Image Compressor
Compress JPG, PNG, WebP in your browser. Nothing uploaded.
Compress JPG, PNG, WebP in your browser. Nothing uploaded.
Image compression reduces file size by removing data the human eye is unlikely to notice. Lossy compression (JPEG, WebP) permanently discards detail, achieving much smaller files — typical web JPEGs at 80% quality are 70-90% smaller than uncompressed bitmaps with no visible loss. Lossless compression (PNG) preserves every pixel but compresses less aggressively, best for screenshots, logos, and images with text.
This tool runs entirely in your browser using the Canvas API — your images never leave your device. For photos, choose JPEG at 75-85% quality. For graphics with sharp edges or transparency, use PNG. WebP is a modern alternative that typically produces smaller files than both, and is supported by all modern browsers.
Compression matters for web performance: every 100KB shaved off an image improves page load time and Core Web Vitals scores, directly affecting SEO rankings. Google's PageSpeed Insights specifically flags oversized images, and mobile users on slow connections benefit most.
This tool in other languages:
Français:
Compresseur d'image
Español:
Compresor de imagen
Deutsch:
Bildkomprimierer
Português:
Compressor de imagem
日本語:
画像圧縮ツール
中文:
图片压缩工具
한국어:
이미지 압축기
العربية:
ضاغط الصور
Drag and drop a JPG, PNG, or WebP image onto the page. Compression happens entirely in your browser using the Canvas API — nothing leaves your device. Pick output format, adjust quality, and download. Typical size reduction is 50-90% depending on the source image.
JPEG — best for photos. Lossy compression, no transparency, widely supported. PNG — best for graphics with sharp edges (logos, icons, screenshots). Lossless, supports transparency. WebP — newer format, smaller than both for similar quality, supports transparency. Use WebP in modern browsers with JPEG fallback for old IE.
For JPEG/WebP, 75-85% is the sweet spot — visually indistinguishable from the original for most images, but 60-80% smaller. Below 60%, compression artifacts start showing. PNG is lossless by default, so quality doesn't apply — savings come from color reduction and pixel optimization.
With this tool, yes — compression is 100% client-side via the Canvas API. The image data never leaves your browser. You can safely compress screenshots with sensitive info, client work, or personal photos. Verify by checking your browser's network tab: no upload requests fire.
PNG compression with color reduction can introduce banding on gradients. If the source is a photo, use JPEG or WebP instead — PNG is wrong for photos. If it's a screenshot with text and you need transparency, try a higher color depth or switch to WebP (supports transparency and is much smaller).