Compress image to 20 KB

Prepare a file for small signature or ID upload fields, with a measured 20000-byte ceiling.

Edit several images at once

Drop up to 30 images here. Choose the image settings below, then click Process images to apply them to every file. Crops start from the center. PDF files can be combined in the order shown.

Your image never leaves this device

Drop an image here

Prepare a file for small signature or ID upload fields, with a measured 20000-byte ceiling.

JPG, PNG, WebP, HEIC, GIF or BMP · up to 40 MB

YOUR DOWNLOAD

Image settings

Changes update the preview automatically. Download when you’re happy with the result.

File size (KB or MB)

Choose whether the downloaded file needs to stay below a maximum size.

Maximum file sizeEnter any size, or choose a shortcut.

Your limit

Example: for “maximum 2 MB”, enter 2 and choose MB. The actual size is shown before download.

Reduce width and height if neededUse only if lowering quality cannot reach your file-size limit. Turn off to keep the dimensions you chose.Require less than this sizeTurn on for forms that say “less than”. Off allows a file exactly equal to your limit.

Target: at most 20 KB. Check the measured result below.

Download format

JPG works well for photos. Transparent areas use your selected background color.

Highest quality to try: 96%We may lower quality to meet your file-size limit. Higher values keep more detail.

Width, height & background

Change width and heightOff keeps the selected crop’s pixel dimensions. On lets you enter your own.

Background / border color#FFFFFF

Waiting for image

Add an image to begin—Your finished file will appear here.

File name

.jpg

Original stays untouched. Processing happens on this device.

HOW IT WORKS

How to use this tool

Choose an image or a batch of images.
Start with the 20 KB target and adjust the limit, format or permission to shrink dimensions.
Check the output preview and actual file size, then download. Batch mode applies the chosen settings to each file.

What happens to your image?

This target is 20000 bytes, using decimal KB. The optimizer searches quality before reducing dimensions. Fine text may become hard to read; crop out empty margins before reducing dimensions.

Your image is decoded and processed locally in your browser. Selected images and generated files are not sent to an image-processing server.

Will the downloaded file meet the limit?

Only a result measured within your limit is marked ready. If bounded optimization cannot reach it, raise the limit, reduce dimensions or change the output format.

Supported files and limits

Upload JPG, PNG, WebP, HEIC, GIF or BMP. Files must be at most 40 MB, 12,000 pixels on either side, and 40 megapixels. HEIC is decoded locally on demand. GIF conversion uses its first frame. Animated PNG/WebP and SVG are not supported. Batch processing accepts up to 30 files and 200 MB total.

Converted files do not retain original EXIF metadata or color profiles. You can clear the editor when finished.