Is 100 KB a normal signature size?

It is on the larger side. Many exam portals use lower signature limits such as 10–20 KB or 20–50 KB, so always check your form's own rule first.

How do I resize my signature to 100 KB?

Upload the signature image above. The tool resizes it to 600×200 px and adjusts JPEG quality automatically so the file stays under 100 KB.

My form needs a 100 KB photo, not a signature. Can I use this?

Use the 100 KB photo tool instead — this page uses a wide 3:1 signature shape that would crop a passport-style photo.

What if my form needs a smaller signature, like 10–20 KB?

Use the 10–20 KB or 20 KB signature tools linked below. Uploading a 100 KB file to a 20 KB field will be rejected.

Can I upload a PNG or a phone photo of my signature?

Yes. JPG and PNG files work, and the download is always JPG. Sign with dark ink on plain white paper for the clearest result.

Is my signature uploaded to a server?

No. ShantiTools processes the image entirely inside your browser — the file never leaves your device.

Signature resizer

Signature Resize to 100 KB — Signature Compressor Online

Upload a scan or phone photo of your signature and download a sharp JPG under 100 KB at 600×200 px. Processing happens on your device; nothing is uploaded.

File size

5–100 KB

Dimensions

600×200 px

Format

JPEG

Signature

600×200px · 5–100 KB

Choose signatureTap to pick from your gallery or cameraJPG or PNG · Runs on your device

🔒 Image processed on your device · Check your current form instructions

How it works

Upload a scan or photo of your signature (JPG or PNG, any size).
We centre-crop the image to 600×200 px and tune JPEG quality within 100 KB. Check the result is at least 5 KB; this minimum is not guaranteed.
Download and upload it after checking your current form requirements.

Everything runs on your device — your signature is never sent to a server.

Forms using this size

State recruitment boards
University portals
Bank KYC forms

Getting the scan right

•A 100 KB limit means you rarely need to compress hard — the main job is hitting the right pixel dimensions.
•If the portal also caps dimensions, check them before uploading; KB is only half the rule.

Frequently asked questions

Is 100 KB a normal signature size?: It is on the larger side. Many exam portals use lower signature limits such as 10–20 KB or 20–50 KB, so always check your form's own rule first.
How do I resize my signature to 100 KB?: Upload the signature image above. The tool resizes it to 600×200 px and adjusts JPEG quality automatically so the file stays under 100 KB.
My form needs a 100 KB photo, not a signature. Can I use this?: Use the 100 KB photo tool instead — this page uses a wide 3:1 signature shape that would crop a passport-style photo.
What if my form needs a smaller signature, like 10–20 KB?: Use the 10–20 KB or 20 KB signature tools linked below. Uploading a 100 KB file to a 20 KB field will be rejected.
Can I upload a PNG or a phone photo of my signature?: Yes. JPG and PNG files work, and the download is always JPG. Sign with dark ink on plain white paper for the clearest result.
Is my signature uploaded to a server?: No. ShantiTools processes the image entirely inside your browser — the file never leaves your device.

हस्ताक्षर का साइज़ कैसे कम करें

•फ़ॉर्म के लिए ज़रूरी साइज़: 5–100 KB, 600×200 पिक्सेल, JPEG फ़ॉर्मेट।
•सफ़ेद कागज़ पर काले या गहरे नीले पेन से हस्ताक्षर करें और अच्छी रोशनी में फ़ोटो लें या स्कैन करें।
•फ़ाइल चुनने के बाद उसका साइज़, पिक्सेल और प्रीव्यू फ़ॉर्म के नियमों से मिलाएँ।
•फ़ाइल आपके फ़ोन में ही बनती है, किसी सर्वर पर अपलोड नहीं होती। यह टूल पूरी तरह मुफ़्त है।