Reduce image size in KB (or MB) online: compress JPG, PNG, and WebP with quality presets or the slider. Bulk compress up to 20 files, preview savings, then download. Processing stays on your device.
Add images to process
Drop images here or click to add
JPG, PNG, WebP · up to 25MB · max 20
Choose quality, then compress · on your device
Output format
PNG input is currently exported as WebP by this compressor so quality controls can shrink the file—not PNG-preserving. Need JPEG instead? PNG to JPG, then compress.
Images are processed on your device—no image files are uploaded to our servers.
Quality % is approximate — final file size is not 100% accurate and varies by image. PNG uploads are saved as WebP so they can shrink.
Compare before & after
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Files are processed in your browser. Nothing is uploaded.
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Guide
How it works & what to know
1. Add up to 20 JPG, PNG, or WebP files (25 MB each) from your device.
2. Pick High Quality, Balanced, or Small Size, or use the quality slider to reduce image size in KB.
3. Review before/after size and preview, then download each file or use Download All.
Images are processed on your device—no image files are uploaded to our servers.
This page compresses image size online with a quality slider, ideal when you want a smaller file but the form does not name an exact limit. Results show KB saved so you can see how far the size dropped.
Need a hard ceiling? Use Compress Image to 40KB, 50KB, 100KB, or 200KB, or Compress JPEG to 100KB when the portal requires JPEG output.
Compression re-encodes your image at the quality you choose. Lower quality usually means a smaller file; higher quality keeps more detail. There is always a trade-off—this tool does not promise lossless compression or that every pixel stays identical.
Example: a 4.2 MB phone photo might land around a few hundred KB at Balanced quality, while an already-optimized web asset may shrink only a little. Check the KB (or MB) change and percentage saved on each result before you download.
Drop a folder’s worth of photos in one go (up to 20). Each file gets its own preview, size summary, and download, plus Download All when you want one ZIP for the whole bulk upload.
That is compress image size online free for everyday bulk work. No account and no per-file upload queue on our servers.
JPG/JPEG and WebP inputs stay in a lossy family you can quality-tune. PNG input is currently exported as WebP by this compressor so the quality slider can shrink the file—PNG canvas export alone does not respond to quality the same way.
If you need JPEG instead of WebP from a PNG, convert with PNG to JPG first (transparent areas flatten onto white), then compress. This page is not a PNG-preserving compressor.
Compression changes how pixels are encoded. Resizing changes width and height. A 4000px-wide photo wastes bytes even at a low quality setting if you only show it at 800px.
For websites, resize to the display size you need with the Image Resizer, then compress here. Use a target-size page when a form states an exact KB maximum.
FAQ
Quick answers about privacy, formats, and what this tool can do.
No. Images are processed on your device—no image files are uploaded to our servers for compression, analytics, or third-party image APIs.
Add JPG, PNG, or WebP files, pick a quality preset or the slider, then compress. Each result shows the new size in KB so you can see how much you saved. For a fixed ceiling (40–200KB), open the matching Compress Image to …KB page instead.
Yes. Select up to 20 JPG, PNG, or WebP files (25 MB each), compress them in one run, review each size saving, then download individually or use Download All—compress image size online free with no account.
Yes. This is lossy re-encoding when you lower quality. Use High Quality, Balanced, or Small Size, or the slider, and preview before downloading. We do not claim lossless or guaranteed “no quality loss” compression.
PNG input is currently exported as WebP so the quality control can reduce file size. This compressor does not keep original PNG bytes. If you need JPEG instead, convert with PNG to JPG first, then compress.
On target-size pages, very detailed images can still land Above target after quality and dimension steps. Those pages show Met target or Above target from the real output bytes—there is no guaranteed exact size.
If the image is much larger than you display or upload, resize first with the Image Resizer. Smaller dimensions often cut more bytes than compression alone. This page is for quality-based compression without a hard KB ceiling—use Compress Image to 40/50/100/200KB or Compress JPEG to 100KB for fixed limits.
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