Image Compressor
Compress JPG, PNG, WEBP without losing quality
Works great with these tools
For the best compression results, resize your image to its exact display dimensions first using our free image resizer, then compress.
Converting to WebP before compressing gives you even smaller files. Use our image converter to switch formats, then compress here.
After optimising your images, test how much faster your page loads with our free website speed test tool.
Frequently asked questions
Common questions people ask before using this tool.
How does online image compression work?
The compressor re-encodes your image (JPEG, PNG, or WebP) at a chosen quality level to reduce file size. Smaller files load faster on websites and use less mobile bandwidth — important for SEO Core Web Vitals and user experience.
Will compression reduce image quality?
Lossy formats (JPEG, WebP) trade some detail for smaller size. Start with a moderate quality setting and zoom in to check for compression artifacts. For graphics with sharp text or logos, PNG or lossless WebP preserves quality without visible degradation.
Are my images stored after upload?
ToolsRacks focuses on browser-side processing where possible. We do not permanently store your images. For confidential documents, medical images, or proprietary designs, use offline tools approved by your organization.
What file types can I compress?
The tool supports JPEG and PNG as primary formats; WebP output may be available depending on your browser support. Convert unusual formats (TIFF, BMP, HEIC) to JPEG or PNG first if the upload fails.
How much can I reduce an image's file size?
Typical JPEG compression at 80% quality reduces file size by 40–70% with little visible quality loss. PNG files compress less but support lossless compression. WebP generally achieves 25–35% smaller files than equivalent JPEG at similar quality.
Should I compress images before or after uploading to my CMS?
Always compress before uploading. Many CMSes store the original and generate multiple sizes, so starting with an unnecessarily large file wastes storage. Compressed originals also speed up your CMS media library and any resizing operations.
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