Quick answer: Choose dimensions and output format, then adjust quality or an approximate target size. JPEG/WebP quality is lossy; PNG may remain large. Compare dimensions, bytes and visible detail before replacing the original.
Image Compressor & Resizer — Free & Private
Resize or re-encode an image with exact pixel dimensions, presets, format and quality controls. An optional target-size search applies to lossy output, but the final size and visible quality depend on the source.
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Measured Size Comparison
See original and output bytes, dimensions and the calculated reduction. Some inputs may not become smaller.
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Exact Pixel Resize
Lock aspect ratio and enter exact W×H in pixels, or use the percentage scale slider.
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Exact Canvas Presets
Fits the full image without crop or distortion, centred inside a named canvas. Verify current platform requirements before upload.
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Approximate Target Size
For JPG or WebP, the tool searches for the highest tested quality under the requested size when the encoder can reach it.
Frequently Asked Questions
No. For JPG or WebP, the tool searches tested quality levels for the highest result under the requested limit. Some dimensions and image content cannot reach the target, and PNG target-size mode is unavailable.
No. Presets fit the full image inside the exact canvas while preserving aspect ratio. Unused space is white in JPG and transparent in PNG or WebP.
Yes. Increasing dimensions, choosing PNG, using very high quality or converting an already optimized image can produce a larger file. The result reports whether output is smaller, larger or about the same size.
The image is decoded and re-encoded through a browser canvas, so EXIF and other source metadata are generally not retained. Color appearance can also vary with browser color management.
The resize and encoding operation runs with client-side browser code. The page can still request ordinary site assets, analytics and third-party libraries.
There is no universal winner. JPG is widely used for photographs, PNG is useful for transparency and sharp graphics, and WebP supports both lossy and lossless modes. Compare browser support, output bytes and visible detail for your image.
No single quality percentage is visually lossless for every image. Start with a high setting, inspect text and edges at the intended viewing size, and lower quality gradually. Keep the original because lossy compression cannot be reversed.
Yes. Enter output width and height, keep the aspect ratio locked when appropriate, or use the scale control. Reducing pixel dimensions often reduces bytes, but the amount varies with the image and output format.
Yes. PNG output preserves transparency. JPG does not support transparency, so this tool places transparent areas on a white background. WebP output can preserve transparency, although its final size varies by image.
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Connect Google Drive to save selected outputs to your own Drive storage. Review the destination before uploading sensitive documents.
