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High-Fidelity Image Compressor

Reduce JPG, PNG, and WebP file size while keeping visual quality. Batch compress up to 50 images — 100% in your browser.

Processed on your device — files never leave your browser.

Maximum 50 images
85%
50–100: JPEG/WebP quality; PNG uses OxiPNG (level 1–4, lossless, keeps transparency)
Leave empty to keep original size; resize if longest side exceeds this

How High-Fidelity Compression Works

Images are re-encoded with carefully tuned quality settings. If compression would increase file size, the original file is kept unchanged.

  1. Add one or more images by clicking Add Files or drag and drop.
  2. Set quality (default 85 for high fidelity), output format, and optional max edge length.
  3. Click Compress to process all files and see before/after sizes.
  4. Download individual files or all results as a ZIP archive.
All processing happens locally in your browser — your images are never uploaded to any server.

Frequently Asked Questions

How does high-fidelity compression work?

Images are re-encoded with tuned quality settings. If a smaller file cannot be produced, the original is kept so you never get a larger result by mistake.

What quality setting should I use?

Default 85 balances size and visual quality for JPEG and WebP. PNG uses lossless OxiPNG. Lower values save more space; raise quality for photos with fine detail.

Are my images uploaded?

No. Compression runs locally in your browser. Your files never leave your device.

Which formats are supported?

JPG, PNG, WebP, GIF (first frame), BMP, and AVIF. You can keep the original format or choose a specific output format for the batch.

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