Michael b86828d791 feat(pdf): visual region picker on rendered sample page
Phase 5/6. Adds a "Visual picker" tab as the first stop in the
template-build flow. The sample PDF page is rasterized with
``pypdfium2`` (capped at ~900px wide for sensible display), and
``streamlit-drawable-canvas`` overlays drawing tools on top.

UX:

- **Line mode** — drag short (roughly vertical) strokes where you
  want columns to split. Each stroke's x-midpoint becomes one
  boundary in PDF point coordinates.
- **Rect mode** — drag a rectangle around the transactions
  table; bbox is preserved on the template as
  ``visual.table_bbox`` for round-trip, future use as a hard
  crop region.
- **Transform mode** — move/resize already-drawn shapes after
  the fact.

Round-trip: re-entering Build mode with an existing template
seeds the canvas with full-height vertical lines for every
boundary already on the template, plus the saved bbox if any,
so editing-after-save matches the user's mental model.

Coordinate translation: the canvas reports pixel positions; we
divide by the renderer's pixels-per-PDF-point scale to get back
to PDF coordinates that ``apply_template`` already expects. No
template-schema change required — the boundaries the picker
writes are the same list the text-input editor wrote in
commit 3, just sourced visually.

New helper in the extraction module:

- ``render_page_image(pdf_bytes, page_no, target_width=900)`` —
  rasterize a single 1-indexed page to a PIL image; returns
  ``(image, scale)`` for coordinate translation.

The text-input boundary editor in the Columns tab remains as a
fallback for power users / keyboard-only workflows and for
copy-paste from spreadsheet-derived x-positions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-19 22:52:54 +00:00

🌐 Language: English · Español

DataTools

Local CSV / Excel cleaning. CLI + browser GUI, no cloud, no install ceremony. GUI ships with English and Spanish language packs.

Tools

# Tool Status
01 Find Duplicates — exact + fuzzy match, 5 normalizers, survivor rules, audit Ready
02 Clean Text — whitespace, smart chars, BOM, line endings, case ops Ready
03 Standardize Formats — dates, phones, emails, addresses, names, currencies, booleans Ready
04 Fix Missing Values — disguised-null detection, profile, mean/median/mode/ffill/bfill/interpolate, drop strategies Ready
05 Map Columns — fuzzy auto-rename, target schema with type coercion, required fields with defaults, drop/reorder Ready
06 Find Unusual Values Coming Soon
07 Combine Files Coming Soon
08 Quality Check Coming Soon
09 Automated Workflows — chain tools with recommended (not forced) order, save/load JSON, automate weekly cleanups Ready

Download (non-technical users)

Pre-built installers — no Python required:

Platform Download First-launch note
macOS DataTools-X.Y.Z-mac.dmg Drag DataTools.app into /Applications, then double-click.
Windows DataTools-X.Y.Z-win-setup.exe Run the installer; launches from Start Menu.
Linux DataTools-X.Y.Z-linux-x86_64.AppImage chmod +x the file, then double-click.

Latest release: see GitHub Releases (or the Gumroad listing). The installers are ~150200 MB; the launcher boots a local server at http://127.0.0.1:8501 and opens your browser. Nothing is sent to the cloud.

Install from source (developers)

pip install -r requirements.txt

Python 3.10+ required.

Run

GUI (recommended):

streamlit run src/gui/app.py

CLI — seven entry points:

python -m src.cli            customers.csv [--apply]   # dedup
python -m src.cli_text_clean messy.csv     [--apply]   # text clean
python -m src.cli_format     intl.csv      [--apply]   # format standardize (auto-streams >100 MB)
python -m src.cli_missing    holes.csv     [--apply]   # missing values
python -m src.cli_column_map vendor.csv    [--apply]   # column mapper
python -m src.cli_pipeline   any_file.csv  [--apply]   # chain tools end-to-end
python -m src.cli_analyze    any_file.csv  [--json]    # scan only

Every CLI runs preview-only by default; add --apply to write output.

Language

The GUI sidebar has a language picker. Packs ship for English and Español (src/i18n/packs/); the choice persists for the session. Adding a language: drop a <code>.json next to en.json mirroring its key tree, then list it in LANGUAGES. See Developer Guide §i18n.

Review & Normalize gate

Every uploaded file passes through a CSV-normalization gate before any tool sees it. The analyzer flags ~15 issue types (whitespace, NBSP / zero-width chars, BOM, encoding, smart punct, dirty headers, null sentinels, mojibake, …) tagged by confidence (high / medium / low) and fix action. The GUI shows each finding with Auto-fix / Skip / Customize, a live before/after preview, and an encoding-override picker. Tool pages refuse to load until the gate passes.

Output

Every run writes:

  • {input}_<tool>.csv — the cleaned data
  • {input}_changes.csv (text cleaner) or {input}_match_groups.csv (dedup) — audit trail
  • logs/<tool>_YYYYMMDD_HHMMSS.log — debug-level run log

Original input file is never modified.

Docs

Dependencies

pandas, openpyxl, rapidfuzz, phonenumbers, typer, loguru, charset-normalizer, streamlit. Optional: ftfy for mojibake repair.

License

Proprietary.

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