Image Compressor
Reduce JPG, PNG, WebP, and GIF file size in your browser, lossless or lossy, with a quality slider and ZIP download.
Drop images here or click to upload
JPG, PNG, WebP, or GIF (up to 20 files per batch).
How to Use Image Compressor
Every kilobyte your images carry is a kilobyte your users wait for. If you've ever watched a Lighthouse report flag oversized images as the top performance hit, you already know this isn't a cosmetic issue — it's a ranking issue. This tool compresses images directly in your browser. No file size caps. No accounts. No data sent to a server.
Drag up to twenty images into the drop zone or click to browse. Supported formats: JPG, PNG, WebP, and GIF. Choose lossless compression to strip metadata without altering a single pixel — ideal for UI assets and logos. Choose lossy compression to reduce file size more aggressively for photographs where minor detail loss is acceptable.
Adjust the quality slider between 10 and 100. A setting of 75–85 typically produces web-ready images that are indistinguishable from the original at normal viewing distances. Each row shows original size, compressed size, and savings percentage with an individual download button.
Use Download All as ZIP to hand assets to a developer or archive a batch. Pair compression with responsive delivery in your CMS or CDN. All processing uses your device CPU — files never leave your browser, supporting GDPR-friendly workflows.
Frequently Asked Questions
Everything you need to know about Image Compressor
Does this tool upload my images to a server?
No. All compression processing happens locally in your browser using client-side JavaScript. Your images never leave your device, which also means the tool works offline after the page loads.
What is the difference between lossless and lossy compression?
Lossless compression removes redundant encoding data without changing any pixel values — the image is mathematically identical to the original. Lossy compression applies perceptual algorithms that reduce colour data in ways the human eye is least likely to notice, achieving higher compression ratios at the cost of minor detail reduction.
Will compression change my image dimensions or aspect ratio?
No. This tool compresses file size only. Your image width, height, and aspect ratio remain exactly as they were in the original file.
What file formats are supported?
JPG, PNG, WebP, and GIF. For format conversion — such as converting a PNG to WebP — use the Image Converter tool.
What quality setting should I use for web images?
For photographs in blog posts or hero sections, 75–82 typically produces excellent results. For product images where detail matters commercially, 85–90 is a safer range. For UI elements and icons, use lossless mode.
How much file size reduction can I expect?
Typical reductions range from 30–70%. A 1.2MB PNG can often be reduced to under 400KB with no visible quality change. Process additional batches in a second pass if you need more than twenty files at once.
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