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ExactKB

Railway RRB NTPC & ALP Photo and Signature Resizer

Format candidate photo (35x45 mm, 240x320 px, 20–50 KB) and signature (140x60 px, 10–20 KB) for Railway Recruitment Board exams.

Active Preset Loaded
1-Click Quick Exam Presets
Photo:20–50 KB(240×320px @ 200DPI)
Signature:10–20 KB(140×60px)
Color passport photo taken against a plain light/white background without cap/sunglasses.
🔒Processed 100% locally in your device RAM • Zero Cloud Storage
1

Passport Photo (Portrait)

240×320px • 200 DPI
20–50 KB
2

Candidate Signature (Landscape)

140×60px • 10–20 KB
10–20 KB

Pre-Flight Upload Verification

Real-time validation against official TCS & NIC upload specifications

Awaiting Verification
1. File SizePending
2. DimensionsPending
3. DensityPending
4. Color SpacePending
5. FilenamePending
Know fellow aspirants? Help them prevent form rejection:

Official Candidate Resources & Verification Portals

Railway Recruitment Control Board PortalIndian Railways

Official candidate notifications, admit cards, and application forms

RRB Online Application SystemOfficial Apply

Direct candidate portal for NTPC, ALP, and Technician registration

Frequently Asked Questions & Compliance Insights

Why do portals reject images under 20 KB?

Many online application systems enforce strict minimum byte thresholds to reject over-compressed photos. ExactKB injects benign JPEG COM comments to bring files safely above the minimum limit without modifying pixels.

Why is 200 or 300 DPI density required?

Automated portal validators inspect the APP0 JFIF header. Standard smartphone photos default to 72 or 96 DPI, causing automated rejections. ExactKB writes standard 200/300 DPI headers directly into the stream.

How does ExactKB guarantee privacy?

All image compression, HEIC decoding, thresholding, and name/date stamp overlays run 100% locally in your browser’s volatile RAM. No image data is ever uploaded to any server.