Document splitting

VerifiedSafe

Reads documents and splits them into manageable chunks based on line count, character size, markdown sections, or paragraphs. Supports overlapping chunks to maintain context. Useful for processing large files, analysis, or transfer tasks.

Sby Skills Guide Bot
Data & AIBeginner
6/2/2026
Claude Code
#split#document-chunking#text-processing#file-splitting

Recommended for

Automated summary

Reads documents and splits them into manageable chunks for processing, analysis, or transfer.

Strengths

  • Multiple splitting strategies (lines, size, sections, paragraphs)
  • Supports overlap to maintain context between chunks
  • Clear output with headers and summaries
  • Simple usage with intuitive options

Limitations

  • Only works on readable text files
  • Size-based splitting is approximate and breaks at line boundaries
  • Relies on line break or header structure
When to use it

When you need to break a large document into smaller pieces for sequential processing or analysis.

When not to use it

For binary files or when byte-precise splitting is required.

Security analysis

Safe
Quality score92/100

The skill only reads files and uses 'wc -l' for counting lines, with no network access, file modification, or command execution beyond the allowed tools. It presents no risk of data exfiltration, unauthorized access, or destructive actions.

No concerns found

How this analysis is made

Examples

Split by default lines
/split README.md
Split by markdown sections
/split document.md --sections
Split by lines with overlap
/split document.txt --lines 100 --overlap 10

name: split description: Read documents and split them into chunks allowed-tools:

  • Read
  • Bash(wc *)

Split Skill

Read documents and split them into manageable chunks for processing, analysis, or transfer. Like a master breaking boards, this skill shatters overwhelming information into fragments that can be easily mastered.

Capabilities

  • Split by Lines: Split files into chunks of a precise number of lines.
  • Split by Size: Split files into chunks of an approximate character count.
  • Split by Sections: Split at structural boundaries like markdown headers.
  • Split by Paragraphs: Split at blank line delimiters.
  • Support Overlap: Maintain context between chunks with an overlapping buffer.

Usage Examples

Split a file into standard chunks:

/split README.md

Split by precise line count:

/split document.txt --lines 100

Split by markdown sections:

/split document.md --sections

Split by paragraphs:

/split article.txt --paragraphs

Split with context overlap:

/split document.txt --lines 100 --overlap 10

Options

| Option | Description | Default | | -------------- | ------------------------------------ | ------- | | --lines N | Split every N lines | 100 | | --size N | Split at approximately N characters | - | | --sections | Split at markdown headers (# ## ###) | - | | --paragraphs | Split at blank lines | - | | --overlap N | Include N lines of context | 0 |

Output Format

Present each chunk with a header showing its number and line range:

══════════════════════════════════════════════════════
CHUNK 1 of 5 (lines 1-100)
══════════════════════════════════════════════════════

[chunk content here]

══════════════════════════════════════════════════════
CHUNK 2 of 5 (lines 101-200)
══════════════════════════════════════════════════════

[chunk content here]

Splitting Strategies

By Lines (default)

Split at fixed line intervals. Best for uniform content like logs or data files.

By Size

Split at approximate character counts, breaking at line boundaries. Best when targeting specific output sizes.

By Sections

Split at markdown headers (lines starting with #). Best for documentation. Each section becomes its own chunk.

By Paragraphs

Split at blank lines. Best for prose where paragraphs are the logical units.

Workflow

  1. Read the file using the Read tool.
  2. Get file stats using wc -l to show total lines.
  3. Apply splitting strategy based on options.
  4. Display chunks with headers and summaries.
  5. Show summary with total chunks and average chunk size.

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/document-splitting-mmh8qqd8/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/document-splitting-mmh8qqd8' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/document-splitting-mmh8qqd8/download' --output '.skill-downloads/document-splitting-mmh8qqd8/SKILL.md.part' && mv '.skill-downloads/document-splitting-mmh8qqd8/SKILL.md.part' '.skill-downloads/document-splitting-mmh8qqd8/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/document-splitting-mmh8qqd8/SKILL.md' && test -s '.skill-downloads/document-splitting-mmh8qqd8/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/split' && cp -R '.skill-downloads/document-splitting-mmh8qqd8' '.claude/skills/split'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/document-splitting-mmh8qqd8'

openskills read 'document-splitting-mmh8qqd8'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/document-splitting-mmh8qqd8/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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