Free, no upload required
Compress any image to under 20KB entirely in your browser. A 20KB limit is common for signature image uploads, small avatar fields and certain government portal photo requirements.
No uploads
Files stay on your device
Any format
JPEG, PNG, WebP, HEIC
Exact target
Binary search algorithm
Drop image here to compress to 20KB
JPEG, PNG, WebP, AVIF, HEIC. All processing stays in your browser.
A 20KB limit is one of the strictest size requirements you will encounter. It is most common for signature images, small avatar fields and specific government portal photographs where storage is extremely limited.
Signature image uploads
Many official forms require a scanned signature as a separate image, often capped at 20KB.
Government portal profile photos
Certain national and regional portals impose a 20KB limit on applicant photographs.
Small avatar and icon fields
Some membership and forum systems restrict profile images to 20KB for storage efficiency.
Exam and application portals
Competitive exam registration systems commonly require a photograph under 20KB alongside a signature under 10KB.
A 20KB limit is used by systems where storage is extremely constrained or where the image is only displayed at very small sizes, such as a signature field or a small avatar thumbnail. Exam portals and government ID systems are the most common examples.
At 20KB, a typical portrait photograph will show noticeable compression at close inspection but will be fully readable at the small sizes these portals display it. Signature images at 20KB are generally indistinguishable from the original.
JPEG, PNG, WebP, AVIF and HEIC are all supported as input. The output is JPEG or WebP depending on your selection. JPEG is the safest choice for submission portals as it is universally accepted.
No. All compression happens entirely in your browser. Your image never leaves your device. You can verify this by disconnecting from the internet after the page loads, the tool still works.