PixFlow · Convert

PNG to WebP Converter

Reduce the file size of your graphics without losing the transparent background. WebP handles Alpha transparency perfectly for ultra-fast sites.

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Drag images (JPG, PNG, HEIC) or Paste (Ctrl+V)

Formats: JPG, PNG, HEIC, WebP, AVIF, PDF

100% Secure Processing (Client-Side)
01 — Why this tool?

Convert PNG to WebP…

Many think WebP is only useful for photos. That's wrong: WebP perfectly handles alpha transparency, just like PNG, but at often one-third the weight. For a website, that means logos and icons that load two to three times faster, with no visual loss. It's one of the most direct gains on Core Web Vitals — the LCP (Largest Contentful Paint) mechanically drops when graphic assets get lighter, and Google rewards this improvement in its rankings. WebP is now supported by all modern browsers (Chrome, Firefox, Safari, Edge, Opera, more than 97% of global users), so there's no longer any reason to keep your PNGs as-is for the web. Our converter fully preserves transparency and lets you set the quality level to find the right balance between visual fidelity and final weight.

02 — Benefits

What you gain by using PixFlow.

  • 01Perfect transparency preservation (alpha channel) — your logos stay on transparent background
  • 02Weight reduced by 25-35% at equivalent quality, up to 50% on simple graphics
  • 03Direct LCP and Core Web Vitals boost, meaning better Google ranking
  • 04Modern compatibility guaranteed: every modern browser supports WebP natively
  • 05CDN bandwidth savings: monthly bill drops proportionally to weight gains
  • 06Local batch processing: optimize an entire asset folder in a single operation
03 — Use cases

Six scenarios where it changes everything.

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Optimizing the logos and icons of a WordPress site to gain several hundred milliseconds on initial load

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Preparing assets for a React, Vue, or Next.js web application where every kilobyte counts for First Contentful Paint

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Converting a transparent PNG illustration kit for a marketplace or e-commerce product page without touching transparency

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Reducing the weight of annotated screenshots (Snagit, Loom) destined for product documentation or a technical article

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Preparing HTML newsletter visuals to respect email weight best practices while keeping transparency

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Optimizing UI assets for a SaaS web app where load time directly impacts conversion

04 — How it works

How to convert PNG to lightweight WebP

  1. 01Drag your .png files into the upload area.
  2. 02Transparency is automatically detected and preserved.
  3. 03Adjust quality to find the right balance between size and fidelity.
  4. 04Download the optimized WebPs, ready for the web.
05 — Frequently asked questions

Everything that deserves a clear answer.

    Is my PNG transparency preserved?+

    Yes, WebP fully supports transparency (alpha channel) like PNG.

    How much is file size reduced?+

    Typically 25-35% at equivalent quality, up to 50% on simple graphics.

    Do all browsers support WebP?+

    Yes, all modern browsers (Chrome, Firefox, Safari, Edge, Opera), covering 97%+ of global users.

    Is the conversion secure?+

    100% secure. Everything happens in your browser, no image sent to any server.

PixFlow.
L'image, sereinement.

Vingt-cinq outils image gratuits, conçus pour les indépendants, les créateurs et les équipes qui ne veulent pas envoyer leurs visuels à un cloud inconnu.

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