AssetMelt

Drop a folder, or click to choose images

JPEG · PNG · WebP · AVIF · HEIC · SVG · GIF · JXL · TIFF

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Web OptimizedWEBP · max 1920px

Files never uploaded · 100% client-side · I cannot see your photos · Privacy policy

Pipeline ready: PNG → AVIF (any input still accepted)

Free PNG to AVIF converter in your browser

Asset Melt Studio is a PNG to AVIF converter that runs entirely on your device. AVIF often wins on screenshots and illustrations where PNG files balloon. Preview carefully around sharp text — AVIF can soften type at aggressive quality.

Drop one PNG or a whole folder — the pipeline is already set to AVIF using libavif / AV1 stills. That is the PNG to AVIF workflow people search for: convert PNG to AVIF without an upload, then resize, crop, or hit a size budget (when the codec allows) before you download.

Input is not locked to PNG: you can still open JPEG, PNG, WebP, AVIF, HEIC, GIF, and more in the same session. The PNG to AVIF URL simply pre-selects AVIF so png to avif jobs start in one click.

Typical PNG to AVIF result

A phone UI / app dashboard capture exported as PNG.

~93% smaller

Smartphone showing an app dashboard in a workspace
Smartphone showing an app dashboard in a workspace
PNG · 2.0 MBAVIF · 150 KB

Before · PNG2.0 MB — Lossless UI capture

After · AVIF150 KB — Mid quality, balanced speed

Illustrative PNG to AVIF on a UI screenshot. Preview text sharpness before you batch — AVIF encode is slower than WebP.

How to use this converter

  1. Step 1

    Open this PNG to AVIF page

    You are already on the PNG to AVIF converter. Output is pre-selected as AVIF. You can still drop mixed formats — the PNG to AVIF URL is a starting point, not a file-type lock.

  2. Step 2

    Drop PNG files (or a folder)

    Drag PNG images onto the studio, click to choose, or paste. Folder drops queue nested images. Then process — PNG to AVIF encoding runs in Web Workers on this device.

  3. Step 3

    Preview, tweak, download

    Use the before/after scrubber until the PNG to AVIF result looks right. Adjust quality, crop, or resize, then download one AVIF or a ZIP of the batch.

PNG to AVIF at a glance

PNG to AVIF at a glance
TopicPNGAVIF
Typical screenshotLarge lossless PNGOften the smallest modern still
Encode timeFast (Oxipng)Slower (AV1)
TransparencyYesYes
Size budgetSupported on PNGSupported for AVIF
SupportUniversalModern browsers; keep a fallback

Why convert PNG to AVIF

PNG to AVIF is the “smallest still that still looks like a screenshot” path for modern browsers. AVIF (AV1 stills) usually beats WebP on the same source when you can afford a slower encode.

Use PNG to AVIF for LCP-critical graphics once your CDN or `<picture>` stack has a WebP or JPEG fallback. Do not replace a PNG icon set blindly — tiny logos sometimes stay smaller as Oxipng.

Encoding uses libavif in WebAssembly on your machine. Slow AVIF speed settings produce smaller files; fast settings finish sooner.

Typical PNG to AVIF file sizes

Typical PNG to AVIF file sizes
SourceBeforeAfterNote
App screenshot2.1 MB PNG~140 KB AVIFWatch small text
Illustration with alpha900 KB PNG~95 KB AVIFCheck semi-transparent edges
Tiny 32px icon3 KB PNG~2 KB AVIFNot worth a format change

How PNG to AVIF works in Asset Melt

Drop PNGs. Output is AVIF. Optional Reduce palette is a PNG-only trick — it does not apply to AVIF. Use AVIF quality/speed instead.

Alpha is supported. Check hair, glass, and drop shadows in the preview; very low quality can posterize semi-transparent edges.

Size budget works for AVIF. That is often easier than picking a quality number for PNG to AVIF.

When to use PNG to AVIF (and when not to)

Heavy PNG screenshots and product graphics on a site that already serves AVIF.

When WebP is still larger than you want for a hero.

Skip PNG to AVIF for email, older apps, or any host that cannot decode AVIF.

PNG to AVIF quality and settings

Quality 45–60 is a common stills range in libavif-style sliders; trust the preview more than the number. Raise quality if text in a screenshot looks mushy.

Lower AVIF speed (more effort) when the file is a one-off hero.

Keep a WebP sibling via Also export for broader reach.

Do not enable PNG Reduce palette here — you are not emitting PNG.

Privacy while you convert PNG to AVIF

Image processing is 100% client-side in your browser with WebAssembly. Your photos are not uploaded, I cannot see or recover them, and sampled session replay is UI-only and does not include image pixels (media is blocked). The site still sends usage analytics and crash reports — details are on the privacy page. That includes every PNG to AVIF job — the converter never needs your files on a server.

Upload compressors send your bitmap to someone else’s API. Asset Melt keeps png to avif on this device. Session replay, if sampled, is UI-only and does not include image pixels.

Related conversions

Frequently asked questions

Yes. This PNG to AVIF converter runs entirely in your browser. Image processing is 100% client-side in your browser with WebAssembly. Your photos are not uploaded, I cannot see or recover them, and sampled session replay is UI-only and does not include image pixels (media is blocked). The site still sends usage analytics and crash reports — details are on the privacy page.

No. The Studio still opens JPEG, PNG, WebP, AVIF, HEIC, GIF, TIFF, BMP, SVG, JPEG XL, and QOI. The PNG to AVIF URL pre-selects AVIF output for the common PNG workflow, but mixed batches are fine — only the output codec is locked to AVIF until you change Format settings.

Yes. Queue many PNG files (or a folder), keep AVIF as the output, and the Studio encodes in parallel on a worker pool sized to your CPU (up to 4) with live per-file progress, Pause, and Cancel. Pause lets in-flight files finish so you can download what is ready. Optional “ZIP every 25 files” packs numbered ZIPs during encode. There is no 20-image cap; very large PNG to AVIF batches depend on device RAM.

PNG to AVIF output uses libavif / AV1 stills via the same Squoosh-grade @jsquash WebAssembly stack, running locally in a Web Worker. You can still crop, resize, filter, and (for lossy AVIF) set a size budget before download.

Yes. PNG to AVIF conversion is free: no account, no watermark, and no file-count limit. Download one file or a ZIP of the whole queue.

Often on photos and complex screenshots, yes. On tiny flat icons, PNG or WebP can win. Compare with Also export if you need both.

AVIF uses AV1 still encoding, which is heavier than WebP. Asset Melt runs it in a worker so the tab stays usable; Pause if you need to grab finished files mid-batch.

Yes. AVIF can store alpha. Inspect edges at your chosen quality before you ship.