Image Compressor
Compress JPG, PNG, and WebP images instantly in your browser. Nothing is uploaded — see before/after sizes, tweak quality, and download individually or as a ZIP.
82%
Smallest file
Best quality
82% is the sweet spot — visually indistinguishable from the original for most images.
Caps the longest edge while preserving aspect ratio. Often the biggest factor in reducing file size.
Drop images here or click to browse
JPG, PNG, WebP — multiple files supported
Never uploaded — processed in your browserShare this free tool
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How to use this tool
- Adjust quality and max dimension settings if needed. 82% quality with no resize is a good starting point for most images.
- Drop your images into the box or click to browse. Multiple files are supported — they all compress at once.
- See the before and after file sizes for each image. Download files individually with the Save button, or grab everything as a ZIP.
- If you want to try different settings, adjust the sliders and click Re-compress — no need to re-upload.
Frequently Asked Questions
No. This tool runs entirely in your browser using the HTML5 Canvas API. Your images are never sent to any server, stored anywhere, or seen by anyone. Everything happens locally on your device.
For most web use, 75–85% gives the best balance of file size and visual quality. At the default 82%, most people cannot tell the difference from the original on screen. For print or archival purposes, stay at 90%+. For thumbnails or social media previews where file size matters more, 60–70% is acceptable.
PNG is a lossless format and cannot be compressed as aggressively as JPG. The savings are usually smaller. If your PNG does not have a transparent background, consider converting it to WebP or JPG using the Image Converter tool — you will typically see much larger reductions.
It resizes your image so neither the width nor height exceeds the chosen value, while keeping the original aspect ratio. Resizing is often the single biggest factor in reducing file size — more impactful than quality reduction alone. A 4000px wide photo has far more data than a 1920px version even at the same quality.
Yes — drop multiple images at once or select several from the file browser. All files are compressed simultaneously. You can download them individually with the Save button next to each file, or grab the full batch as a ZIP.