① Upload a file→② Configure options→③ Generate QR codes→④ Review & export
Drop a file here or click to browse
Any file type — larger files are automatically split into volumes
▸ Optional Security & Recovery Settings
What is Shamir's Secret Sharing?
SSS splits your data into multiple shares so that no single share contains
any usable information. Only when enough shares are brought together can the original
file be recovered — like a vault that requires multiple keys to open.
When to use it: When you want to protect data
against theft or compromise. Store shares in separate locations — an attacker who
finds one share learns nothing about your data.
⚠ This is NOT the same as multi-volume splitting.
Large files are automatically split into numbered volumes (e.g. "Volume 1 of 3") because they
don't fit in one — every volume is required and each contains readable data.
SSS shares are cryptographically split — each share is meaningless on its own and only a
subset (the threshold) is needed.
Generates 3 shares. Any 2 are enough to recover the file — you can lose up to 1.
⚠️ CRITICAL SECURITY RULES:
• Store each share in a separate physical location.
Never store multiple shares together.
• If you lose more than 1 share(s),
your data is permanently unrecoverable. There is no backup or recovery option.
• Each share alone reveals nothing about the original data — this is by design.
Shamir's Secret Sharing is only available for files up to 1 MB.
What is Error Recovery?
Adds extra parity QR codes that can reconstruct any single missing code per group.
If a page gets damaged or a code won't scan, the parity code fills the gap.
Overhead: ~10% more QR codes (1 parity per 10 data codes).
1 parity code per 10 data codes (~10% overhead)
⚠️ Settings changed — click Generate QR Codes to apply.
0%
Share:
Page 1
QR page layout only — cover and instruction pages are added during PDF export.
Page 1
▸ Developer Tools
Generates random test data and verifies the full encode/decode pipeline.