PNG to AVIF Converter

Convert PNG images to AVIF entirely in your browser. Batch convert, choose quality, download instantly. Free, no signup, files never uploaded.

100% in your browser — files never uploaded.
    Postcrest — full AI image suite

    Need more than a converter? AI background removal, upscale, edit and generate — one workspace.

    Get the AI toolsSee pricing

    How to use the PNG to AVIF Converter

    1. 1
      Drop your PNG file(s)
      Drag PNG files onto the upload zone or click to pick. Batch is fine.
    2. 2
      Adjust settings
      Pick quality and options as needed. Higher quality = larger file.
    3. 3
      Click Convert
      Conversion runs in your browser via the Canvas API — no upload.
    4. 4
      Download
      Click Download on any result. Originals are unchanged on your device.

    About PNG → AVIF

    PNG and AVIF are both common image formats. PNG originated as a lossless format; AVIF is the newest format and offers the best compression-vs-quality ratio of any widely-supported format today.

    This tool decodes PNG input using the browser's image decoder, redraws it onto a 2D Canvas, then re-encodes via canvas.toBlob() in the target format. No server roundtrip, no upload, no watermark.

    Frequently asked questions

    Is this free?
    Yes — no signup, no watermarks, no file-count limits.
    Are files uploaded?
    No. Conversion runs entirely in your browser via the Canvas API.
    Maximum file size?
    Limited only by your device's memory. Most laptops handle 50+ MB inputs.
    Batch convert?
    Yes — drop multiple files at once or pick a folder in the file picker.
    Mobile?
    Yes — works in iOS Safari and Android Chrome.

    Need more than free tools? Get Postcrest's full AI image suite.

    AI background removal, AI upscaling, AI image editor and AI photoshoot — every leading model in one workspace.

    AI Image Generator
    Every leading model — Flux, Nano Banana, Seedream, GPT-Image, SDXL.
    AI Image Editor
    Inpaint, outpaint, object removal — describe the edit, AI applies it.
    AI Background Remover
    Pixel-perfect cutouts in seconds — transparent PNG or any new scene.
    AI Image Upscaler
    Upscale to 4K, face-aware, print-ready, watermark-free.
    Get started — access every AI tool
    50% off your first 2 months. Cancel anytime.