Try a lower quality setting, download the result, and compare its actual size with the limit. There is no automatic target-size mode. If it remains too large, reducing dimensions in a separate resizing step may help.
Image Compressor
Re-encode one JPEG, PNG, WebP, or GIF image in the same format with a chosen quality setting. Animated input is reduced to a static first frame; check file size and appearance before replacing the original.
Reduce file size without choosing a new format
This page changes compression settings, not the output format or the image dimensions.
Quality
Choose “Strongest compression”, “Strong compression”, “Moderate compression”, “Balanced”, “Prioritize detail”, “High quality”, or “Highest quality”. The default is “Balanced”.
Original format
A JPEG remains JPEG, a PNG remains PNG, and so on. The same format does not mean identical pixels.
File size
There is no target-size field or guaranteed reduction. An already optimized image can produce a larger result.
| Control | Behavior |
|---|---|
| Quality | Choose “Strongest compression”, “Strong compression”, “Moderate compression”, “Balanced”, “Prioritize detail”, “High quality”, or “Highest quality”. The default is “Balanced”. |
| Original format | A JPEG remains JPEG, a PNG remains PNG, and so on. The same format does not mean identical pixels. |
| File size | There is no target-size field or guaranteed reduction. An already optimized image can produce a larger result. |
If the upload requirement is about width or height rather than KB, use Image Resizer.
How to compress an image
1
Choose the original image
Upload one supported image. Use a static image if you need to keep all its visible content; animation is not preserved.
2
Choose a quality level
Start with “Balanced”. Choose “Strong compression” or “Strongest compression” when file size matters most, or “High quality” when preserving detail matters more. Compare the downloaded result before deciding.
3
Compare and download
Run Compress Image and download the result. Check the actual file size, small text, gradients, and transparency. Start each comparison from the original file.
Quality works differently for each format
The same quality number does not apply the same encoding operation to every format.
| Format | How it is processed | What to inspect |
|---|---|---|
| JPEG/JPG | Lossy JPEG re-encoding. | Fine texture, small text, and compression artifacts. |
| PNG | Palette-based encoding with fewer colors; even “Highest quality” permits at most 256 palette colors. | Brand colors, smooth gradients, and partially transparent edges. This is not guaranteed lossless PNG optimization. |
| WebP | Re-encoding with the chosen quality. | Compare detail and size; a higher-quality preset does not guarantee a smaller file. |
| GIF | A static first frame with a reduced color palette. | Animation is not preserved, even though the output still has a .gif extension. |
Lower settings can discard detail or colors. Keep the original if you need a faithful archive.
Before you replace the original
Compression runs on the server after upload. Download the result when ready; temporary files are handled by the service's cleanup process.
This page has no batch upload, crop, resize, or output-format selector. It cannot automatically meet a 50 KB, 100 KB, or other exact file-size limit.
Keeping the file format is not a promise to preserve original bytes or metadata. Check any properties that matter to your workflow and retain the source.
Image compression questions
No lossless mode is offered here. JPEG and WebP are re-encoded, and PNG/GIF use a color palette. “Highest quality” does not promise an unchanged image.
The original may already be efficiently encoded. Different settings and image content can produce a larger result. Keep the smaller acceptable version instead of assuming every run saves space.
This tool reads and re-encodes a static first frame. It does not optimize an entire animation; keep the original GIF if you need the motion.
Check a compressed version of your image
Choose a quality setting and compare the result with the original.