Compress Image Online
Reduce JPG, PNG and WebP file size in your browser. Fix “file too large” upload errors for email, portals and websites — free, private, no signup.
Drop your image here
or click the button below to choose
Choose ImageShrink images that websites and email reject
Large camera and phone photos slow pages, bounce off email limits and fail portal uploads. This compressor lowers file size while you watch the before/after size and quality live — so you can stop as soon as the file is small enough.
Use it when you need a lighter image but not a single hard KB number. For exact caps like 20KB or 50KB, use Compress Image to Exact Size instead.
What stays the same
Pixel dimensions stay the same unless you resize separately. Compression only reduces how much data is stored for each pixel. JPG and WebP respond best; PNG graphics compress less because they are often already lossless.
All work happens on your device. Download a new file — your original is untouched.
Key features
Live quality slider
See size and preview update as you balance clarity and weight.
JPG, PNG and WebP
Common web and phone formats in one place.
No account required
Open the page, drop a file, download the result.
Client-side only
Your photos never leave your computer or phone.
Supported formats and limits
- JPEG
- PNG
- WebP
Common upload errors this fixes
- “File too large”
- “Attachment exceeds size limit”
- “Image exceeds maximum upload size”
- “Please reduce image size and try again”
Your privacy is built in
Compress Image Online runs locally in your browser — your file never leaves your device and is never uploaded to a server. No account, no watermark, and completely free.
Frequently asked questions
How much can I reduce an image?
Does compression change width and height?
When should I use exact KB compression instead?
Are my files private?
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