Will compression ruin my image quality?

Not visibly at sensible settings. Use the comparison slider to zoom into edges and gradients — if you see artifacts, raise the quality slider and re-compress in one click.

Which compresses better — JPG, PNG or WebP?

WebP usually delivers the smallest files at equal quality, followed by JPG. PNG is lossless and best reserved for screenshots, logos and images with text.

Why is my compressed PNG still large?

PNG is lossless, so savings are modest for photos. For photographic images, switch the output to JPG or WebP for 70–90% reductions.

Is it safe to compress private documents here?

Yes. Compression runs entirely on your device in a Web Worker. Nothing is transmitted, logged or stored — close the tab and everything is gone.

Smart Image Compressor

Shrink JPG, PNG and WebP files with a live before/after comparison slider and target-size presets like “under 200 KB”.

Processed locally — your images never leave this device

Large images slow down websites, blow through email attachment limits and eat cloud storage. The Smart Image Compressor shrinks JPG, PNG and WebP files dramatically — often 70–90% smaller — while a live side-by-side slider lets you verify the quality before you download anything.

Set a target like “under 200 KB” for government forms and job portals, or fine-tune with the quality slider. Compression runs locally in a background worker, so even multi-megabyte photos process in seconds without ever being uploaded.

How to use this tool

Drop in a JPG, PNG or WebP image (or paste with Ctrl+V).
Pick a target-size preset — for example “Under 200 KB” — or drag the quality slider.
Watch the savings indicator show the new size and percentage saved.
Drag the comparison slider to inspect original vs compressed detail.
Download the compressed image when you're happy with the balance.

Technical specifications

Input formats	JPG, PNG, WebP
Output formats	Matches input (WebP/JPG for maximum savings)
Target presets	Under 100 KB, 200 KB, 500 KB, 1 MB
Engine	Multi-pass compression in a Web Worker
Preview	Interactive before/after comparison slider
Privacy	100% client-side — images never leave your device
Browser compatibility	Chrome, Edge, Firefox, Safari 16+ (desktop & mobile)

Frequently asked questions

Choose the “Under 200 KB” preset. The compressor automatically lowers quality and resolution in passes until the file fits the target — ideal for government forms, visa portals and job applications with strict upload limits.