Compress Image to 20 KB

20 KB is the hinge value of Indian government forms: it's the upper limit for the signature box on SSC, IBPS and RRB applications (signature 10-20 KB) and simultaneously the lower limit for the photo on those same forms (photo 20-50 KB). One file has to sit right at that boundary, so a signature must be pushed up toward 20 KB and a photo squeezed down to it. This tool locks onto 20 KB from either direction, keeping your signature legible or your photo clear without any upload.

🔒 Everything runs in your browser — nothing is uploaded
Drag & drop an image
or click to browse — you can also paste (Ctrl/Cmd + V)
Compress to under 20 KB
JPG PNG WEBP

🔒 Your image never leaves your device — everything runs in your browser.

20 KB is the hinge value of Indian government forms: it's the upper limit for the signature box on SSC, IBPS and RRB applications (signature 10-20 KB) and simultaneously the lower limit for the photo on those same forms (photo 20-50 KB). One file has to sit right at that boundary, so a signature must be pushed up toward 20 KB and a photo squeezed down to it. This tool locks onto 20 KB from either direction, keeping your signature legible or your photo clear without any upload.

Good to know

  • Targets the 20 KB hinge that serves as both the signature ceiling and the photo floor on SSC/IBPS/RRB forms.
  • Lands just under 20 KB so the file passes whether the form treats it as a max or a min.
  • Keeps signatures sharp and faces recognisable by choosing the highest quality that still fits.
  • Accepts JPG, PNG or WebP and outputs the JPEG these recruitment portals expect.
  • Processes locally in the browser, so ID photos and signatures never leave your device.

Related image tools

Need more control? Use the full Compress Image tool to pick your own target, or Resize Image to change the pixel dimensions first.

How it works

Three steps. No sign-up, no upload, no wait.

1

Add your image

Drop in a JPG, PNG or WebP, click to browse, or paste it — nothing is uploaded.

2

Compress to 20 KB

The tool finds the best quality that still fits under 20 KB.

3

Download

Save the compressed image, ready to upload to the form.

🔒

Private by design.Everything happens right here in your browser. Your files are never uploaded — we never see them.

Frequently Asked Questions

Why is 20 KB such a common number on exam forms? ▼
On SSC, IBPS and RRB applications 20 KB is where two rules meet — the signature is capped at 20 KB (from a 10 KB floor) and the photo starts at 20 KB (up to 50 KB). That overlap makes 20 KB the single most requested compression target for sarkari applicants.
Should I compress my signature or my photo to 20 KB? ▼
Both use cases exist. If 20 KB is your signature's maximum, aim just under it. If 20 KB is your photo's minimum, you'll typically compress toward the 50 KB photo cap instead and only worry about 20 KB as the floor.
Can a colour photo look decent at 20 KB? ▼
Yes, for a standard head-and-shoulders exam photo, especially after resizing to the required pixel dimensions. The tool preserves as much detail as 20 KB allows.
My upload was rejected for being under 20 KB — what now? ▼
Some forms want the photo between 20 and 50 KB, so a file that's too small fails. Compress toward the higher end of that band instead, or use a larger source image.
Is my file sent to a server? ▼
No. Everything runs in your browser via a canvas. There's no upload and no account, so your documents stay private.

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