Compress Image Online — Free Image Compressor

Reduce image file size without visible quality loss. Supports JPG, PNG and WebP. Free, browser-based, no upload.

Processed entirely in your browser — never leaves your device

No software needed — works in any modern browser

Fast — most operations complete in under a second

Files up to 100MB supported

Edit tools

Compress Image Resize Image Crop Image Rotate Image Flip Image Grayscale Image Invert Image Add Watermark Remove EXIF Data Blur Image Add Border Merge Images EXIF Viewer

✅Processed entirely in your browser. Your file never leaves your device — no upload, no server, complete privacy.

Drag & drop your image here or

Large image files slow down websites, fill up storage, and hit email attachment limits. This tool compresses your images directly in the browser, reducing file size by up to 90% for most photos while maintaining visual quality. The compression targets a maximum output size of 1MB at up to 1920px on the longest side — ideal for web use, email, and sharing. Your original file is never uploaded to any server.

How to use

Click 'Choose Image' and select the JPG, PNG, or WebP image you want to compress.
Click 'Compress' and wait while the image is optimised in your browser.
Download the compressed file and compare the size reduction.

FAQ

How much will the file size be reduced?

Compression results vary by image content. Photographic images with many colours typically compress by 60–90%. Images with flat areas of colour (logos, diagrams, screenshots) may compress less. The tool targets a maximum output size of 1MB, so very small images may see minimal size reduction.

Will I notice quality loss in the compressed image?

At the settings used by this tool, quality loss is usually imperceptible for photographic content. The compression uses a high-quality setting that prioritises visual fidelity over maximum size reduction. If you need smaller files, try reducing the image dimensions first using the Resize Image tool.

What image formats are supported?

This tool supports JPEG, PNG, and WebP images up to 100MB. The output format matches the input format — compressing a PNG produces a PNG, compressing a JPG produces a JPG. For cross-format conversion, use the Convert Image tools.

Is the compression lossless or lossy?

The compression applied by this tool is lossy — some image data is discarded to achieve a smaller file size. The quality loss is minimal at the settings used, but it is not pixel-perfect lossless compression. If you need lossless compression, convert your JPEG to PNG (which uses lossless compression) using the Convert Image tools.

Can I compress multiple images at once?

This tool processes one image at a time. For batch compression of many images, consider using a desktop application such as ImageOptim (Mac) or Squoosh CLI. For individual images, simply repeat the process for each file.

Is the compression done in my browser or on a server?

Compression runs entirely in your browser using the browser-image-compression library. Your images are never uploaded to any server. Everything happens locally on your device.