Understand server-side QR signature validation
Meet the PNG, byte-size, image-dimension and non-blank checks performed after submission.
Exact navigationPublic QR page → Submit signature
Before you begin
- Use an authorised account and confirm the source CRM record or setting is correct.
- Follow the exact route shown above; do not force database values to imitate a completed action.
What this guide covers
Meet the PNG, byte-size, image-dimension and non-blank checks performed after submission. These instructions follow the supplied module’s live hooks, controller, model, view and validation flow.
Exact step-by-step process
- Draw the signature in the supplied canvas.
- Submit through the form rather than uploading an arbitrary file.
- If rejected, clear and draw a fuller signature.
Fields, choices and supported possibilities
Action scopeMeet the PNG, byte-size, image-dimension and non-blank checks performed after submission.
Module version2.1.0
NavigationPublic QR page → Submit signature
EvidenceConfirm the stored record, status, output, email, event or log produced by the code path.
Code-backed validations and workflow rules
- The value must be a data:image/png;base64 URL.
- Decoded PNG length must be between 150 and 750,000 bytes.
- The image must be a valid PNG with acceptable dimensions.
- Pixel analysis rejects a dot or effectively blank image.
Expected result and verification
- The requested record, output or setting is created or updated through the supported module flow.
- Any related status, count, email, audit/event, PDF/file or queue evidence agrees with the source action.
- An error message is investigated rather than bypassed.
Security, privacy and operational checks
- Apply least privilege and verify the correct customer, lead, sales document or recipient before processing.
- Protect public tokens, recipient data, IP/browser evidence, templates and exported files according to organisational policy.
- Test configuration changes with controlled records before production-wide use.
- Retain or delete evidence only under an authorised retention process.