Fast image compression
Canvas-based processing happens locally, helping you optimize images without waiting for server uploads.
Free online image compressor for JPG, PNG & WebP.
Reduce image file sizes, resize large pictures and convert formats directly in your browser. Your selected images stay on your device.
Drop images here
or click to choose JPG, PNG, or WebP files
Multiple files supported • processed locally
80%
Smaller fileHigher quality
Results
Your compressed images
Image compressor features
Private by design
Your selected images are processed in your browser and do not need to leave your device.
Full optimization control
Choose compression quality, image format and maximum width to balance size and visual quality.
Compress an image in three simple steps
Select images
Choose one or several JPG, PNG or WebP images from your device.
Choose settings
Adjust quality, output format and maximum image width for your use case.
Download results
Review the saved file size and download each optimized image or all files.
Why compress images for websites and sharing?
Large image files can make web pages slower and use more mobile data. Compressing photos before publishing can reduce transfer size while keeping the image visually useful. For photographs, JPG or WebP usually provides efficient compression. PNG remains useful for graphics that need transparency or lossless-style output.
For websites
Resize images close to the maximum dimensions at which they will be displayed. Avoid serving a 4000-pixel photo when the page only shows it at 1200 pixels wide.
For social sharing
A balanced quality setting can reduce upload time and storage use. Always preview important images after compression before publishing them.
For email
Smaller image attachments are easier to send and download. If file size matters more than transparency, WebP or JPG can be a practical choice.
Frequently asked questions
How does Preverse Compressora compress images?
Preverse Compressora uses browser technology to draw, optionally resize and re-encode supported images. The compression work happens on your device.
Are my images uploaded to a server?
No. The current tool processes supported images locally in your browser, so your selected files do not need to be uploaded to Preverse Compressora.
Which image formats are supported?
You can select JPG, PNG and WebP images. You can keep the original output type or convert to JPG, PNG or WebP when your browser supports the format.
Why does PNG sometimes compress less?
Most browser canvas implementations do not use the quality slider for PNG encoding. For photos, try WebP or JPG when you need stronger file-size reduction.
Will compression reduce image quality?
Lossy formats such as JPG and WebP can trade some visual detail for a smaller file. Use a higher quality setting when preserving detail is more important.