How do I reduce an image file size without losing visible quality?
Image compression comes in two forms:
- Lossless — removes metadata and redundant data without touching pixel values. The image is bit-for-bit identical after decompression.
- Lossy — discards some pixel data that the human eye is unlikely to notice. Smaller file size, but with some quality reduction at aggressive settings.
For web images, a 70–85% quality JPEG is often indistinguishable from the original at normal viewing sizes, while being 3–5x smaller. PNG compression is always lossless but can still be significantly reduced by removing metadata.
Practical size targets:
- Hero images: under 200KB
- Product or content images: under 100KB
- Thumbnails: under 30KB
The Image Compressor handles JPEG, PNG, and WebP with adjustable quality settings — all processing happens in the browser, no file is uploaded to a server.
Which image format should I use for the web?
The right format depends on the image content:
| Format | Best for | Transparency | Animation |
|---|---|---|---|
| JPEG | Photos, complex gradients | No | No |
| PNG | Screenshots, logos, text on images | Yes | No |
| WebP | Modern replacement for both JPEG and PNG | Yes | Yes |
| SVG | Icons, illustrations, logos | Yes | Yes |
| GIF | Simple animations (now largely replaced by WebP) | Yes | Yes |
The Format Converter converts between JPEG, PNG, WebP, and GIF in the browser — useful for batch conversions before deployment.
How do I optimize an SVG file?
SVG files exported from design tools (Figma, Illustrator, Inkscape) contain significant amounts of unnecessary data:
- Editor metadata and comments
- Hidden layers and invisible elements
- Unnecessary group nesting
- Redundant attributes and default values
- Non-optimized path data (excessive decimal precision, redundant commands)
A typical SVG from Figma can be reduced by 30–70% with no visual change. Smaller SVGs load faster, render faster, and are easier to maintain in code.
The SVG Optimizer runs the same transformations as the SVGO library — paste your SVG, get back a clean, minimal version ready for production.
Summary
Image weight is one of the largest contributors to slow page loads. Compression reduces file size within a format, format conversion to WebP reduces size further, and SVG optimization removes editor debris from vector files. The three tools above run entirely in the browser — no account, no server upload.