Compress Images Online
Free Online Image Compressor
Compress JPG, PNG, and WebP images in seconds. Adjust quality, keep original format or convert output, then download optimized files instantly.
Output format
Compression quality
82%
Drop in your images to start
You can upload multiple files at once. Only JPG, PNG, and WebP files are supported.
Free online image compressor with batch support. Drag and drop files or click to upload.
Why Use This Image Compressor?
Built for practical, privacy-first image compression workflows on desktop and mobile.
Private local processing
Compression runs in your browser so images are not uploaded to our server.
Batch image compression
Compress multiple images in one run and download files individually or as ZIP.
Quality and format control
Choose output format and tune compression quality for the right size-quality balance.
Supports common formats
Works with JPG, PNG, and WebP for typical web and social media workflows.
No install, no signup
Open the page, upload images, compress, and download right away.
Desktop and mobile friendly
Use the same compression flow across modern browsers on phone or computer.
How to Compress Images Online
Reduce image file size in four quick steps.
Upload your images
Drag and drop JPG, PNG, or WebP files, or click to select images from your device.
Choose output format
Keep the original format or convert to JPG, PNG, or WebP based on your needs.
Adjust compression quality
Use the quality slider to balance visual clarity and smaller file size.
Compress and download
Click Compress Images, then download results one by one or export all files as ZIP.
Image Compression FAQ
Clear answers to common questions about quality, target size, formats, transparency, dimensions, supported files, privacy, and troubleshooting.
How can I reduce image size without losing too much quality?
Start with moderate quality settings and review fine details after compression. For photos, JPG or WebP usually gives better size savings. If results look blurry or blocky, increase quality and compress again. For text, icons, or sharp edges, use PNG or high-quality WebP.
Can I compress images to an exact size like 20KB, 50KB, or 100KB?
Exact KB targets usually require a few adjustments because content and format affect final size. Compress once, check the result, then tweak quality. If needed, use Image Resize first and compress again.
What is the difference between resizing and compressing?
Resizing changes pixel dimensions. Compression reduces file size through re-encoding quality and format. For strict upload limits, the best workflow is usually resize first with Image Resize, then compress.
Does compression change image dimensions?
No. This tool keeps the original width and height and compresses by re-encoding the file. If you need smaller dimensions, use Image Resize before compression.
Which format should I choose: JPG, PNG, or WebP?
JPG is good for photos and broad compatibility. PNG is better for graphics or transparency. WebP often provides strong compression with good quality and modern browser support.
Will transparency be preserved?
Transparency is preserved when output is PNG or WebP. If you convert to JPG, transparent areas are filled with a white background because JPG does not support transparency.
Why is quality control unavailable for PNG?
PNG uses lossless compression in this tool, so the quality slider does not apply to PNG output. To control visual quality more directly, choose JPG or WebP output.
Why did my PNG get larger after compression?
Some PNG files are already optimized, or image content may not compress well with your selected options. Try WebP or JPG output when transparency is not required, or lower quality further.
What files are supported?
You can upload JPG, PNG, and WebP files. Other formats are not supported on this page.
Can I compress multiple images at once?
Yes. Upload many files, apply one compression setup, and process them together. Then download files individually or as a ZIP package.
Are my images uploaded to your server?
No. Compression runs locally in your browser, so files stay on your device.
What if compression fails?
If a file fails, try compressing it again, switch output format, or lower image dimensions first with Image Resize. Also make sure your browser is up to date and the file is JPG, PNG, or WebP.
Start Compressing Images Now
Compress images online for free with private local processing and batch download support.