Why Percerno Skills

What it lets an ordinary office worker do

An AI assistant writes text. It cannot open a PowerPoint, redline a contract, recalculate a workbook or sum 100,000 rows, and most people on a managed laptop cannot either. Percerno gives the assistant hands: one link, real tools on our servers in the EU, the finished file back. Each card: what you say, what you get, and what it takes without us.

Word documents

letters, contracts, reports, redlines · 8

Bulk Letters

I uploaded a letter template with {{name}}, {{company}} and {{price}} and a CSV of 180 customers. Make one PDF per customer, zipped.

You get: One letter per person, Word or PDF DOCX

Without Percerno
Word's Mail Merge wizard needs a data source connection, field matching and a working Word install; most people end up copy-pasting names into 180 documents by hand, or give up.

Compare Documents

What changed between report.docx and report-v2.docx? Give me the differences as a Word file too.

You get: A diff as Markdown and Word DOCX

Without Percerno
Word's Compare needs Word installed and the two files open side by side; the assistant alone would have to read both in full and would still miss changes.

Contract Redline

I uploaded our consulting agreement. Change the notice period from 30 to 45 days, cap liability at 12 months of fees, and add a comment on the interest clause asking Finance to confirm. Track the changes as 'Legal review' and give me the docx and a redline PDF.

You get: The redlined contract and a PDF DOCX

Without Percerno
You would open Word, switch on Track Changes, make every edit and comment by hand, then print the markup to PDF; on a managed laptop without Word, or with a document someone sent as a link, you cannot.

DOCX Writer

Write a letter as a Word file from Nordisk Widgets ApS to Nordisk ApS about our new price list from 1 January, signed by Lars Jensen.

You get: A Word document DOCX

Without Percerno
You paste the assistant's text into Word and fix headings, tables, fonts and the letterhead yourself; on a locked-down laptop without Word you cannot produce the .docx at all.

Find Replace Files

How many times does 'Nordic' occur in report.docx and deck20.pptx?

You get: The changed files DOCX

Without Percerno
Open every Word, PowerPoint and Excel file one by one and use Find and Replace in each; the assistant alone cannot open the files.

Word Craft

Convert report.docx to PDF.

You get: The converted or edited document DOCX

Without Percerno
Tracked changes, page renders and .doc/.rtf conversions need Word installed; the assistant alone cannot write tracked changes into a file.

Word Finish

I uploaded our 40-page market report. Add a table of contents, number the headings and put page numbers in the footer, then give me the Word file and a PDF.

You get: The finished document and a PDF DOCX

Without Percerno
In Word this is References › Table of Contents, Insert › Page Number, Insert › Cover Page and a multilevel list bound to the heading styles, then Update Fields; it takes a confident Word user ten minutes and most people a frustrating hour, and on a laptop without Word it is not possible at all.

Contract And Proposal Writeropen source

Draft a fixed-price freelance contract for a web app build in Delaware, with 50% upfront payment.

You get: A DOCX file DOCX

Without Percerno
You paste the assistant's text into Word and lay out the proposal yourself; without Word on the laptop there is no .docx.

Presentations

decks built, restyled, fixed, previewed · 12

Deck Builder

Make a 6-slide PowerPoint about the benefits of on-premise AI for a Danish SME, with speaker notes.

You get: A PowerPoint file (and a PDF if you ask) PPTX

Without Percerno
You open PowerPoint, pick a layout for every slide, type and place every box, then export a PDF; the assistant alone only gives you text to paste in.

Deck Craft

Give me a PDF handout of deck20.pptx, three slides per page.

You get: Slide images, a PDF or the edited deck PPTX

Without Percerno
You need PowerPoint installed to render slides, print handouts or edit a deck; the assistant alone cannot open a .pptx and hand you a changed one back.

Deck From Template

Make the Q3 board deck in our template deck-template.pptx: title, results (revenue 48.2 MDKK +12 %, EBITDA 6.1), customers (312, churn 4.1 %), two risks, three decisions, thank-you slide. Add speaker notes and show me the first slides.

You get: A deck in your template PPTX

Without Percerno
On a managed Windows laptop you open the template in PowerPoint, add slides one by one, pick the right layout each time and type everything in; without PowerPoint, or with a template you are not allowed to install, you cannot.

Deck Restyle

I uploaded deck20.pptx and our company template deck-template.pptx. Put all the slides into our template so they look like our other decks, and show me the first three slides.

You get: The restyled deck with previews PPTX

Without Percerno
On a managed Windows laptop this is an afternoon in PowerPoint: Design tab, browse for the template, then fix every slide that did not take the layout; with a locked-down machine or no PowerPoint you cannot do it at all.

Slide Fixes

I uploaded deck-chart.pptx. Remove every animation and transition, add slide numbers and the footer 'Nordisk Widgets · Confidential', and make all text Carlito.

You get: The cleaned deck with previews PPTX

Without Percerno
On a managed Windows laptop each of these is a different PowerPoint menu, applied slide by slide; twenty slides of animations alone is half an hour of clicking, and without PowerPoint you cannot touch the file.

Board Deck Builderopen source

Create a Q3 board deck for our Series B SaaS company. We missed ARR by 10% due to enterprise delays, but NRR is up. Include the financial variance explanation.

You get: A PPTX file PPTX

Without Percerno
You build the board deck slide by slide in PowerPoint from the numbers; the assistant alone gives you bullet text to paste.

