Reduce file size dramatically while keeping crisp quality. Batch process and compare before/after instantly.
Drop images to compress
JPG, PNG or WEBP · select multiple for batch
Image Compressor Tool: Reduce File Size Without Quality Loss: practical Tools guide with use cases, quality checks, and next steps on AltFTool.
Image Resizer Tool: Resize Images Without Losing Quality: practical Tools guide with use cases, quality checks, and next steps on AltFTool.
Convert WebP images to high-quality PNG, JPG, or PDF files quickly in your browser. Batch convert multiple files and download as a ZIP archive.
Set a page weight budget, subtract code and fonts, and see how many images of a given size and format still fit.
Compare image resolution, quality, sharpness, DPI, and compression like a professional. Analyze two images side-by-side with detailed metrics.
Interactively compare two product images (e.g., Before/After or variations) side-by-side with a drag slider.
Compare learning platforms and build skills.
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