Line Tools
Number, prefix, suffix, join, split, or count the lines in your text — a full line-editing toolkit in one page.
Disclaimer. This tool is provided for informational purposes only. Verify important results independently. Read full disclaimer →
About Line Tools
Line-level text manipulation includes adding line numbers (useful for code sharing and document referencing), removing empty lines, joining multiple lines into one (with customisable separator), splitting a single line into multiple lines at a delimiter, adding a prefix or suffix to each line, and extracting lines matching a specific pattern.
Practical applications: adding line numbers to code snippets before sharing in a document or presentation; extracting all email addresses from a text file by filtering lines matching the email pattern; joining CSV rows into a single line for API payloads; adding a consistent prefix like "- " to convert plain lines into a bulleted list; splitting a long string of comma-separated values into one value per line for easier editing. These line-level operations complement regex-based tools for comprehensive text processing.