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Compress & Convert

Reduce file size or convert between JPEG, WebP, AVIF & PNG

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COMBb2's Image Compressor reduces file sizes by up to 90% while preserving visual quality, and converts between JPEG, WebP, AVIF, and PNG formats. Using modern browser codecs, it delivers professional-grade compression without uploading your images to any server. Perfect for optimizing images for web, email, or storage.

Common Use Cases

  • Web optimization
    Reduce image sizes for faster page loads and better Core Web Vitals scores.
  • Email attachments
    Compress photos below email size limits without visible quality loss.
  • Storage savings
    Shrink photo libraries and archives to free up disk space.
  • Format conversion
    Convert between JPEG, PNG, WebP, and AVIF for compatibility or efficiency.
  • Social media uploads
    Optimize images to meet platform size requirements without quality degradation.

How It Works

The compressor uses your browser's built-in encoding engines for JPEG, WebP, AVIF, and PNG. You control the quality slider to balance file size against visual fidelity. The tool shows real-time size estimates and lets you compare original vs. compressed quality before downloading.

Why Privacy Matters Here

Online compressors like TinyPNG, Squoosh, and iLoveIMG process your images on their servers. If you're compressing business documents, client photos, or screenshots containing sensitive information, that data passes through third-party infrastructure. COMBb2 compresses everything locally in your browser - nothing is uploaded.

Frequently Asked Questions

Which format should I choose for the smallest file size?+
AVIF produces the smallest files at equivalent quality, followed by WebP, then JPEG. PNG is lossless and produces the largest files. For web use, WebP offers the best balance of size, quality, and browser support. AVIF is newer and not yet supported everywhere.
How much can I compress without visible quality loss?+
For JPEG and WebP, quality settings of 75-85% typically produce files 60-80% smaller with minimal visible difference. Below 60%, compression artifacts become noticeable, especially in areas with gradients or fine detail.
Does compression remove EXIF metadata?+
It depends on the output format and browser implementation. JPEG typically preserves EXIF data, while WebP and AVIF may strip it. If you need to explicitly remove metadata for privacy, use the Strip Metadata tool.
Can I compress PNG files without losing transparency?+
Yes. Choose PNG as the output format to maintain transparency. WebP and AVIF also support transparency. JPEG does not support transparency and will replace transparent areas with white.
Are my images uploaded to compress them?+
No. Compression happens entirely in your browser using built-in encoding APIs. Your files never leave your device.

Related Tools

ResizeHEIC ConverterStrip Metadata