Image Compressor Online

Reduce image file sizes without sacrificing visual quality. Supports JPEG, PNG, and WebP formats with adjustable quality settings. Whether you need to optimize images for a website, shrink photos for email attachments, or prepare images for social media uploads, this tool handles it all instantly in your browser. No file size limits, no watermarks, and no sign-up required. Drop multiple images at once to use batch mode — compress your entire folder and download everything as a ZIP. Your images are never uploaded to any server — all compression happens locally using the Canvas API.

• 100% private — your images never leave your device, unlike cloud-based compressors that upload your files to remote servers.
• No file size limits or daily usage caps. Compress as many images as you want, as often as you want.
• Batch mode — drop multiple images at once, compress them all with one click, and download as a ZIP. No other free tool does this without a sign-up.
• Adjustable quality slider lets you find the perfect balance between file size and visual fidelity.
• Works on any device — desktop, tablet, or phone. No software installation needed.
• Instant results — compression happens in milliseconds, not minutes.

• 💡For JPEG images, a quality setting of 75-85% typically reduces file size by 50-70% with minimal visible difference.
• 💡PNG images with large areas of solid color compress better than photographic PNGs. Consider converting photos to JPEG first.
• 💡WebP format generally produces smaller files than JPEG at the same quality level — try converting if your target supports it.
• 💡Compress images before resizing, not after. Starting with the highest quality source gives the best results.