Excel Format Fidelity

    1

    Your spreadsheets, untouched down to the last border

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    Works with the AI tools you already use

    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIGitHub CopilotGitHub CopilotGemini CLIGemini CLI+20 more

    Excel Format Fidelity

    Example session with this skill installed

    I have a monthly_report.xlsx with complex merged headers and print areas. Please update the data in 'Sales Data' sheet from the attached CSV, keeping all formatting identical.

    • Read your context and instructions
    • Compiled the excel format fidelity

    I have updated the 'Sales Data' sheet in monthly_report.xlsx by copying the original file and modifying cell values to ensure 100% format fidelity.

    Excel Processing Log

    TaskMethodStatus
    File Persistenceshutil.copy of original workbookSuccess
    Data InsertionTargeted cell updates in 'Sales Data'Success
    Style Verificationverify_format.py vs OriginalPassed
    Print AreasValidation of ws.print_areaMatches
    Merged CellsVerification of 12 merged rangesMatches

    Format Verification Results

    The file was verified across 6 key metrics. All discrepancies were resolved:

    • Print Setup: Identical to source.
    • Merged Cells: All 12 ranges preserved.
    • Cell Fills/Fonts: Theme colors and font sizes (Gulim 9pt) confirmed.
    • Row/Column Specs: Manual heights and widths remain unchanged.

    Next steps

    1. Download the updated monthly_report_updated.xlsx.
    2. Note that charts/images were not present in the source; if added later, verify manually.
    3. Open in Excel to trigger formula recalculation for summary cells.
    MetricBeforeAfter
    Conversion1.8%3.4%

    Connects securely to your tools. The creator never sees your data.

    What you get

    Maintain exact print margins and headers for financial audit reports.Insert data into complex templates without breaking cell merges.Duplicate styled worksheets for new monthly reporting periods.Programmatically verify that output files match source styling exactly.

    About this skill

    Ever asked an AI to "just change one number" in your Excel report — and gotten back a file with broken merges, missing print areas, and the wrong font? That happens because AI rebuilds your spreadsheet instead of editing it. This skill fixes the problem at the root.

    What it does:

    🛡️ Copy, don't re-create. Enforces work paths that structurally preserve formatting — file copy for value edits, in-place sheet cloning for new monthly tabs, component-level style transfer only as a last resort. 🔍 Machine-verified delivery. Every output is fingerprint-diffed against the original across 6 dimensions: print area & page setup, merged cells, fill colors, row heights & column widths, fonts, and cell formatting (number format, borders, alignment). Zero unintended diffs, or it doesn't ship. ⚠️ Trap detection built in. One command (--inspect) flags elements openpyxl silently destroys — charts, images, VBA macros, pivot tables — before work starts, so you're never surprised. 📋 Battle-tested pitfall list. Encodes hard-won lessons: cross-workbook _style corruption, merge-then-style ordering, default-font (Normal style) mismatches, theme color quirks, LibreOffice number-format mangling.

    How to use it: Drop the folder into your skills directory. It triggers automatically whenever an existing .xlsx/.xlsm is the input — no need to say "keep the formatting." Includes two ready-to-run scripts: verify_format.py (diff & inspect) and clone_format.py (full-fidelity sheet cloning, including page setup).

    Who it's for: Anyone whose Excel files are documents — printed reports, official forms, monthly templates — where a shifted border or lost merge isn't cosmetic, it's a redo.

    How to install

    Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

    ~30 seconds
    1. 1

      Download the ZIP

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    2. 2

      Unzip into your skills folder

      Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.

    3. 3

      Ask your agent to use it

      Restart the agent if it was already running. It picks the skill up automatically - no config needed.

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    Click the path to copy it. Create the folder if it does not exist yet.

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    Recently published to Agensi

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    Verified clean 3 days ago

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    Listed3 days ago

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