Compress Image to 20KB — Free, Fast & Private
20KB is one of the strictest file size limits you will encounter — common for signature uploads and small profile photos on Indian government exam portals. UPSC, SSC, RRB, IBPS, state PSC, and various recruitment boards often require signature images between 10-20KB and passport photos between 20-50KB.
To hit 20KB, you need aggressive compression combined with dimension reduction. MiniPx makes this straightforward: use the Tiny preset (quality 40%), JPEG format, and set max width to 400-800px depending on the portal requirements. For signature images, 400px width with Tiny preset reliably produces files under 15KB. For passport-style photos, 640px width with Tiny preset typically achieves 15-25KB.
The key to reaching very small file sizes is reducing pixel dimensions. A 4000px wide phone photo compressed to 20KB would be extremely blurry. But the same photo resized to 400-640px width and then compressed looks perfectly clear at the small display sizes used by government portals. MiniPx handles both the resizing and compression in a single step.
MiniPx shows the exact compressed file size next to your image, so you can verify it meets the 20KB requirement before downloading. If you are still slightly over, reduce the max width further. MiniPx processes everything in your browser — your exam photos, signature scans, and identity documents never leave your device.
Common portals requiring photos under 20KB include: UPSC Civil Services, SSC CGL/CHSL, RRB NTPC, IBPS PO/Clerk, various state PSC exams, and university entrance exam forms. MiniPx works with all of them.