Exam Signature Scanner — Under-20 KB Export Tool
Turn a dark phone photo of your signature into a crisp, exam-portal-ready scan under 20 KB — whitened paper, solid ink, zero uploads.
Quick answer
Whiten paper, sharpen ink and export exam-portal-ready signatures under 20 KB. Draw on the pad or scan a photo — processed 100% locally in your browser.
Job Finder built Exam Signature Threshold Scanner as part of a complete, privacy-first application toolkit for job seekers in Nepal and beyond. Threshold-scan handwritten signatures to pure white paper and solid ink, then export exam-ready files under 20 KB locally. The tool runs entirely on your device: your files and inputs are processed inside the browser tab and never uploaded, so it also works offline once the page has loaded. Below you will find the frequently asked questions, step-by-step usage notes and the related guides that walk through the specifications this tool implements.
Exam Signature Scanner — Frequently Asked Questions
Direct answers about the 20 KB ceiling, shadow removal, the draw pad and ink colors. Tap any question to expand the full answer.
How do I get my signature under 20 KB for an exam form?
Photograph your signature on plain white paper in daylight, open the Exam Signature Scanner tab and upload the photo, move the Paper Whitening Threshold slider until shadows disappear, then export as JPEG or PNG — the output is guaranteed below the 20 KB ceiling most portals enforce.
How do I remove shadows and gray background from a signature photo?
The threshold slider converts everything lighter than the cutoff to pure #FFFFFF white and everything darker to solid ink. That single control erases phone-photo shadows, paper texture and gray glare while keeping your strokes crisp.
Can I draw a signature instead of scanning one?
Yes. The built-in draw pad produces a clean, high-contrast signature with an adjustable brush size, exported to exactly the same sub-20 KB exam specification as a scanned photo.
Which ink color should I use for exam portals?
Dark blue or black ink on a white background matches nearly every Nepali and Indian government form requirement. The scanner preserves your ink color while cleaning the paper, so your signature stays legally yours.
Why use Exam Signature Threshold Scanner on Job Finder?
100% private
Every file is processed inside your own browser. Nothing is uploaded to any server, so confidential certificates and photos never leave your device.
Free, no account
No sign-up, no watermark and no usage limit. Open the tool, prepare your file and download it — the whole workflow takes minutes.
Built for Nepal portals
Sizes, limits and date systems follow the specifications that Lok Sewa Aayog, universities and other Nepali portals actually enforce.
Ready to prepare your file?
Open Exam Signature Threshold Scanner in the interactive studio — free, private and works offline.