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Markdown Table Builder

Edits a table as a grid and emits aligned Markdown, or reformats a messy pasted table.

Builds a Markdown table in a grid you can edit, from a paste of a Markdown table, an Excel selection or a CSV. The padding is measured in terminal columns, so a table containing Hangul lines up instead of coming out ragged.

🔒 Runs entirely in your browsermarkdowntableformat

Paste a table

Read as a Markdown table, 3 columns × 3 rows.

A Markdown table, a paste out of Excel or Google Sheets, or a CSV — whichever you have.

Edit

Output

Format
Pipes
The padding is measured in terminal columns, not characters. 한글 takes two columns per syllable, so a table padded to a character count comes out visibly ragged in every editor — this one lines up.

How to use it

  1. Paste whatever you have

    A Markdown table, a selection copied out of Excel or Google Sheets, or a CSV. The line under the box says which it read it as.

  2. Edit in the grid

    Cells, headers, rows and columns, and the per-column alignment that Markdown encodes in the separator row. Edits are kept until you change the source text.

  3. Take it out as Markdown, CSV or HTML

    Padded Markdown reads well in a text editor; compact Markdown is shorter and renders identically. Both are valid.

Common questions

Why is my Korean table crooked elsewhere?

Because that tool padded to a character count. A Hangul syllable is one character and two columns, so a table padded by characters is visibly ragged in every monospaced editor. This one counts columns.

Does the padding change how it renders?

No. Markdown ignores the whitespace inside the pipes entirely — padded and compact render identically. It matters only for reading the source.

Can a cell contain a line break?

Not in a Markdown table — the format has no way to express one. A <br> works in most renderers because they pass raw HTML through, but that is an HTML feature rather than a Markdown one.

Feed it from

Markdown Editor

Edits Markdown with a live preview and exports the rendered HTML, with GFM tables and task lists.

Runs entirely in your browser

ASCII Table Generator

Renders a table as monospaced ASCII, Markdown or box-drawing borders for READMEs and comments.

Runs entirely in your browser

Case Converter

Converts between UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case and CONSTANT_CASE.

Runs entirely in your browser

Text Diff

Compares two texts side by side or inline, at line, word or character granularity.

Runs entirely in your browser

Next

These accept what this tool produces, so the result can go straight in.

ASCII Table Generator

Renders a table as monospaced ASCII, Markdown or box-drawing borders for READMEs and comments.

Runs entirely in your browser

CSV Viewer

Opens a large delimited file with type detection, column stats and sorting, without loading it all into memory.

Runs entirely in your browser

JSON ⇄ CSV

Flattens nested JSON into columns or rebuilds objects from a table, with a dot-path column naming rule.

Runs entirely in your browser

Markdown Editor

Edits Markdown with a live preview and exports the rendered HTML, with GFM tables and task lists.

Runs entirely in your browser

Find & Replace

Replaces text by literal, whole word or regular expression, with capture groups and a preview of every hit.

Runs entirely in your browser

Text Anonymiser

Finds emails, phone numbers, card numbers and IDs in free text and masks or pseudonymises them.

Runs entirely in your browser