Split Text

Text splitting — also called tokenization or segmentation — is the process of breaking a string into smaller units: characters, words, lines, sentences, or arbitrary chunks. Every spreadsheet import, log parser, translation pipeline, and API client eventually needs to turn one blob of text into a list you can process row by row.

SuperTextTools Split Text runs entirely in your browser. Paste any string, choose how to divide it, pick an output format, and copy or download the result — no upload, no account, and no server seeing your data.

Seven split modes

• Character — inspect or transform every glyph; useful for frequency counts and encoding checks. Emoji and combining characters count as one unit (code points), not UTF-16 code units.
• Word — the everyday choice for vocabulary and token counts; whitespace (spaces, tabs, newlines) acts as a single delimiter.
• Line — process logs, lists, and exports one record per row; handles Windows (\r\n), old Mac (\r), and Unix (\n) line endings.
• Sentence — split on . ! ? with protection for common abbreviations (Mr., Dr., U.S.A., etc.) — handy before translation, TTS, or readability scoring.
• Custom delimiter — when structure is known: CSV commas, pipe files, or multi-character separators.
• Regex — the most flexible mode; one pattern can match commas, semicolons, pipes, and optional surrounding spaces.
• Fixed length — chunk long IDs, tokens, or messages into equal visual character counts (default 80, up to 1000).

Common use cases

• Split a CSV row into columns when Excel is not available
• Turn comma-separated tags into a vertical Markdown list for a blog post
• Break a paragraph into sentences for a translation tool
• Chunk a long alphanumeric ID for visual inspection
• Parse API responses with custom field separators
• Clean messy exports where delimiters are mixed (regex mode)
• Prepare one-line-per-record imports into spreadsheets or databases

Trim and remove empty

Real-world data rarely arrives perfectly trimmed. Spaces around delimiters create noisy segments; consecutive delimiters (like ,,) produce empty strings. Trim each segment and Remove empty segments are on by default and handle the majority of cleanup automatically — trim runs first, then empty removal, then optional reverse order.

Output formats

• Lines — one segment per row; paste into spreadsheet column A
• JSON array — valid JSON for scripts and config files
• Comma-separated — human-readable inline list
• CSV (quoted) — RFC-style quoting with doubled internal quotes
• Numbered list — steps, rankings, instructions
• Markdown bullets — documentation and blog drafts

Performance and privacy

The tool is tested on large inputs (around 100k characters and beyond) without freezing the tab. Very large character-level splits may truncate the on-screen preview for performance while still computing full stats and export data. For files above roughly 10 MB, a desktop script or language runtime is usually faster — but everyday copy-paste workflows stay snappy here.

Keywords: split text, text splitter, split string, separate text, divide text, split csv online, split by delimiter, split by regex, text to array.