 MB PNG logo might become a 200–400 KB AVIF, with visually identical quality at normal display sizes.
Full Alpha Transparency Support
Unlike JPEG which has no transparency support, AVIF supports full per-pixel alpha transparency using a dedicated 8-bit (or 10-bit) alpha plane encoded separately with AV1. This makes AVIF a genuine PNG replacement for web graphics where transparency is essential — logos, icons, UI overlays, product images on transparent backgrounds. The alpha channel is compressed independently of the colour data for maximum efficiency.
Wide Colour Gamut Support
AVIF natively supports Display P3 and Rec. 2020 wide colour gamut images, as well as HDR with PQ and HLG transfer functions. If your PNG carries an embedded ICC profile (common for Display P3 PNGs from Mac or iPhone screenshots), our converter detects the colour space and correctly handles the conversion, embedding the ICC profile in the AVIF output for colour-accurate display in supporting browsers.
Batch — 20 Files at Once
Convert up to 20 PNG files to AVIF in a single batch with consistent quality settings. This is invaluable for web developers converting an entire icon set, sprite sheet, or UI asset library from PNG to AVIF. Results download as a ZIP archive with original file names preserved. Pro subscribers can process up to 200 files per batch — ideal for large design systems or CMS asset migrations.
Modern Browser Compatible
AVIF with alpha transparency is supported in Chrome 85+, Firefox 93+, Edge (Chromium), and Safari 16.4+. These browsers collectively cover 93%+ of global web traffic as of 2024. For the remaining users, implement a fallback using the <picture> element: <source type="image/avif"> first, then <source type="image/webp">, with a <img src="fallback.png"> final fallback. This ensures everyone gets the best supported format.
Private & No Account Needed
All uploads are encrypted with TLS 1.3. PNG files and AVIF outputs are processed in isolated server containers and permanently deleted within 24 hours. No watermarks are added to converted images regardless of plan. No account, email, or personal information is required to use the free converter — start converting immediately.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Files per batch | 20 | 200 |
| Max total upload size | 200 MB | 2 GB |
| AVIF quality range | 4 presets | CQ 0–63 slider |
| Lossless AVIF output | — | |
| 10-bit alpha precision | — | |
| API access | — | |
| Priority conversion queue | — | |
| Watermark | None | None |
Frequently Asked Questions
For most web use cases, yes — AVIF produces dramatically smaller files than PNG, which means faster page loads, lower bandwidth costs, and better Core Web Vitals (Largest Contentful Paint) scores. However, AVIF is lossy by default (lossless AVIF is available but rarely used due to its large size). If pixel-perfect accuracy is required (medical imaging, archival, source files for further editing), keep PNG. For web-optimised images where visual quality at normal viewing sizes is what matters, AVIF is strongly preferred over PNG.
Yes — AVIF supports full per-pixel alpha transparency. The alpha plane is stored as a separate AV1-compressed greyscale image within the AVIF container. Enabling "Preserve transparency" copies the PNG's alpha data into this separate alpha channel in the AVIF. The resulting AVIF will display with correct transparency in all AVIF-capable browsers (Chrome, Firefox, Edge, Safari 16.4+). This makes AVIF a genuine replacement for PNG for transparent web graphics.
It varies significantly by content type. Photographic images (complex textures, gradients, natural scenes): 80–95% smaller. UI graphics, icons, logos with flat colours: 50–75% smaller. Images with text on solid backgrounds: 60–80% smaller. Highly detailed images with fine noise or dithering: 40–60% smaller. As a rough rule of thumb, expect your PNG to AVIF at quality 60 to be about 5–10× smaller in bytes, while remaining visually indistinguishable at normal display sizes.
Yes, in supporting browsers. For maximum compatibility, use the <picture> element: <picture><source srcset="image.avif" type="image/avif"><source srcset="image.webp" type="image/webp"><img src="image.png" alt="..."></picture>. This serves AVIF to Chrome/Firefox/Safari 16.4+ users, WebP to older Safari and other browsers, and PNG as the final fallback for very old browsers. For internal tools or apps where you control the browser, you can use <img src="image.avif"> directly.
For logos and icons, use "Very High" quality (80) or "High" (60). Logos often contain flat colours with sharp edges — AVIF's block-based compression can sometimes introduce subtle softening at edges at lower quality settings, particularly on fine text and sharp geometric shapes. At quality 80, logos typically look identical to the PNG source. At quality 60, most logos look excellent at web display sizes (under 400px). Avoid quality 40 or lower for logos and icons.
Yes. All uploads use TLS 1.3 encryption. Files are processed in isolated server containers and permanently deleted within 24 hours. No watermarks are added. We never view, share, or retain your image files. No account is required.