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100% Client-Side In-Browser Processing (Your images never touch any server)

Web Image Converter & Compressor (WebP, PNG, JPG, AVIF)

Compress heavy assets, switch formats, and accelerate web page load times while preserving visual fidelity.

Drag & drop an image here or click to browse

Supports PNG, JPG, JPEG, WebP, AVIF, and BMP (unlimited file size, zero network uploads).

85%

Why Convert Images to WebP and AVIF for Modern Web Engineering?

Asset image compression is the single most influential metric determining page speed scores and Google Core Web Vitals (specifically LCP — Largest Contentful Paint). Uncompressed raw PNG or camera JPEG assets often exceed 3 MB to 8 MB, introducing severe network waterfalls on mobile networks and driving up user bounce rates.

1. Format Breakdown: PNG vs JPEG vs WebP vs AVIF

  • WebP (Google): Delivers lossy and lossless compression up to 35% more compact than traditional JPEG with native alpha transparency support, supported across over 98% of global web browsers.
  • AVIF (Alliance for Open Media): Derived from the AV1 video codec, AVIF provides the highest compression efficiency available today, reducing payloads by up to 50% compared to JPEG with minimal visual degradation.
  • PNG: Reserved strictly for user interface screenshots, pixel art, and graphic assets demanding flawless lossless reproduction with zero compression artifacts.
  • JPEG: Legacy universal standard for photography without alpha channel requirements.

2. Zero-Trust Client-Side Privacy Architecture

Standard online converters upload confidential screenshots, personal photos, or corporate assets to remote server queues. With Caixa do Dev, all decoding, canvas resampling, bicubic interpolation, and compression happen strictly inside your local web browser memory via HTML5 Canvas. Your assets never traverse the network, ensuring complete confidentiality.