Reach one of the strictest image size limits (10KB) using advanced compression. Perfect for government portals, exam forms, and other tight upload requirements.
10KB
Exact Target
All Formats
Support
Smart
Two-stage Algo
Private
No Uploads
Drop image here to compress to 10KB
JPEG, PNG, WebP, AVIF, HEIC. All processing stays in your browser.
Three steps is all it takes. Everything runs in your browser so there is no waiting for an upload or server processing.
Set your target
The target is pre-set to 10KB. You can adjust it to any value if your portal has a different limit.
Drop your image
Drag and drop a JPEG, PNG, WebP, AVIF or HEIC file onto the tool. No upload happens. The file stays on your device.
Download the result
The tool runs a binary search over the encoder quality setting, then scales dimensions if needed. Download the compressed file immediately.
A 10KB ceiling is rare but not unusual on legacy government systems, older scholarship portals and forms that were built to serve users on very slow connections. It often appears on signature upload fields rather than photograph fields, because a scanned signature is a simpler image that compresses more aggressively.
What to expect at 10KB
At this size, a colour photograph will have visible compression and reduced dimensions. The image will still be clear enough for document submission. If quality is critical and the portal accepts 20KB or 50KB, use the higher target for better results.
10KB is genuinely tiny. To give you a sense of scale: a single second of a phone call audio file is roughly 8KB. A plain text email with no formatting is usually under 5KB. Getting a recognisable photograph into that space requires aggressive compression, and in most cases it also means reducing the pixel dimensions. The result won't look sharp at full screen, but that's not what these portals are asking for. They're asking for enough visual information to confirm identity or validate a signature, and 10KB is usually enough for that.
The most important thing you can do before compressing is check what the portal actually needs the image for. If it's a signature upload field, a scanned signature on a white background compresses extremely well because most of the image is plain white. A 400 by 150 pixel signature at 10KB will look perfectly clean. If it's a passport-style photo, expect some visible compression and a smaller output resolution, but the image will still be clear enough to submit.
JPEG compression works by identifying regions of similar color and encoding them together. A region of pure white takes almost no space because there's nothing to describe. A complex photograph with thousands of different colors and gradients takes much more. A black signature on a white background is almost entirely one color (white) with a small amount of detail (the black ink). That structure compresses to a tiny file size while keeping the actual signature legible. That's why signature upload fields so often have 10KB or even lower limits: they were designed assuming that's what would be submitted.
If the compressed result looks too degraded for your use case, and the portal doesn't explicitly say 10KB is the maximum, check the portal's help documentation. Many portals list a range, like "between 10KB and 50KB," which means you have room to use a higher target. Even going to 20KB or 50KB makes a significant difference in the output quality. The jump from 10KB to 20KB is roughly double the data, which at these small sizes translates to noticeably sharper results.
A 10KB image limit is typically found on forms that collect a digital signature scan, a small avatar or thumbnail, or a supporting document where the portal was designed around very low bandwidth. Some older government portals in South Asia and Southeast Asia also impose this limit on applicant photos. It is an extremely tight target and usually results in a small-resolution output.
At 10KB, image quality is noticeably reduced compared to the original, but the image remains clear enough for identity verification and form submission purposes. A signature scan or small avatar typically survives compression to 10KB with acceptable clarity. For facial photographs, the tool will also reduce the image dimensions to meet the target.
You can upload JPEG, PNG, WebP, AVIF and HEIC files. The output is either JPEG or WebP. JPEG is recommended for submission portals because it has universal support across all systems and browsers.
No. The entire compression process runs inside your web browser using JavaScript and the Canvas API. Your image never leaves your device. You can turn off your internet connection after the page has loaded and the tool will still work.
At targets as small as 10KB, reducing encoder quality alone is often insufficient for large source images. The tool first searches for the highest quality setting that fits within 10KB. If even the lowest quality produces a file that is too large, it progressively scales down the image dimensions until the target is met. This two-stage approach gives the best possible visual output within the constraint.
