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Toolmivo
Image Tools

Image Compressor: Reduce Image Size to Any KB

Compress JPG, PNG and WebP images to a specific file size such as 100KB, 50KB or 20KB, or set the quality yourself. Cap the width for big photos, compare before and after, and see exactly how many kilobytes you saved.

  • Free, no sign-up
  • Files stay on your device
  • No watermark
  • Works on desktop & mobile

Drop images to compress

JPG, PNG or WebP, up to 20 files of 50 MB each. Processed on your device.

Settings

Compress by
Output format

PNG is lossless, so there is no quality setting.

Downscaling large photos is often the biggest saving. Images are never enlarged.

Lossy vs. lossless

JPG and WebP are lossy: they discard fine detail you rarely notice to save space. PNG is lossless: every pixel is kept, so re-saving a PNG rarely shrinks it much. For transparent images, WebP keeps transparency with far smaller files.

How to use the image compressor

  1. 1
    Drop one or more JPG, PNG or WebP images (up to 20 at a time).
  2. 2
    Choose the output format. “Same” keeps each image's format; WebP usually gives the smallest files.
  3. 3
    Compress by quality (70–80 suits most photos) or switch to Target file size and enter a size such as 100 KB. For large photos, also set a maximum width.
  4. 4
    Select Compress, review the size change and the before/after comparison, then download.
tips & examples

Getting the best results

Resize before you compress

A 4000-pixel photo shown at 1080 pixels wastes most of its data. Capping the width often saves more than lowering quality.

Check faces, text and gradients

Use the comparison slider to inspect skin, small text and skies. These show compression artifacts first; raise quality if you see blockiness or banding.

Platforms compress again

Social networks re-compress uploads. Starting from a clean, high-quality file at the right size gives the best result. Read how to compress images without losing visible quality.

faq

Image Compressor questions

How do I compress an image to 100KB (or 50KB)?

Choose Target file size, select 100 KB (or type any size), and press Compress. The tool finds the highest quality that fits under your target and only reduces the dimensions if quality alone isn't enough. If the target is impossible for that image, it tells you and gives you the smallest version instead.

Can I compress an image without losing quality?

Every lossy compression removes some data, but at quality 70–85 most photos look identical to the original at a fraction of the size. Lowering the dimensions to what you actually display usually saves far more than lowering quality.

Why is my compressed image larger than the original?

Some files are already highly optimized, and re-saving a PNG or a low-quality JPG at a higher quality can add bytes. The tool always shows the real result and warns you when the output is larger, so you can keep your original.

Does compressing remove transparency?

PNG and WebP keep transparency. JPG cannot store it, so transparent areas are filled with the background color you choose.

What quality setting should I use?

For photos, 70–80 usually looks the same as the original at a fraction of the size. Graphics with sharp text may need 85–90, or PNG.

Are my images uploaded?

No. Compression runs entirely in your browser. Your images never leave your device.

Is camera metadata kept?

No. The compressed image is re-encoded from its pixels, which strips EXIF metadata such as GPS location and camera details.

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