Kar
le
Test Builder
1
Upload PDF
2
Crop Questions
3
Answer Key
4
Export
Build a Test Paper
Choose whether you want to create a CBT from a PDF or convert an exported ZIP package back into JSON.
PDF to CBT
Upload a question paper PDF, crop questions, then export JSON or ZIP.
ZIP to JSON
Upload an exported ZIP like PC TEST 11 and download a JSON with embedded images.
Drop question paper PDF here
or click to browse · supports any PDF
Browse PDF
Select Exam Pattern
Test Title
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Download Converted JSON
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⇕ Boundary
━ H-Lines
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↩ Undo
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Quality Example
— pages
💾 Save
📂 Restore
🔍 QC
? Keys
Question Paper
Select a question, then crop it
📋 Answer Key
Use the AI prompt below with your answer key PDF. Paste the AI's JSON response below.
Step 1 — Copy prompt → give to ChatGPT/Claude with answer key PDF
Copy
Step 2 — Paste AI's JSON response here
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Generate & Export →
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🎉
Test Ready!
Your test is packaged and ready to upload to Karle's Supabase Storage.
⬇ Download JSON
📦 Download ZIP
Upload the
JSON file
to:
Supabase → Storage →
tests/BITSAT/
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Edit Exam Config
Customize the exam pattern, marking scheme, and subjects.
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Custom Exam Setup
Define your subjects, question counts, and marking scheme.
Exam Label
Duration (min)
Subjects
Subject Name
Questions
+Marks
−Marks
+ Add Subject
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Create Exam
JEE Advanced Setup
Configure paper and sections per subject.
Which Paper?
Paper 1
Paper 2
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Apply
1
Box
2
Boundary
3
H-Lines
4
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Space
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D
Del line
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🔍 Crop Quality Report
Questions flagged for potential issues. Click any to jump to it.
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Crop Image Quality
Higher quality exports bigger crop images. Use it when formulas or small text look soft after cropping.
1x example
2x example
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Enhance Active Crop
Enhance All Crops
🔗 Multi-Page Question
Link a second crop (e.g. options on next page) to the active question. Both crops will be combined vertically into one image.
Drag a box on the PDF around the continuation, then click Link:
No second crop yet — drag a box on the PDF
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Link & Combine →
✦ inspired by pdf2cbt