Compress Image to KB

Make a photo smaller for an online form, email or website: pick a target size like 100 KB or a quality, resize in pixels, and download. Your images never leave your device.

  • Free
  • No sign-up
  • Exact KB size
  • JPG, WebP, PNG

or drop a file here, or paste an image (Ctrl+V)

JPG, PNG, WebP, AVIF · works on phone and desktop

No image? Try one:

🔒 Private: your photos are processed in your browser and never uploaded.

How to compress an image to a specific size

  1. 1

    Upload your image

    Click “Upload image”, drop a JPG, PNG or WebP onto the page, or paste a screenshot with Ctrl+V.

  2. 2

    Choose the size

    Pick a target such as 100 KB or 50 KB – the tool finds the best quality that fits and shrinks the image only if it has to. Or set the quality and pixel size yourself.

  3. 3

    Download

    Check the new size and dimensions, then download the compressed image.

Why use this image compressor?

  • Exact file size

    Hit limits like 20 KB, 50 KB, 100 KB or 200 KB for application forms, job portals and exam registrations.

  • Resize in pixels

    Set a maximum width or height, or pick 3840, 1920, 1280 or 800 px for websites, email and social media.

  • JPG, WebP and PNG

    Convert while compressing: WebP is usually 25–35 % smaller than JPG at the same quality.

  • 100% private

    Everything happens in your browser. Your images are never uploaded, and there is no limit.

Popular uses

  • Photos and signatures for online forms
  • Job and university applications
  • Email attachments
  • Faster websites and online shops
  • Social media and messengers
  • Freeing up phone storage

Frequently asked questions

How do I compress an image to 100 KB?

Upload the image, keep “Target file size” selected and pick 100 KB. The tool lowers the JPG quality step by step until the file fits, and only reduces the pixel size if even low quality is not enough. Then click Download.

How do I reduce a photo to 20 KB or 50 KB for a form?

Choose 20 KB or 50 KB as the target. For very small limits it helps to set a max width as well, e.g. 800 px – the result looks sharper than a large image saved at very low quality.

Is 1 KB 1000 or 1024 bytes?

This tool counts 1 KB as 1024 bytes, which is what most upload forms check. That keeps the file safely under the limit either way.

Does compressing reduce quality?

JPG and WebP compression removes detail you usually cannot see at normal viewing size. The tool always keeps the highest quality that fits your target. PNG is lossless, so it can only get smaller by reducing the pixel size.

Are my images uploaded?

No. Compression runs in your browser; your images never leave your device.

Which format should I choose?

JPG works everywhere and is best for photos. WebP is smaller at the same quality and works in all modern browsers. PNG keeps transparency and sharp text but makes larger files.