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Text File Splitter

Split a big text file by line count, file size, or at a separator.

  • Free
  • No signup
  • Nothing uploaded
  • No watermark

Drop a file here

text files · read on your device, never uploaded

How to Use the Text File Splitter Online

Text File Splitter: before and after TXT A BEFORE TEXT FILESPLITTER TXT A AFTER

Pick how to cut: a fixed number of lines per file, a size in megabytes per file, or at a separator such as ---. The cut always lands on a line boundary, so a log entry is never sliced in the middle. A server log that makes your editor freeze becomes a set of files that open at once, with encoding and line endings left as they were.

Splits a big text file by line count, file size, or at a separator. Splitting a large log into manageable pieces is the common case — most editors struggle above a few hundred megabytes and simply stop responding.

No software to install Free Works on any device

Step-by-Step Guide to Using the Text File Splitter

  1. 1. Drop your file in, or click to choose one

  2. 2. Choose how to split it — by count, by size, or by a value in the file

  3. 3. Download the pieces one at a time, or all of them together as a ZIP

No .txt file to hand? Download a sample text and Markdown file (703 B) and try it.

Try it now

What is the Text File Splitter?

Splits a big text file by line count, file size, or at a separator. Splitting a large log into manageable pieces is the common case — most editors struggle above a few hundred megabytes and simply stop responding.

TXT files

.TXT .LOG .MD

Split a big text file by line count, file size, or at a separator.

At a glance

  • Takes: One .txt, .log or .md file
  • Gives: Several smaller text files
  • Split by: Lines per file, megabytes per file, or a separator you type
  • Keeps: Original encoding and line endings; whole lines only
  • Runs: Split in your browser; the file is not sent anywhere
  • Price: Free, no signup

Why Inspect a Document Before Sending?

A file can look fine on screen and still fail a portal check because of its version, page size, fonts or hidden permissions. Inspecting it first shows those details plainly, and the helper tools split, merge and shrink data and office files.

“Check the file before someone else rejects it.”
  • Page count and size at a glance
  • Version and standard checks
  • Hidden attachments brought out
  • Data files split or merged
  • Fonts and links listed
  • Permissions shown before you share
  • Office files made smaller
  • Excel formulas explained

Popular Uses for Document Checkers

These checks answer the questions people have about a file before it goes anywhere.

  • Print shop checks Confirm page sizes, orientation and PDF/X before sending artwork to a printer.
  • Archive submissions Check whether a PDF meets PDF/A before submitting it to a court or registry.
  • Counting pages and words Find the page count and word count of a PDF for a quote or limit.
  • Checking links List every link inside a PDF to find broken or outdated addresses.
  • Font problems See which fonts a PDF uses and whether they are embedded for printing.
  • Shrinking Office files Make a heavy Word, Excel or PowerPoint file smaller before emailing it.
  • Splitting large CSVs Cut a huge CSV or JSON file into parts that other tools can open.
  • Excel formula help Check a formula for errors or turn a column number into its letter.

What You Can Do with the Text File Splitter

Accepts TXT, LOG, MD

Understands TXT structure rather than treating the file as bytes

Splits on record boundaries rather than byte counts, so no row or object is cut in half

Preserves the original encoding and line endings instead of normalising them silently

Why Use ToolXkit for Text File Splitter?

Your files stay with you

Everything runs inside your browser. Nothing you open or type is uploaded to a server.

Document Inspection for Different Users

Printers and publishers

Check PDF/X, page sizes and fonts before a job goes to press.

Legal professionals

Confirm PDF/A compliance, page counts and permissions before filing documents on a court portal.

Translators

Count words in a PDF to quote a fair price for a translation.

Data analysts

Split, merge and count rows in CSV and JSON files too big to open.

Office administrators

Check file sizes, versions and security settings before uploading to portals.

Web teams

Extract links and bookmarks from PDFs before publishing them on a website.

Best Times to Check a PDF or Data File

Inspection tools are worth a look when you are:

  • Sending artwork to a printer
  • Filing papers on a court portal
  • Quoting a translation job
  • Opening a CSV too big for Excel
  • Checking why a PDF was rejected
  • Sharing a file with restrictions
  • Emailing a heavy PowerPoint deck
  • Auditing links in a brochure

Tips and Good to Know

  1. Size splits are approximate, because the cut moves to the nearest line end. Expect pieces a little under or over the megabytes you typed.

  2. A file with one enormous line, such as minified JSON, cannot be split by lines. Use JSON File Splitter for JSON, or reformat first.

  3. It does not filter. To keep only lines that match a word, use a text editor's search first, then split what is left.

Frequently Asked Questions

Answers to common questions about this tool.

Do I need to install anything to use the Text File Splitter?

No. Text File Splitter runs entirely in your browser — there is nothing to download, no extension and no desktop program. It works the same on Windows, macOS, Linux, Android and iPhone.

Is it safe to use the Text File Splitter online?

Safer than the usual alternative, yes. Most online tools upload your file to a server you know nothing about, where it sits until someone deletes it. Here the file never leaves your device — the processing happens in the page itself, so there is no server copy to leak, retain or sell.

Does Text File Splitter change my file?

The inspection tools only read the file and report what they find, so your document is untouched. Tools that split, merge or compress give you a new file and leave the original as it was.

What is PDF/A and do I need it?

PDF/A is a version of PDF made for keeping documents readable for many years. Some courts, government offices and archives ask for it. If a portal does not mention it, an ordinary PDF is fine.

Can I use Text File Splitter without signing up?

Yes. No account, no email and no fee. Drop in the file and the report or result appears on the page, ready to read or download.

Why was my PDF rejected by a portal?

Common reasons are a file that is too large, the wrong PDF version, a password, missing fonts or pages of the wrong size. Checking those details here usually points to the cause.

Further reading

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