Excel and VBA tutorials from basics to practice — use the tools above as you go.
Code formatter / VBA → Python
Code generator / formatter / error checker
Formula generator / formatter / VBA → DAX killer feature
Personal easy-office tool series · Not affiliated with Microsoft
Unix ⇄ Local time
UTF-8 supported
Format · Validate · Generate Class
encodeURIComponent
Bidirectional · YAML 1.2
Parse Header / Payload / signature
Bidirectional · JSON bridge
Ajv engine · detailed error paths
5-field crontab · see next run times at a glance
v1/v3/v4/v5/v6/v7 + NanoID
Match highlighting + replace preview
Generate CREATE TABLE + INSERT
Multi-column · export xlsx
Multi-file UNION · header union
Finance standard · yuan/jiao/fen · wan/yi/zhao
xlsx → PDF on the server · files cleaned up after processing
docx → PDF on the server · files cleaned up after processing
pptx → PDF on the server · files cleaned up after processing
Multi-sheet · numeric right-align
By rows/count/column · ZIP bundle
1D barcodes + stacked 2D + batch ZIP export
Contacts .vcf · cross-platform
Calendar .ics · Google/Outlook ready
Map markers · Google Earth/Maps
CSV ⇄ JSON ⇄ Excel · parsed locally · BOM-aware export
Chars · Bytes · Words
Line / word level · ignore case / whitespace
GFM syntax · live preview
1-3999 · bidirectional
Encoding detection + mojibake repair to UTF-8
Dedupe / sort / Simplified↔Traditional / word frequency
Encode/decode + audio + flash/mic
Hide secret text in zero-width characters
case · trim · dedupe + camel/Pascal/snake/kebab/dot