Convert PNG to AVIF Online — 40–60% Smaller, Next-Gen Compression
40–60% smaller than PNG with full transparency. Modern replacement for heavy PNGs.
Drop up to 50 files at once — no install, no sign-up required.
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How it works
- 1 · Drop your files
Drag & drop or choose PNG files. No account required—paid plans unlock bigger batches, higher limits, and priority queues.
- 2 · We convert securely
Processed on our dedicated servers. Encrypted in transit & at rest. Metadata stripped by default. We never store filenames—only file types & sizes for accounting. We never train AI models on uploads.
- 3 · Download & auto-delete
Grab your AVIF files in seconds. Files delete automatically after 1 hour. Delete anytime after downloading with one click.
PNG (Portable Network Graphics) provides lossless compression with full alpha channel transparency, making it the go-to format for graphics, screenshots, and images requiring pixel-perfect fidelity. Created in 1996 as a patent-free GIF alternative, PNG uses DEFLATE compression and supports both indexed color (PNG-8) and truecolor with alpha (PNG-24/32). Files are 3-10× larger than equivalent JPEGs but preserve every pixel exactly.
Learn more: PNG on Wikipedia
PNG is universally supported and ideal for logos, UI elements, diagrams, and any content where transparency or lossless editing matters. For photographic content without transparency needs, JPEG typically offers better compression efficiency.
AVIF (AV1 Image File Format) leverages the AV1 video codec to deliver next-generation compression—typically 50% smaller than JPEG at equivalent quality, with support for HDR, wide color gamut, and both lossy and lossless compression. Standardized by the Alliance for Open Media in 2019, AVIF offers 10-bit and 12-bit color depth plus full alpha transparency. Encoding is slower than JPEG or WebP, but visual quality per byte is exceptional.
Authoritative reference: AVIF Specification (AOMedia)
AVIF is ideal for modern web delivery where cutting-edge compression and HDR support matter. Browser adoption reached critical mass in 2021-2023, with Chrome 85+, Firefox 93+, and Safari 16.4+ now supporting AVIF natively. Encoding is 2-3× slower than WebP, but the compression gains typically justify the extra CPU time for server-side batch processing. For maximum compatibility, serve AVIF with WebP and JPG fallbacks using <picture> elements.
Frequently Asked Questions
Why convert PNG to AVIF? What's the benefit?
AVIF delivers 40-60% smaller files than PNG with identical visual quality, making it ideal for modern web delivery:
- Faster page loads—40-60% smaller files mean 40-60% faster loading (critical for mobile/3G)
- Lower bandwidth costs—serve 2-3× more images with the same CDN budget
- Better Core Web Vitals—smaller images improve LCP (Largest Contentful Paint) for SEO
- Transparency support—AVIF preserves PNG's alpha channel (unlike JPEG)
- HDR support—10-bit/12-bit color depth (PNG is 8-bit)
- Excellent browser support—92% global (Chrome 85+, Firefox 93+, Safari 16.4+, Edge 121+)
Use AVIF for modern websites, e-commerce, blogs, and progressive web apps. Keep PNG for editing workflows, print, archival, or legacy systems requiring 100% compatibility.
How much will my file size shrink?
Typically 40-60% smaller (depending on image content). Examples:
- 4 MB PNG → 1.6-2.4 MB AVIF (40-60% reduction)
- 10 MB PNG → 4-6 MB AVIF
- 25 MB PNG → 10-15 MB AVIF
AVIF compression efficiency depends on image content:
- Photos/gradients—50-60% reduction (AVIF excels at smooth transitions)
- Graphics/text—40-50% reduction (sharp edges compress less efficiently)
- Screenshots/UI—40-50% reduction (text + solid colors)
PNG uses 1996 Deflate compression. AVIF uses 2018 AV1 (same codec as Netflix 4K). The efficiency difference is massive.
Is PNG to AVIF lossy or lossless?
