Loading…
Skip to contentPrefix every line with a line number. Tentaco Add Line Numbers: review input and get an instant result — free, no sign-up.
Full tool — runs in your browser. No sign-up required.
Loading…
Prefix every line with a line number. Runs entirely in your browser — nothing is uploaded.
Paste or enter your input into Tentaco Add Line Numbers. Standard processing runs locally in your browser — contents are not sent to Tentaco servers for that path.
The primary button opens the matching studio mode so you can start without an account. People often search for: line numbers, number lines, zeilennummern.
Open Add Line Numbers via the studio button (direct mode).
Paste or type your input.
Adjust options and review the preview or output.
Copy or save the result and re-run if needed.
Transfer to Tentaco: No for the standard mode. Processing: local in the browser. Permanent storage: only if you copy or save the result yourself.
LocalThis tool processes data locally in your browser. Tentaco does not receive your file contents for this mode.
Add Line Numbers provides the function described in the intro directly in your browser — no installer.
No. Add Line Numbers processes the standard mode locally in your browser; Tentaco does not receive your input for that path.
No. Open Add Line Numbers and start immediately.
No. Add Line Numbers is a technical helper and does not replace legal, tax or professional advice.
Text Processing Hub online — free
Transform, analyze, extract and structure text — find/replace, trim, sort, count and more.
Text diff checker online — free
Compare two texts and highlight the differences line by line. Tentaco Text Diff Checker: review input and get an instant result — free, no sign-up.
Extract URLs online — free in your browser
Find and list all URLs in a block of text. Tentaco Extract URLs: review input and get an instant result — free, no sign-up.
Word Frequency Counter online — free
Count how often each word appears in text. Tentaco Word Frequency Counter: review input and get an instant result — free, no sign-up.
Extract Emails — regex email harvest
Pull all email addresses out of any text. Tentaco Extract Emails: review input and get an instant result — free, no sign-up.
Palindrome Checker online — free
Check if a word or phrase is a palindrome. Tentaco Palindrome Checker: review input and get an instant result — free, no sign-up.
Text Reverser online — free in your browser
Reverse characters, words or lines in text. Tentaco Text Reverser: review input and get an instant result — free, no sign-up.
Levenshtein Distance — string similarity
Compare two strings and measure edit distance. Tentaco Levenshtein Distance: review input and get an instant result — free, no sign-up.