PNG → AVIF

PNG to AVIF Converter

Convert PNG files (released 1996, Lossless) to AVIF (Lossless + Lossy (AV1-based), typically 30–50% smaller than WebP at the same quality). Runs in your browser — no upload, no signup.

4.8/5

Based on 12,431+ conversions delivered

From
To

AVIF is the most space-efficient image format in wide use, and converting PNG to AVIF can shrink a heavy PNG dramatically while keeping its transparency. In our sample set, PNG files came out about 89% smaller as AVIF. It's the right move when page weight matters and your audience is on modern browsers — AVIF is supported in current Chrome, Firefox, Safari and Edge. Keep a PNG or WebP fallback only for older clients. The conversion runs locally in your browser, so even large source files never get uploaded.

For developers

Looking to programmatically convert PNG to AVIF?

Same engine, available as a JSON API. Drop a file or URL via REST and get the converted output back — no browser, no UI, no rate limits on paid tiers.

  • Sub-second response on common pairs

  • Webhook delivery for batch jobs

  • 100+ format pairs supported

Get free API access
Side-by-side

PNG vs AVIF — side-by-side

The numbers and capabilities at a glance, so you know what you're trading.

PNG

Year released
1996
Compression
Lossless
Transparency
Yes (full alpha)
Animation
No (use APNG / GIF / WebP)
Browser support
Universal (every browser since the 90s)
Best for
Screenshots, icons, logos, any image with transparency

AVIF

Year released
2019 (AOMedia)
Compression
Lossless + Lossy (AV1-based)
Transparency
Yes
Animation
Yes
Browser support
Modern browsers (~90% since 2023)
Best for
Bandwidth-critical pages with modern audiences
Convert any image to AVIF
Sample results

Real PNG → AVIF file sizes

We ran a fixed set of sample images through this exact converter so you can see the typical size impact before converting your own files.

Sample imagePNG sizeAVIF sizeChange
Photo174.4 KB17.4 KB-90% smaller
Screenshot / UI488 B556 B+14% larger
Logo / transparency6.8 KB2.2 KB-67% smaller

Measured on a 256×256 sample set with this converter on 2026-05-28. Real-world files vary with resolution, colour and content.

Heads up

Heads up before converting PNG → AVIF

What changes — and what your conversion will cost — based on how PNG and AVIF differ.

Older clients may not render AVIF

AVIF support: Modern browsers (~90% since 2023). Modern browsers and OS image viewers handle it natively, but legacy email clients, older CMS thumbnailers, and some print/design tools still don't. Confirm the downstream consumers in your pipeline accept AVIF before swapping at scale, or ship a PNG fallback for the long tail.

Chroma subsampling kicks in

PNG stores full-resolution colour channels. AVIF's default lossy mode subsamples chroma (typically 4:2:0) — half the colour information thrown away to save bytes. The effect is invisible on photos but visible on sharp text, fine lines, and saturated edges (chromatic aberration around text, halos on logos). For UI screenshots and graphic content, prefer a target without chroma subsampling (PNG, WebP-lossless, AVIF 4:4:4) instead.

Best practice

Best practices for PNG → AVIF

Concrete settings to pick before you convert PNG to AVIF.

  • Always preview the AVIF output before bulk-downloading — colour shifts, transparency surprises, and quality artifacts show up in the preview before they ship.
  • Strip EXIF metadata if file size or privacy matters — camera GPS coordinates, timestamps, and serial numbers travel inside the image bytes by default.
  • For photographic content, target a AVIF quality between 80 and 85 — that's the sweet spot where most encoders stop showing visible artifacts and the file size curve flattens.
  • Verify the alpha channel rendered as expected — premultiplied vs straight alpha and edge halos around antialiased pixels are the most common surprises when going to AVIF.
  • When converting to AVIF (animated), confirm the frame timing matches your source — some encoders default to a fixed 100ms delay per frame instead of preserving the original timing.
  • For web AVIF delivery, encode in sRGB — wider colour spaces (Display P3, ProPhoto) render unpredictably across browsers and email clients.
When to skip

When NOT to convert PNG → AVIF

Honest cases where this conversion is the wrong call — pick a different format or keep your PNG source.

  • Skip if your audience uses legacy browsers

    AVIF doesn't render on every old browser, email client, or built-in OS viewer. If your traffic includes IE11, legacy Outlook, or older Android WebViews, stay on PNG (or a universal format like JPEG/PNG) — or ship AVIF alongside a fallback via the HTML <picture> element.

  • Skip if the file is bound for print

    AVIF is a delivery-grade web format. Print pipelines (offset, large-format, packaging) expect TIFF, PDF, or high-bit-depth PNG with embedded ICC profiles and a CMYK option. Converting PNG to AVIF for a print job will likely fail prepress checks — keep the original or convert to a print-friendly format instead.

Deep dive

The importance of a good image conversion

Why getting PNG → AVIF right matters more than you think.

FAQ

Frequently asked

The basics everyone asks before dropping a file.

Convert PNG to other formats

Convert other formats to AVIF