A smaller image can be easier to attach or place on a page, but the smallest file is not always the most useful one. Add a picture, adjust the quality setting and compare its preview with the source. You decide when to apply the change and continue to the download page.
Drop an image to start — Image Compressor
PNG, JPG, WebP and more. Processed entirely in your browser.
Choose an image and note the destination's accepted format and any file-size limit.
Try the quality control and an available export format, using before-and-after comparison for important details.
Continue to the download page only when the preview looks suitable, then inspect the saved file and its actual size.
An attachment limit, a slow-loading page and a collection of oversized photographs call for different compromises. Note any maximum file size before opening the editor. If there is no strict limit, decide how the picture will be seen: a small thumbnail tolerates different losses from a full-width photograph or a diagram with fine text. Compression is useful only if the resulting picture still serves its purpose.
The source matters. A photograph may contain subtle gradients and textured areas, while a screenshot may contain crisp letters and flat colors. Examine the most important part of your own image, not just the overall preview. Saving a few bytes is little benefit if the label that explains a product or the number in a chart becomes difficult to read.
The slider lets you choose a quality setting and shows a refreshed preview. Move it gradually while looking at edges, small text and smooth backgrounds. The before-and-after view helps locate differences that are easy to miss when one version replaces the other. You can return to a previous setting if the smaller preview no longer looks suitable.
A percentage on the control is an encoding setting, not a promise of a particular file-size reduction. Two images with the same dimensions can compress very differently depending on their contents. The output-size estimate updates as the preview is prepared; inspect the actual saved file afterward if a strict upload limit is involved.
This editor offers JPEG, WebP and PNG as output choices. JPEG is often practical for photographs where transparency is not required. WebP can be a useful web-oriented alternative when the destination accepts it. PNG may be important for graphics with transparent areas or sharp-edged artwork, although moving the quality slider should not be treated as a universal way to make PNG smaller.
Changing format is more than changing a filename. A destination may accept only particular extensions, and transparency or edge appearance may change when saving to a different type. Verify what the receiving site or app supports and inspect the new image. If the original has details that must remain exact, keep it separate from the compressed delivery copy.
Adjustments update a local preview while you work. The download workflow is not started every time you move the slider or switch a format. Press the apply action only after you have chosen a result worth keeping. That separation lets you compare options without creating several unwanted result pages.
Preview appearance can also depend on how it is displayed inside the editor. Check the final downloaded file at the size where it will appear, particularly around lettering and high-contrast boundaries. A picture that looks clean as a small preview may reveal compression artifacts when viewed larger. Return to the source and choose a different setting if necessary.
The editor creates a new result rather than changing the source file in place. Keep the original when future resizing, cropping or another export may be needed. Repeatedly compressing an already compressed copy gives you fewer options for balancing clarity and size, especially when the earlier version had visible losses.
After applying, the result appears through the download flow. Confirm its extension, dimensions and actual file size before attaching it to a form or replacing a site asset. If you maintain several delivery versions, filenames that mention their destination or intended use are more helpful than several indistinguishable copies.
No. It updates the working preview. Use the apply action when you are ready to create a result and continue to the download page.
Not necessarily. Output size depends on the source, selected format and settings. Compare the final file size with the original before relying on a reduction.
JPEG is often useful when transparency is unnecessary, while WebP may suit a destination that accepts it. Check the receiving app's format rules and inspect the result.
Choose an output type that can represent transparency, such as PNG or a suitable WebP result, and verify the saved image. JPEG is not the right choice for preserving transparent areas.
No. The percentage controls encoding quality where relevant. Different images respond differently, so inspect the estimated and actual file sizes.
The final file is what the destination will receive. Viewing it at its intended size can reveal changes around text and edges that a small preview conceals.
You can, but it is usually better to return to the original and export a new copy. Repeated processing of a lossy result can reduce clarity further.