Image Compressor
Shrink an image file with a live quality slider, see exactly how much smaller it gets, and download the result. Everything runs in your browser, with no upload.
Part of 🖼️ Free Image Tools
or drag & drop an image here
✔ 100% Free✔ No Signup✔ No Watermark✔ Unlimited Use
Compress an Image Without the Guesswork
This free image compressor shrinks a JPG or PNG file so it uploads faster and takes less space, right in your browser. Drag the quality slider and watch the file size and the percentage saved update live, so you can trade a little detail for a much smaller file with full control.
Your image is never uploaded, so it stays private on your device. You can also cap the width to downscale big photos at the same time, which shrinks the file even further.
How to Use the Image Compressor
- 1Choose an image or drag and drop it onto the box.
- 2Drag the quality slider and watch the size and percentage saved update live.
- 3Optionally set a max width to downscale large photos at the same time.
- 4Click Download compressed JPG to save the smaller file.
Why Use MakeToolz's Image Compressor?
Live size and savings
See the compressed file size and how much smaller it is as you move the slider.
Quality you control
Pick the exact balance of file size and detail instead of a fixed preset.
Optional downscale
Cap the width to shrink oversized photos further in the same step.
Works on JPG and PNG
Load any common image and export a compact JPG.
100% in your browser
Compression runs locally, so your image is never uploaded or stored.
No signup, no watermark
Compress as many images as you like, free, with nothing added to the picture.
Why Compress Images
Large image files slow down web pages, fill up storage and get rejected by upload limits on forms, forums and marketplaces. Compressing an image keeps it looking good while cutting the file size, which means faster page loads, quicker uploads and happier email attachments. It is one of the simplest ways to speed up a website, since images are usually the heaviest part of a page.
Because this tool runs entirely in your browser, it is also safe for private photos, since nothing is uploaded. There is no signup, no watermark and no limit, so it fits into a real workflow.
How to Get the Smallest File
- Lower the quality first: most photos look fine at 70 to 80%, which often halves the size.
- Cap the width: a photo shown at 1200px wide does not need to be 4000px, so downscaling saves a lot.
- Watch the preview: stop lowering quality when you start to see blockiness.
- Use JPG for photos: it compresses continuous-tone images far better than PNG.
Quality Settings at a Glance
| Quality | Look | Best for |
|---|---|---|
| 90 to 100% | Near-original | Print, hero images |
| 70 to 85% | Very good | Most web use |
| 50 to 65% | Noticeable but usable | Thumbnails, tight limits |
People Also Ask
How do I compress an image?
Drop your image above, lower the quality slider until the size looks right, and click Download. It all happens in your browser with no upload.
How do I reduce an image file size without losing quality?
Keep the quality slider around 80% and cap very large widths. That removes data your eyes barely notice while cutting the file size substantially.
Can I compress a PNG?
Yes, load a PNG and export a compact JPG. If you need to keep transparency, use the resizer instead, since JPG fills transparent areas with white.
Is image compression here free?
Yes, completely free with no signup, no limits and no watermark. Everything runs in your browser.
Does compressing upload my photo?
No. The whole process runs on your device, so your image never leaves your browser.
What is a good file size for a web image?
Aim for under about 200 KB for most web photos. Use the live readout to hit your target while keeping the picture looking clean.