Image Compressor

Compress images to reduce file size while preserving quality. Supports JPEG, WebP, and PNG with real-time before/after comparison — all in your browser.

About Image Compressor

Overview

The Image Compressor tool reduces image file sizes while preserving visual quality, all directly in your browser. Similar to tools like Squoosh, it lets you fine-tune compression settings and see the results in real-time with a visual before/after comparison slider. Choose from multiple output formats including JPEG, WebP, and PNG. Adjust quality levels to find the perfect balance between file size and image quality. Optionally reduce image dimensions for even greater compression. The tool is ideal for optimizing images for web, email, social media, or any use case where smaller files are needed.

Features

  • Real-time before/after visual comparison with draggable slider
  • Multiple output formats: JPEG, WebP, and PNG
  • Adjustable quality slider for precise compression control
  • Quick presets for common use cases (web, email, social media)
  • Optional dimension reduction for further compression
  • Live file size comparison showing exact savings
  • Completely browser-based — no server uploads, your data stays private
  • Support for drag & drop, file upload, and clipboard paste

How to Use

  1. Upload an image by clicking "Browse Files", dragging and dropping, or pasting from clipboard (Ctrl+V)
  2. Select an output format (JPEG, WebP, or PNG) or keep the original format
  3. Adjust the quality slider to control compression level — lower values produce smaller files
  4. Optionally enable dimension reduction to compress even further
  5. Use the before/after comparison slider to check visual quality
  6. Click "Download Compressed Image" to save the result

FAQ

Which format produces the smallest file size?

WebP typically produces the smallest files with the best quality-to-size ratio, often 25-35% smaller than JPEG at equivalent visual quality. JPEG is a close second and has universal browser support. PNG is lossless and produces the largest files for photographs.

What quality setting should I use for web images?

For most web images, a quality setting of 75-85% in JPEG or WebP provides an excellent balance of visual quality and file size. Below 60%, compression artifacts become noticeable. For hero images or portfolio work, use 85-95% to preserve more detail.

Will compression make my image look worse?

At moderate quality settings (70-90%), the difference is barely visible to the human eye. The before/after comparison slider lets you check quality in real-time before downloading. Use the slider to find the lowest quality level where the image still looks good to you.

Can I compress PNG images?

PNG is a lossless format, so quality-based compression has limited effect. For best results with PNG images, convert them to WebP or JPEG which support lossy compression. If transparency is needed, WebP supports it while offering much better compression than PNG.