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Compress images with adjustable quality — see before/after size comparison.
Use Image Compressor when an image looks right but the file size is too large for a website, email, CMS, or upload form. Compression trades some image quality for fewer bytes, so the best setting depends on how the image will be viewed. Always preview text, faces, gradients, and product details before replacing the original.
Use a higher quality setting or resize less aggressively before compression.
Increase quality and preview smooth areas at the display size used by the destination.
Combine moderate compression with resizing dimensions to the actual required display size.
Check the output format because JPEG does not preserve transparency while PNG or WebP may.
Image Compressor processes the selected file in your browser, so pixels are not intentionally uploaded to a remote optimization service. Compression can be lossy, so keep the original image until the downloaded result has been accepted by the website, CMS, or recipient.
Start with a duplicate of the original photo, screenshot, or graphic so you can compare results safely.
Begin with a moderate quality level and lower it only if the file size remains too high.
Check faces, small text, sharp edges, gradients, transparency, and overall dimensions in the preview.
Save the optimized image and confirm it meets the upload limit or performance target.
Input: 4.8 MB JPEG at 2400x1600. Output: a smaller JPEG using reduced quality while keeping the same dimensions for the page layout.
Input: PNG screenshot with readable UI text. Output: compressed image that stays under an email limit after checking that labels remain legible.
Input: 2.2 MB product photo with a 1 MB upload limit. Output: a compressed copy that stays below the limit while preserving clean edges around the product.
It reduces image file size by adjusting compression quality and sometimes output format while keeping the visual dimensions unless you choose a resize option elsewhere.
Compression itself focuses on bytes and quality. If you also need different pixel dimensions, resize the image before or after compression depending on the workflow.
Start around a medium-high quality setting and inspect important details such as faces, text, gradients, and product edges. Lower quality creates smaller files but more visible artifacts.
Large JPEG photos and screenshots often shrink significantly. Simple logos or already optimized images may show smaller gains.
Compression runs in the browser, so selected images are not intentionally uploaded to a server. Keep private originals on trusted devices and review the downloaded file before sharing.
For web publishing, resize to the display dimensions first, then compress the resized copy. That avoids spending bytes on pixels the page will never show and gives you a more realistic preview of quality at the final size.
Zoom to the size users will actually see and look for blocky edges, smeared text, banding in skies or gradients, and unnatural skin texture. If those details matter, raise the quality setting even if the file is slightly larger.