Compress Tool
Compress images — smaller files, same quality
Reduce image file sizes by up to 90%. Adjust the quality slider for the perfect balance. Works in your browser — zero uploads, instant results.
Lower quality = smaller file size. Preview updates live.
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Upload a PDF to compress. Lower quality = smaller file size. Scale reduces page resolution before re-packaging.
Processed Images
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FAQ
Frequently asked questions
Use our quality slider to find the perfect balance. At 70-80% quality, most images show virtually no visible difference while achieving 50-70% file size reduction. The preview updates in real time so you can compare before downloading.
Lossless compression (like PNG) preserves every pixel exactly — the image looks identical but the file size reduction is smaller. Lossy compression (like JPEG at lower quality) intelligently discards data the human eye cannot easily see, achieving much greater size reductions. Our tool uses JPEG compression so you get the best of both worlds.
No. Our compression tool only reduces the file size by adjusting encoding quality — it never changes the pixel width or height of your image. If you need to change dimensions, switch to the Resize tab.
No — all compression happens locally in your browser using the Canvas API. Your files never leave your device, ensuring complete privacy and security.