Security & privacy for Image Compressor conversion
About Image Compressor conversion
Image compression reduces the number of bytes an image file occupies without changing its format. For JPG and WebP, the quality slider controls how aggressively the encoder discards visual detail - lower quality produces a much smaller file with slightly softer edges, while higher quality keeps the image nearly identical to the eye. PNG is handled differently: it's a lossless format, so re-compression keeps every pixel exact and shrinks the file by stripping metadata and non-essential chunks that many editors and screenshots leave behind.
Everything runs on your browser's Canvas API, so your images are decoded, re-encoded, and compared entirely on your device - nothing is ever uploaded. That makes this compressor instant, unlimited, and private: you see the exact before/after file size before deciding whether to download.
Common use cases
- Shrinking product photos to speed up an online store
- Reducing image size to fit email attachment limits
- Compressing social media images before uploading them
- Cutting page weight to improve Core Web Vitals without changing formats
- Batch-compressing a folder of JPG or WebP images and downloading them as a ZIP
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