Why this tool exists
Line Numbering Lab keeps prose, transcripts, and log snippets perfectly referenced so collaborators never guess which lines you are discussing.
Code review callouts
Share numbered stack traces, config diffs, or docs so everyone references the same lines while pairing.
Support transcripts
Add numbering to troubleshooting steps, ticket updates, or QA scripts to reduce back-and-forth.
Legal + compliance packets
Pad lines to double digits for exhibits, affidavits, and discovery attachments that demand precise citations.
Quick start
Pick your starting value, decide how padding should look, and copy the numbered output—all within one submission.
- Open Line Numbering Lab, paste your text (or load a sample), and choose the starting number that matches the excerpt you are sharing.
- Pick a padding mode—Auto, No padding, or Fixed width—and decide how blank lines should behave before submitting.
- Submit the form to refresh the numbered output, skim the metrics panel, then copy the finished block into docs, IDEs, or tickets.
Supported inputs
- Accepts multiline logs, transcripts, CSV exports, or markdown. Spacing, emoji, and indentation stay untouched unless you change the blank-line option.
- Normalizes Windows, Unix, and legacy Mac line endings but preserves trailing newlines if the source had them.
- Runs server-side, so long payloads and Unicode-heavy snippets keep numbering consistent regardless of browser.
Mode 01
Numbering controls
Fine-tune starting offsets and padding so the numbered output lines up with the publication or ticket you are preparing.
- Starting line accepts any value between 0 and 100000 so you can continue numbering mid-document or match deposition exhibits.
- Auto pad calculates the necessary width based on the highest line number, keeping columns aligned as snippets grow.
- No padding mirrors natural numbering, which is ideal for prose or transcript reviews where leading zeros get in the way.
- Fixed width locks the digit count (1–8) so you can produce clean double- or triple-digit formatting for legal packets or code exports.
Mode 02
Blank-line strategy
Choose whether empty rows stay visible, disappear, or earn their own numbers before you copy the output.
- Skip blanks removes empty rows entirely for compact SQL, CSV, or CLI output.
- Keep blanks preserves spacing between paragraphs but skips numbering those empty lines, which is perfect for release notes or transcripts.
- Number blanks assigns identifiers even when no characters exist on that row, matching the requirements many legal exhibits expect.
Outputs & metrics
The results column mirrors exactly what you will paste, while the metric cards confirm how the text was processed.
Numbered output
- Numbered text card shows the processed block with a dedicated copy button plus confirmation state for batching.
- Formatting happens server-side, so tabs, emoji, and multibyte characters keep their alignment while only the prefix changes.
- Copy indicator resets when you adjust options, making it obvious that you are working with the latest numbering run.
Metrics panel
- Metrics summarize total versus numbered lines at a glance so you instantly know whether blank lines were skipped.
- The panel refreshes with every submission, helping you compare different blank-line strategies without scrolling through the entire output.
- Cards mirror the accent colors used across the tool, which makes screenshots and ticket attachments easier to scan.
Field notes
Keep numbering workflows predictable with these quick habits.
- Use the quick sample panel to load preset texts showing auto padding, fixed widths, and blank-line modes in action.
- Increase the starting line when you share just the tail of a log or deposition—no renumbering needed later.
- Switch to fixed width before generating exhibits or PDF attachments so the numbering stays perfectly aligned.
- Pair Line Numbering Lab with Counting + Stats or Whitespace Utilities when prepping publication-ready transcripts.