Image Compressor

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.

Canvas export creates a newly encoded file and does not deliberately copy EXIF, XMP, IPTC, comments, or embedded color profiles from the source. That is useful when a lightweight web copy is the goal, but it is not a complete metadata-sanitization guarantee. Keep the original when camera details, authorship fields, color-managed output, or archival provenance matter.

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 the Image Resizer when pixel dimensions also need to change. For a small controlled asset that must be embedded as text, optimize it first and continue with Image to Data URL. Keep an original copy because lossy compression discards visual information and repeated compression can compound artifacts.

FAQ

Lossy compression removes some visual information. Moderate settings often preserve a good visual result, but inspect text, faces, edges, and gradients because the best setting varies by image.

No. Supported images are decoded, redrawn, and encoded inside your browser. ToolSeta does not receive or store the selected file.

PNG is normally lossless and does not use the same quality control. The tool exports PNG inputs as WebP so it can create a meaningfully smaller lossy output while retaining transparency where supported.

No. The canvas uses the source image's original width and height. Only encoding and, for PNG inputs, the output format change.

The source may already be optimized, may contain content that compresses poorly, or may use a more efficient encoding for that image. Try a lower quality or resize the dimensions if a smaller file is essential.