Product updates

PDF scans now combine bounded structural checks, rendered visibility verification, selective English OCR, exact coverage reporting, and grouped results that retain every source finding.

• Added: Inspect additional PDF actions, forms, annotations, attachments, metadata, optional-content structures, transforms, and covered-text candidates without executing active content or opening embedded payloads.
• Improved: Select English OCR only for useful page regions, record page-level OCR provenance and outcomes, and keep scanning truthful when OCR is unavailable or reaches a safety limit.
• Improved: Compare selected visibility candidates with bounded rendered pixels while labeling the result as a candidate rather than proof of concealment or intent.
• Added: Show exact inspected, partial, and uninspected page numbers plus named detector-family and OCR capability states before findings.
• Accessibility: Group repeated PDF signals for easier navigation while retaining every stable finding ID, source record, location, excerpt, and export row.
• Privacy: Keep uploads isolated and temporary, preserve owner-scoped report and preview controls, and bound document, page, detector, geometry, OCR, and structure work.
• Documentation: Replace the homepage Python announcement with a short school and scanner-development update focused on the improved PDF and OCR workflow.

• Review the methodology
• Try the sample lab

Link to release 1.8.4v

Long PDF scans can now return clearly labeled verified partial results, while bounded background admission and annotated-output work protect capacity for other visitors.

• Fixed: Checkpoint completed PDF pages so a document timeout can return verified partial findings instead of discarding all completed work.
• Improved: Label partial reports with exact page coverage, omit annotated output for incomplete scans, and avoid presenting unscanned pages as clean.
• Fixed: Bound heavy-PDF admission so one large document cannot fill every background worker, while standard scans retain capacity.
• Fixed: Skip automatic annotated-PDF generation above the fixed page budget so optional output cannot keep a worker busy after scanning completes.
• Added: Separate completed, partial, timeout, memory-limit, and failed outcomes in private content-free operations reporting.
• Privacy: Failure timestamps are rounded to the UTC minute and retain only fixed document-type, stage, and safety-cause labels—never document content or identifiers.

• Review the methodology

Link to release 1.8.3v

PDF scanning now bounds dense page work, selects OCR only when useful, keeps textual findings when optional visual output fails, and explains safe recovery by failure stage.

• Fixed: Cache page structures and bound dense overlap work so pathological PDF pages have deterministic outcomes instead of repeated full-page analysis.
• Improved: Classify pages before OCR, skip decorative images, retain image-only extraction, and explain English-language OCR limits with fixed internal reason codes.
• Fixed: Show whether an upload stopped during validation, scanning, or report storage, with a specific safe next step and no internal exception details.
• Fixed: Reconnect temporary background-job status failures automatically and expose the completed report route so the same file does not need to be resubmitted for navigation problems.
• Improved: Preserve authoritative textual findings when optional annotated output is disabled, over budget, fails validation, or cannot be stored.
• Added: Compare complete seven-day PDF operations windows on the private admin dashboard while keeping the temporary issue notice gated on durable production evidence and operator review.
• Privacy: Retain only fixed aggregate buckets; controlled baselines exclude paths, content, exact durations, and individual scan records.

• Review the methodology

Link to release 1.8.2v

See a prominent upload reliability notice while aggregate, content-free failure counts help guide PDF scanner improvements.

• Fixed: Show a prominent notice above the developer update explaining that a file may fail or require one resubmission while the issue is investigated.
• Added: Track aggregate document scan failures by file type and broad failure category in the private admin usage dashboard.
• Improved: Show completed and failed document totals, UTC daily outcomes, and complete Logic Tools totals and daily tables on the private usage page.
• Privacy: Keep failure monitoring content-free: no filenames, document contents, findings, account identifiers, or submitted Logic Tools values are stored.
• Documentation: Add a staged PDF scanner reliability roadmap focused on measurement, reproducible fixtures, bounded parsing, detection coverage, and regression gates.

Link to release 1.8.1v

Explore digital logic with three clear workspaces, verified truth-table simplification, visual groups, two worked student guides and content-free activity counts.

• Improved: Keep Methodology beside Updates in the footer to simplify the main navigation, and explain how to retry a failed upload without treating a missing report as a clean scan.
• Added: Generate truth tables with intermediate values, row explanations and CSV exports; edit up to four inputs and verify canonical and exact minimum SOP equations against every row.
• Added: Explore two-to-four-input Karnaugh maps with Gray-code order, selectable groups and wraparound explanations.
• Added: Convert decimal numbers to binary, hex and standard ASCII, browse the ASCII chart, and calculate signed or unsigned fixed-width arithmetic and bitwise operations with overflow explanations.
• Accessibility: Choose clearly labeled Truth Tables, Number Converter and Binary Calculator panels, with keyboard navigation, mobile layouts and usable help links when scripts cannot load.
• Fixed: Keep navigation working when an individual tool fails to load, isolate status messages by tool, and reload matching templates during local previews.
• Documentation: Add worked guides to binary, hex, ASCII, truth tables, exact SOP and Karnaugh maps, with practice answers and documented methodology and size limits.
• Privacy: Keep inputs and results in the browser. Count only successful tool activities through content-free completion signals, with separate totals in the private admin dashboard and no entered values or results.

• Open Logic Tools
• Read the student guides

Link to release 1.8.0v