Compress a JPG, PNG or WebP image and keep its format, using a quality slider or a target file size for JPG and WebP. PNG is optimized losslessly.
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Large images slow down websites and get rejected by upload forms and email attachment limits. This tool re-encodes JPG and WebP images at a quality you choose (30-95%, default 72%) and shows the original and new sizes, the percentage saved, and a before/after preview before you download.
In a test with a generated 1000x700 photo-style JPG, the default 72% setting took the file from 422.5 KB to 203.9 KB (51.7% smaller), and 30% brought it to about 80 KB; results depend heavily on the image and on how compressed it already is. Everything runs in your browser, and the same compression engine powers the Bulk Image Compressor.
This tool compresses a single image in your browser and keeps its format: a JPG stays a JPG, a WebP stays a WebP, and a PNG stays a PNG. JPG and WebP use an adjustable quality slider or, if you prefer, a target file size such as 200 KB; a PNG is optimized losslessly, so its pixels never change and there is no slider or size target for it. If compressing would not make the file smaller, the tool tells you and keeps your original instead of giving you a bigger file.
Upload JPG, PNG, or WebP image you want to compress.
Choose compression level to balance size and quality.
Image is optimized and compressed instantly in your browser.
Compare original and compressed image quality.
Download the compressed image file.
Compress a JPG or WebP photo before attaching it to an email or uploading it to a form with a size limit.
A PNG is recompressed losslessly - the saving is usually modest, but nothing about the picture changes.
Use the Original/Compressed preview and the size panel to confirm the quality looks right before committing to the download.
Use the Image Resizer first if the image's pixel dimensions are larger than you actually need.
For a JPG or WebP, switch to Target file size and choose 20, 50, 100, 200 or 500 KB. The tool finds the highest quality that fits and shows what it used.
This page compresses one image at a time - use the Bulk Image Compressor for a batch.
Best For
Source File
photo.jpg - 1000x700, 422.5 KB (a generated test image)Result
photo-compressed.jpg - 203.9 KB (51.7% smaller) at the default 72% qualityMeasured directly in the tool. Savings vary a lot by image content and how compressed the source already is - an already-compressed JPEG will show a much smaller reduction than this fairly detailed test image, and a file that can't be made smaller is simply kept.
Compress a JPG or WebP photo before attaching or uploading it somewhere with a file-size limit.
Use the before/after preview to confirm the compressed version still looks acceptable before downloading and using it.
Upload a PNG to have it repacked losslessly. If you need it much smaller and can accept a lossy format, convert it with PNG to JPG or PNG to WebP first.
Problem
Solution
A PNG is compressed losslessly, so the saving depends on how wastefully the file was written. Screenshots exported by some programs shrink noticeably; many files shrink only a few percent, and some are already as small as they can get - in that case the original is kept. For a much smaller picture, convert it to JPG or WebP.
Problem
Solution
The slider only appears for JPG, WebP and other lossy formats. PNG is lossless, so the tool explains that instead of showing a control that would do nothing.
Problem
Solution
Re-compressing a JPEG that's already been through lossy compression yields much smaller gains than compressing a fresh, high-quality source - there's less redundant data left to remove. Pushing the slider too high can even make the file bigger, in which case the original is kept.
Problem
Solution
The original size, new size and percentage saved appear before you download, together with the before/after preview - check them to confirm the result looks right at your chosen quality setting.
PNG optimization is lossless and therefore limited. For photographs, switching format with PNG to JPG or PNG to WebP shrinks the file far more, at the cost of some detail.
Pixel dimensions affect file size more than quality does in many cases - use the Image Resizer first if the image is much bigger than its intended use.
The default 72% is a reasonable web setting. Raise it toward 90-95% when preserving detail matters more than file size.
WebP keeps transparent areas and usually compresses smaller than PNG, so it is a good target for logos and cut-outs you intend to put on a web page.
There is no quality slider for PNG, and the saving can be small. If the optimized file is not smaller than your original, the original is kept.
Animated WebP and animated PNG files are not recompressed, because that would remove the animation. AVIF files are only re-encoded in browsers that can create AVIF; otherwise the original is kept. HEIC photos are converted to JPG. GIF, BMP and SVG are not supported.
EXIF data, including GPS location and camera details, is not carried over when a JPG or WebP is re-encoded or a PNG is optimized. When the original is kept, you download it unchanged, metadata included.
This page compresses a single image. A target size is a goal, not a guarantee: only the quality is lowered (never the image dimensions), so a very small target may not be reachable, and the tool then shows the closest result. PNG and AVIF can't be size-targeted. There are fixed target sizes (20, 50, 100, 200, 500 KB), not an arbitrary number. For batches, use the Bulk Image Compressor.
Both use the same compression engine, but for different batch sizes.
| Image Compressor (this tool) | Bulk Image Compressor | |
|---|---|---|
| Files per run | One image, with a live before/after preview | Multiple images at once, downloaded as a ZIP |
| Best for | Fine-tuning and checking a single image before download, with a quality or target-size choice | Processing a whole batch with one shared setting |
Which should you use?
Use this tool when you want to see the before/after comparison and fine-tune one image. Use the Bulk Image Compressor when you have many files to process at once.
The most common questions are about PNG files and about what happens when compression doesn't help. The FAQ below covers both, along with transparency, metadata and file limits.
No, and the tool doesn't show a slider for PNG. A PNG is optimized losslessly: the pixels stay exactly the same and only the way the file is packed changes, so the saving depends on how efficiently the original was written. If the optimized file is not smaller, your original is kept.
Yes. JPG stays JPG, WebP stays WebP and PNG stays PNG, and the downloaded file's name and type match its real format. Transparent WebP and PNG images keep their transparency. HEIC photos are the exception - they are saved as JPG.
It means compressing would not have made the file smaller (for example an already-optimized image, or a very high quality setting), so the tool gives you your original file unchanged instead of a larger one. Animated WebP and PNG files are also kept as they are, because recompressing them would remove the animation.
At the default 72% setting, most photos show no obvious quality loss. Lower settings trade more visible quality for a smaller file, and re-compressing an already-compressed JPEG shows smaller savings than compressing a fresh, high-quality source.
Yes, for JPG and WebP: switch to Target file size and choose 20, 50, 100, 200 or 500 KB. The tool lowers only the quality - never the image's dimensions - to find the highest quality that fits, and the result shows the quality it used. It is a target, not a guarantee: if even the lowest quality is still too big, you get the closest result, clearly marked as not reached. PNG can't be size-targeted because it is compressed losslessly.
JPG, PNG, WebP, AVIF and HEIC. JPG, PNG and WebP keep their own format. AVIF is only re-encoded in browsers that can create AVIF files, otherwise your original is kept. HEIC photos are converted to JPG. GIF, BMP and SVG are not supported.
Yes, when the image is re-encoded or a PNG is optimized, metadata such as GPS location or camera details is not carried over. If the tool keeps your original because compressing wouldn't help, that original is downloaded unchanged, metadata included.
No, this page handles one image at a time. Use the Bulk Image Compressor on CoditTools to compress multiple images in a single batch and download them as a ZIP.
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