Compress Signature to 20KB

1. Upload your signature image (JPG, PNG; up to 50 MB).
2. The compressor automatically targets 20 KB or under.
3. Download the compressed signature.

20 KB is the standard signature size on exam portals (SSC, UPSC, IBPS) and government forms. The compressor iterates quality until the output is 20 KB or under.

Many Indian exam portals (SSC, UPSC, IBPS, RRB) and government forms require signature images under 20 KB. Manually compressing a scanned signature to hit an exact size is tedious and error-prone. Our tool iterates quality until the output is 20 KB or under — no guesswork, no failed form submissions.

The compressor decodes the signature image (JPG, PNG, or scanned), converts to JPG if needed, and iterates quality until the output is 20 KB or under. Signature detail is preserved at readable levels.

• Exam form signature upload (20 KB limit).
• Government application signature upload.
• ID verification signature.
• Job application signature upload.
• Bank account opening forms.
• Passport application signature.
• Any portal with a 20 KB signature limit.

20 KB is enough for a clear, readable signature. Expect 200-400px wide with quality 40-60%. Signature strokes are preserved at legible levels. Perfect for form uploads.

• 20 KB is tight — only suitable for simple signatures.
• Very detailed signatures may show softening.
• Transparency is lost (JPG output).
• Not suitable for print or high-resolution use.
• For higher quality, use a larger target size.

• Output JPG opens on every device and platform.
• Accepted by SSC, UPSC, IBPS, RRB, and most exam portals.
• Accepted by government application systems.
• Standard JPG — no special software needed.
• Works with every upload form.

• Scan the signature on white paper for best results.
• Crop tightly around the signature before uploading.
• Black ink on white paper compresses best.
• For higher quality, use a larger target size.
• Batch-compress up to 50 MB at once.

Need to hit an exact size? Use our dedicated target-size tools:

Signature looks faded after compression

Scan with higher contrast, or use black ink on white paper. Very faint signatures don't compress well.

Output is still slightly over 20 KB

Crop the signature image smaller first, or reduce dimensions.

Portal rejects the file

Check dimensions too — some portals require specific width/height ranges.

• SSC — Signature Upload Guidelines
• ITU-T T.81 — JPEG specification