Compress image to 20 KB
Shrink photos and pictures to under 20 KB. Free, private, and nothing is uploaded.
1 Drop the picture. The format and size goal on this page are already chosen.2 The browser encodes a new file. The original on disk is not overwritten.3 Read the status line for the size you got, then look at the subject before you send it.
About this tool
Twenty kilobytes fits a small avatar or a simple diagram. A photo of a document loses the small type before it hits this size. The page scales the long edge, then lowers JPEG or WebP quality, and reports the size it actually reached.
Compress image to 20 KB is processed entirely on your device. Your original file remains untouched, and nothing is ever uploaded to a server or saved in the cloud.
- No upload: the pixels never go to an image host.
- Speed: processing happens instantly on your device with no upload or download delays.
- Quality: you can check your file before saving, and the original remains unchanged.
FAQ
How do I compress an image to under 20 KB?
Choose or drag your image into Weesize. The tool automatically sets the target size to 20 KB, adjusts the pixel dimensions, and applies balanced compression locally in your browser.
What image formats can be compressed to 20 KB?
Weesize supports JPEG, PNG, WebP, and AVIF. For a 20 KB target, JPEG and WebP produce the cleanest results for photos and avatars.
Will compressing to 20 KB blur faces or text?
At 20 KB, pixel dimensions are reduced to fit the tight file budget. For passport headshots and avatars, faces remain clear and recognizable. Highly detailed text or fine line drawings are better suited for 50 KB or 100 KB.
Are my photos uploaded to a cloud server to shrink them?
No. Everything runs in your browser using canvas and WebAssembly. Your photos never leave your device.
Can I compress images to 20 KB without an internet connection?
Yes. Once the page is loaded, the image compressor works completely offline, with zero network requests.
Compress ImageImages to PDFCompress PDFPNG to JPGJPG to WebPWebP to JPG
Compress ImageCompress image to 10 KBCompress image to 30 KB
Best image format for the webHow to shrink photos for applicationsCompress images for email
Last updated 2026-09-27.