Designopen source

Create a minimalist logo for a tech startup called 'Nexus' using a blue and white palette.

You get: A PPTX file PPTX

Without Percerno
A brand guide as a PDF with colour values and logo rules needs a designer's tools; the assistant alone describes it in words.

Make Revealjs Presentationopen source

Create a RevealJS deck for my talk on 'Async Patterns in Node.js' using the standard template.

You get: A PPTX file PPTX

Without Percerno
HTML slide decks need a build tool and a browser setup nobody has on a managed laptop; here you get the finished deck as a file.

Marp Slideopen source

Create a 10-slide Marp presentation about the history of the internet using the tech theme.

You get: A PPTX file PPTX

Without Percerno
Marp needs Node and a command line; here the Markdown becomes a slide file without installing anything.

PPTX Generatoropen source

Create a 10-slide pitch deck for a SaaS startup using a modern blue and white color palette.

You get: A PPTX file PPTX

Without Percerno
Editing an existing deck programmatically needs PowerPoint or a developer toolchain; the assistant alone cannot open the .pptx.

Sales Enablementopen source

Create a 10-slide pitch deck for our new SaaS product targeting CTOs at mid-market companies. Focus on security and integration capabilities rather than just ROI.

You get: A PPTX file PPTX

Without Percerno
The one-pager or battlecard is typed into Word or PowerPoint by hand from the assistant's text; here it arrives as the file.

Slidesopen source

Create a 10-slide HTML pitch deck for our SaaS startup, including a Chart.js graph of user growth.

You get: A PPTX file PPTX

Without Percerno
The deck is built by hand from an outline; here the outline becomes the .pptx in one request.

Spreadsheets and data

workbooks, pivots, audits, 100,000-row files · 7

Csv Query

What is in sales-100k.csv? Columns, number of rows, a few sample rows.

You get: A table as CSV, Excel or text XLSX

Without Percerno
A 100,000-row file does not fit in the chat and chokes Excel on a laptop; here DuckDB answers in seconds and the model sees one line.

Extract From Text

Pull every e-mail address and phone number out of contacts.txt into a CSV.

You get: A CSV of the values found CSV

Without Percerno
Read the files yourself or paste them into the assistant, which costs tokens and retypes values; here a tool scans the files and the model never sees the text.

Grid Craft

Verify that every formula in this workbook recalculates to the saved values.

You get: A verified or edited workbook XLSX

Without Percerno
Recalculating and checking a workbook needs Excel; the assistant alone cannot open an .xlsx, let alone verify its formulas.

Merge Split Files

Split sales-100k.csv into one file per region.

You get: One merged file, or one file per group XLSX

Without Percerno
Copy-paste twelve files into one sheet, VLOOKUP two tables together, or split a file by hand; the assistant alone cannot touch the files.

Pivot And Chart

I uploaded sales.csv. Make a pivot table of units by region and product with a column chart, and give me the Excel file.

You get: The workbook with pivots and charts XLSX

Without Percerno
On a managed Windows laptop this is twenty minutes of clicking through Insert › PivotTable, Chart, Data Validation, Conditional Formatting and Page Setup, each with its own dialog, and most people never learn pivot tables at all; without Excel installed it is impossible.

Sheet Builder

Turn sales-100k.csv into an Excel workbook with a summary of units per product and a chart.

You get: An Excel workbook with formulas XLSX

Without Percerno
You import the CSV into Excel, build the summary with SUMIFS or a pivot, insert the chart and fix the formatting by hand; the assistant alone cannot give you an .xlsx at all.

Workbook Audit

I uploaded our 2027 budget workbook. Check every formula and tell me where the numbers are wrong or typed in by hand.

You get: An audit report and a verified copy XLSX

Without Percerno
On a managed Windows laptop you would open the workbook, press F9, scan every column for formulas that look different, use Formula Auditing cell by cell and hope you catch the number someone typed over a formula; there is no built-in report, and a locked-down machine often has no Excel add-ins allowed.

Files and text

convert, merge, compare, extract, PDFs · 4

List Cleanup

I saved a messy list of names and e-mails as list.txt: remove the duplicates, ignoring case and spacing.

You get: The cleaned list or table TEXT

Without Percerno
Dedupe and count by hand in Excel with Remove Duplicates and COUNTIF, or ask the assistant and get a list it typed back with mistakes; here the file is cleaned by a tool, not retyped.

Office Convert

Save report.docx as PDF.

You get: The file in the format you asked for PDF

Without Percerno
Install LibreOffice or buy Adobe to convert between formats; on a managed laptop you often cannot install anything, and the assistant alone cannot convert files.

PDFopen source

Generate a professional invoice PDF for client ID 402 using the data in `data/invoices.json`.

You get: A PDF file PDF

Without Percerno
Making, splitting or filling PDFs needs Acrobat or a Python toolchain; the assistant alone cannot hand you a PDF.

PDF To Markdownopen source

Convert the attached quarterly report.pdf into a markdown file.

You get: A PDF file PDF

Without Percerno
A scanned PDF has no text to copy; OCR software must be installed, and pasting pages into the chat costs tokens and accuracy.

We started from 452 open-source skills, measured every one against the assistant alone, kept the ones that deliver something typing cannot, and built the rest ourselves: 31 today, each tested weekly through a real assistant. Everything runs in a sandbox in Stockholm; files are deleted when you are done.