Free Image Compressor Online (JPG, PNG, WebP)
Squeeze JPG, PNG, and WebP files down with a quality slider that shows the size saved live — a 4 MB photo can drop to around 600 KB. Images stay on your device.
When to use it
- Getting page images under a performance budget so a site loads faster.
- Shrinking photos to fit an email or form attachment limit.
- Lightening blog or product images before uploading to a CMS.
- Reducing a screenshot's size before sharing it in a ticket or chat.
Features
- Compress JPG, PNG, and WebP
- Adjustable quality
- Shows original and compressed size
- Displays how much space you saved
- Download the optimized image
About Image Compressor
Image Compressor re-encodes a JPG, PNG, or WebP at a quality level you choose and reports the before-and-after size so you can see exactly how much you saved. It targets the two things that slow pages and bloat attachments — oversized photos and screenshots — letting you trade a little detail you cannot see for a much smaller file. For the biggest wins you can resize the dimensions first, since a 4000 px photo carries far more data than the 1200 px most pages actually display.
How to use this tool
- Upload or drag and drop an image.
- Choose the compression quality.
- Wait for the optimized image.
- Download the smaller file.
Examples
4 MB JPG straight from a phone camera
~600 KB JPG at 70% quality — about 85% smaller, no visible loss at screen size
70% quality is the usual sweet spot where files shrink hard but the difference stays invisible.
1.5 MB PNG screenshot
Re-encoded to a smaller PNG, or far smaller as WebP at the same quality
Flat-color screenshots compress well; converting to WebP usually saves the most.
Tips & gotchas
- Quality and size are a direct trade-off; around 70% usually cuts size dramatically with no visible difference at screen sizes.
- WebP typically produces smaller files than JPG or PNG at the same quality — convert if your destination supports it.
- Resizing the dimensions first gives the biggest savings; a 4000 px image shrinks far more than tweaking quality alone.
- PNG is lossless and best for graphics with flat color; for photographs JPG or WebP will be much smaller.
Specifications
| Formats | JPG, PNG, WebP |
|---|---|
| Control | Quality level you set |
| Output | Optimized image with before/after size shown |
| Resize | Pair with Image Resizer for larger savings |
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
What quality setting should I use?+
For photos, around 70% is a common sweet spot — files shrink dramatically while the loss stays invisible at normal viewing sizes. Drop lower only if you need an even smaller file.
Which formats can I compress?+
JPG, PNG, and WebP. WebP usually yields the smallest file at a given quality, so converting to it is worth considering when the destination supports it.
Will compressing visibly reduce quality?+
At moderate settings the change is hard to spot on screen. Quality and size trade off directly, so the slider lets you balance clarity against file size.
How do I get the biggest size reduction?+
Resize the dimensions down to what you actually display before compressing. A photo scaled from 4000 px to 1200 px loses far more weight than quality changes alone.
Related tools
Related guides
Looking for more Image Tools?
Browse the full collection of free, browser-based tools.