Lossless—we preserve perfect quality. PNG is a lossless format, so we use lossless AVIF to maintain that quality:
- No quality loss: Every pixel is preserved exactly as in your original PNG
- Still smaller: Lossless AVIF is typically 30-50% smaller than PNG
- Full transparency: Alpha channel preserved with full fidelity
Convert.FAST is optimized for quality. For maximum compression, our upcoming Compress.FAST service will offer best-in-class lossy optimization with imperceptible quality loss.
What happens to transparency?
Fully preserved. AVIF has excellent alpha channel support (one of its killer features). Your PNG's transparency (logos, cutouts, UI elements) will look identical in AVIF:
- Full 8-bit alpha channel (0-255 opacity levels)
- Smooth anti-aliased edges (no jagged transparency)
- Compositing over any background (just like PNG)
Unlike JPEG (no transparency), AVIF compresses transparent PNGs 40-60% smaller while keeping perfect transparency. This makes AVIF ideal for logos, icons, UI elements, and cutout photos. Need broader browser support? Try our PNG to WebP converter for 93% compatibility with 30-50% smaller files and full transparency.
What are the limits for this converter?
| Tier | Max File Size | Max Files/Batch | Parallel Processing |
|---|---|---|---|
| Free | 25 MB | 50 files | 3 at once |
| Pro | 200 MB | 200 files | 6 at once |
| Business | 1024 MB | 1000 files | 10 at once |
Note: File size limits are specific to this converter. Batch and parallel processing limits apply to all images converters site-wide. See all converter limits →
How are credits calculated for this conversion?
Cost: 1 credit per 25 MB
How it works:
- Files up to 25 MB: 1 credit (minimum)
- 26-50 MB: 2 credits
- 51-75 MB: 3 credits
- 76-100 MB: 4 credits
- Over 1000 MB: 40 credits (maximum cap)
Example: A 5 MB image = 1 credit. A 95 MB image = 4 credits.
Why per-megabyte? Larger files require more resources (processing, bandwidth, storage).
What are my daily and monthly credit limits?
Credit allocations vary by account tier:
| Tier | Daily Limit | Monthly Limit |
|---|---|---|
| Free | 50 credits/day | — |
| Pro | — | 10,000 credits/month |
| Business | — | 30,000 credits/month |
Daily credits (Free tier, including guests) reset every day at midnight UTC. Monthly credits (Pro & Business) reset on your billing cycle date.
Note: With 1 credit per 25 MB, images under 25 MB cost 1 credit each. Pro users can convert 10,000 images per month.
Answers at a Glance
Quick answers to common questions.
- Are my files secure?
- How long do you keep my files?
- What metadata do you keep?
- What happens after I drop a file?
- Why are conversions so fast?
- How do you measure performance?
- What are the exact limits for each plan?
- Can I process files in bulk?
- Why did my file fail to convert?
- Do you use my files to train AI?
Choose Your Plan
Limits shown for PNG to AVIF conversion. One subscription unlocks the entire Tools.FAST Network. Plans cover Convert.FAST, Compress.FAST, PDF.FAST (soon), and all future tools.
Free
For occasional personal use
- 25 MB per file
- 50 files per batch
- 3 parallel conversions
- 50 credits/day
- Standard priority
- Email support
No sign-up required. Create an account for your own credit pool.
Pro
For independent work
- 200 MB per file
- 200 files per batch
- 6 parallel conversions
- 10,000 credits/month across Tools.FAST
- High priority
- Email & chat support
- One subscription for the entire Tools.FAST network
Business
For production scale
- 1 GB per file
- 1000 files per batch
- 10 parallel conversions
- 30,000 credits/month across Tools.FAST
- Add seats to invite team members
- Highest priority
- Priority email & chat support
- One subscription for the entire Tools.FAST network
How Credits Work
- Usually 1 credit per conversion. Exact cost shown before you start.
- Credits refresh monthly on your billing cycle.
- Unused credits roll over, capped at your plan's monthly amount.
- One subscription, all sites. Works across Convert.FAST, Compress.FAST, and future tools.
What's New in PNG to AVIF
Latest improvements to this converter
Initial launch of PNG to AVIF converter with next-generation compression and full transparency preservation.