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Image Compressor

Compress JPEG, PNG, and WebP images to reduce file size without visible quality loss.

Original: ·
Smaller fileBetter quality

Original:

Compressed:

Saved ( reduction) No further reduction possible at this quality

How It Works

Upload an image and choose a quality level (1–100). The compressor reduces file size and shows you the before/after comparison with exact size savings.

**Image Compressor — Reduce File Size, Keep Visual Quality**

Large image files slow down websites and waste storage. Our Image Compressor reduces image file size significantly while maintaining acceptable visual quality — using a range of quality settings to suit different use cases.

**How Image Compression Works**

**JPEG Compression (Lossy)**
JPEG uses DCT (Discrete Cosine Transform) to compress image data. At quality 85, most people cannot distinguish a JPEG from the uncompressed original. At quality 60, compression is significant and small artefacts may appear. At quality below 40, artefacts become visible.

**PNG Compression (Lossless)**
PNG uses lossless compression — no data is discarded. The file size is reduced by finding patterns in pixel data. PNG compression cannot match JPEG for photographs but preserves quality 100%.

**WebP**
Google's WebP format supports both lossy and lossless compression, typically achieving 25–34% smaller files than JPEG at equivalent quality. Supported by all modern browsers.

**Typical Compression Results**

| Image Type | Original | Compressed (Q=85) | Savings |
|---|---|---|---|
| Photo (JPEG) | 2.5 MB | 350 KB | 86% |
| Screenshot (PNG) | 800 KB | 250 KB | 69% |
| Logo (PNG) | 150 KB | 45 KB | 70% |

**Why Image Optimisation Matters for the Web**

Images account for 50–70% of average web page weight. Google's Core Web Vitals include Largest Contentful Paint (LCP), which is often dominated by the hero image. Reducing image size directly improves LCP score, which affects SEO rankings.

Google recommends serving images in WebP or AVIF format and ensuring no image is larger than 200KB for above-the-fold content.

Frequently Asked Questions

For web use, quality 75–85 is the sweet spot — significant size reduction with minimal visible quality loss. For print, use 90+.
Lossy compression (JPEG) permanently removes some data for smaller files. Lossless (PNG) removes no data and the original can be perfectly reconstructed.
No. All compression is done locally in your browser using Canvas API. Your images never leave your device.
WebP typically achieves 25–34% smaller files than JPEG at the same quality. Use WebP for web images if your target browsers support it (all modern browsers do).
Yes. The format converter option lets you save any image as JPEG, PNG, or WebP regardless of the input format.