Merge two CSV files on a shared key column — join related exports into one sheet. Combine two tables without spreadsheets — local merging, free, no signup.
Content reviewed October 2026 · About Toolzum
Pivot CSV rows into summary tables — group, count, and sum without spreadsheets. Summarize 10k sales rows by region instantly — local pivoting, free, no signup.
Flip CSV rows and columns — wide tables to long form for analysis. Pivot stubborn exports without Excel gymnastics — local transposing, free, no signup.
Extract CSV columns by name into clean lists. Pull email and name columns from pasted CSV in seconds — local parsing, free, no signup.
Pull tables, form fields, and key-value pairs from stacks of PDFs into one clean CSV. Accountants turn 60 invoices into a spreadsheet in an afternoon — local pdf-lib parsing, 2 free batches a day.
Join up to 100 PDFs into one document per Pro run with order control and preserved links. Legal teams bind 40 exhibits into one filing — local pdf-lib merge, 2 free batches a day.
The key column must exist in both tables. Non-key columns from the second table are appended; left rows with no match get blanks.
Two tables per run — a left and a right CSV joined on the key. Repeat runs to join more.
No dedupe step is included — overlapping keys keep the first right-table match. Review the joined output before analysis.
No — merging runs locally in your browser. Data never leaves your device.
Left join: every left row survives, right-only keys never appear, and unmatched left rows get blank right cells. Headers become left columns plus right non-key columns — the default name-key demo yields name,email,department.
CSV Splitter
Split CSV data into equal parts with headers in every chunk. Break large pastes into smaller pieces — local splitting, free, no signup.
CSV Transpose
Flip CSV rows and columns — wide tables to long form for analysis. Pivot stubborn exports without Excel gymnastics — local transposing, free, no signup.