Why signatures need such a small file size
SSC CGL, SSC CHSL, UPSC, IBPS, and most state PSC recruitment portals require a scanned signature well under a typical phone photo's size — commonly 10KB to 20KB, sometimes as low as 3KB or as high as 40KB depending on the exact form. These limits exist because the portals process millions of applications during peak recruitment windows and cap every upload aggressively to keep things fast. Always check your specific form's instructions for the exact figure, since it varies by exam and can change between recruitment cycles.
Pick a preset (10KB, 15KB, or 20KB) or type your exam form's exact target, and the tool automatically re-compresses your signature at many different quality levels until it finds the highest one that still lands at or under your target — so you get the clearest possible result for that size limit, not whatever a rough guess produces. A signature compresses far more cleanly than a photo at the same file size, since it's mostly flat white background with thin dark strokes.
What signature file size do SSC, UPSC, and IBPS actually require?
It varies by exam and changes between recruitment cycles, but 10KB to 20KB is the most common range for a scanned signature across SSC CGL, SSC CHSL, UPSC, IBPS, and most state PSC application forms — always double check the exact figure on your specific form's instructions before uploading, since a few portals ask for as little as 3KB or as much as 40KB.
How does this hit an exact KB size automatically?
It re-compresses your signature image at many different quality levels in your browser until it finds the highest quality that still lands at or under your target size, instead of you dragging a slider and guessing. If quality reduction alone can't reach a very small target, it also reduces the pixel dimensions and tries again.
Will a 10-20KB signature still look clear?
Yes — a signature is mostly flat white background with thin dark strokes, which compresses far more cleanly than a photo at the same file size. Scan or photograph your signature on plain white paper with good lighting for the sharpest result before compressing.
What's the difference between this and the general Compress Image to a Target Size tool?
Same underlying tool, just defaulted to the 10-20KB range and presets that match signature requirements specifically, instead of the 20-200KB range typical for photo uploads. If you need a photo compressed instead of a signature, the regular
Compress Image to a Target Size tool is the better starting point.
Is my signature uploaded anywhere?
No — every compression attempt happens locally in your browser using the Canvas API. Your signature image never leaves your device.