Image Compressor guide
Compress JPG, PNG, and WebP images online while keeping the visual detail that matters.
What this tool does
ToolSeta decodes the selected image in your browser, redraws it to a canvas at its original dimensions, and asks the browser encoder to export a new file at the quality level you choose. PNG inputs are converted to WebP so the quality control can reduce size; JPG and WebP inputs are exported in a compatible lossy format.
The quality percentage controls encoder effort and visual fidelity, not a guaranteed amount of file-size reduction. Photographs often compress more effectively than screenshots, diagrams, or images that were already optimized.
How to use it
- Drop an image into the workbench.
- Choose an output quality between 30% and 95%.
- Select Compress image.
- Compare the original and output file sizes.
- Download the result and inspect important details before replacing the source.
Benefits
- Faster web pages and lighter email attachments
- Adjustable balance between size and detail
- WebP conversion for PNG inputs
- Original pixel dimensions remain unchanged
Choosing an output quality
Values around 70–85% often provide a useful starting point for photographs, but the right setting depends on the image. Text, logos, gradients, and fine patterns can reveal artifacts sooner than natural scenes. If the output is larger than the source, the original was already efficient or its format better matched the content.
Compression is separate from resizing. This tool keeps the original width and height; use Image Resizer when pixel dimensions also need to change. Keep an original copy because lossy compression discards visual information and repeated compression can compound artifacts.