Text Tools
Every text tool you need — private, in your browser
Count words, change case, clean up lists, find and replace, compare versions and convert numbers or Markdown. 34 free tools that never upload your text — no signup, no limits.
All text tools
Popular text tools
- Word CounterLive word, character, sentence and paragraph counts with reading time.
- Case ConverterSwitch text between upper, lower, title, sentence, camel, snake and other cases.
- Remove Duplicate LinesKeep the first copy of each line and drop the repeats.
- Text Diff CheckerCompare two texts and see added, removed and unchanged lines, words or characters.
- Find and ReplaceReplace words or patterns in bulk with live preview, regex and several rules.
- Number to WordsWrite numbers and amounts in words, with lakh/crore or million/billion.
Count & Analyze
5 toolsWord Counter
Live word, character, sentence and paragraph counts with reading time.
Character Counter
Count characters with and without spaces and check them against a limit.
Word Frequency Counter
See which words you use most, with counts and percentages.
Reading Time Calculator
Estimate reading and speaking time at a speed you choose.
Keyword Density Checker
Find how often keywords and phrases appear and what share of the text they make up.
Case & Style
4 toolsCase Converter
Switch text between upper, lower, title, sentence, camel, snake and other cases.
Title Case Converter
Capitalize headlines and titles the way AP, APA, Chicago or MLA expect.
Fancy Text Generator
Turn plain text into bold, script, fraktur, circled and other Unicode styles.
Reverse Text
Flip text by characters, word order, each word or line order.
Clean Up Text
8 toolsRemove Extra Spaces
Collapse repeated spaces and tabs and trim every line.
Remove Line Breaks
Join broken lines into one paragraph, even from PDFs.
Remove Empty Lines
Delete blank and whitespace-only lines in one click.
Remove Duplicate Lines
Keep the first copy of each line and drop the repeats.
Remove Accents
Turn é, ü and ñ into plain letters.
Remove Punctuation
Strip punctuation marks, optionally symbols and emoji.
Remove Lines Containing
Delete every line that contains a word or pattern, or keep only those.
Strip HTML Tags
Turn HTML into clean plain text, safely.
Sort & Compare
6 toolsSort Text Lines
Sort lines A to Z, Z to A, by number or length, reverse them or shuffle.
Add Line Numbers
Number every line with your own start, step, padding and separator.
Text Repeater
Repeat a word, sentence or every line N times with a separator you choose.
Find and Replace
Replace words or patterns in bulk with live preview, regex and several rules.
Text Diff Checker
Compare two texts and see added, removed and unchanged lines, words or characters.
Join & Split Lines
Turn a column into a comma-separated list, or split a list back into lines.
Convert Text
5 toolsNumber to Words
Write numbers and amounts in words, with lakh/crore or million/billion.
Words to Number
Turn written-out numbers such as “two lakh fifty thousand” into digits.
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals to numbers.
Text to Binary
Convert text to binary, hex, octal or decimal bytes and back again.
Text to Slug
Turn titles into clean, URL-friendly slugs, many at a time.
Writing Helpers
2 toolsConvert Documents
4 tools- New
Text to Word
Turn plain text or Markdown into a downloadable Word .docx file.
- New
Markdown to HTML
Convert GitHub-flavored Markdown to clean, sanitized HTML.
- New
HTML to Markdown
Turn HTML into tidy Markdown: headings, lists, links, tables and code.
- New
Markdown Viewer
Write Markdown on the left and see the rendered page on the right.
34 tools shown
Workflows
Common jobs, done in a few steps
Clean up copied text
Fix text pasted from a PDF or email: spacing, broken lines, then duplicates.
Prepare a tidy list
Drop blanks, sort alphabetically and remove repeated entries.
Check an edit
Compare two versions, fix wording in bulk, then recount.
Publish Markdown to the web
Preview your Markdown, export HTML and build a clean URL slug.
Why Nelstack
Fast, private text utilities
Your text never leaves your device
Drafts, contracts, customer lists and passwords are processed in your browser — nothing is uploaded or stored.
Results as you type
Counts, conversions and cleanups update live, so you see the effect before you copy anything.
No caps or signup
No character limit from us, no daily quota and no account — paste as much as your browser can hold.
Copy, download or keep editing
One-click copy, download as a file, or send the result back into the input to chain another step.
Works offline once loaded
After the page loads, processing needs no connection, so tools keep working on a poor network.
Built for phones too
Large touch targets and a stacked layout make every tool comfortable to use on mobile.
Need a PDF from your text?
These live in PDF Tools and work the same private, in-browser way.
Text Tools FAQ
Are these text tools really free?
Yes. Every tool is free with no signup, no ads inside the tool and no usage limit. You can paste as much text as your browser can handle.
Is my text sent to a server?
No. Every Text Tool runs entirely in your browser. What you type, paste or open from a file is processed on your device and never uploaded, so drafts, contracts, passwords and customer data stay private.
Do the tools work offline?
Once a tool page has loaded, the processing itself needs no network connection. If your connection drops, you can keep pasting, converting and copying results.
Can I open a file instead of pasting?
Yes. Most tools have an Open file button for .txt, .md, .csv, .html and similar plain-text files. The file is read locally in your browser and is not uploaded.
Do the tools work on phones?
Yes. The layout stacks the input and result on small screens, buttons are sized for touch, and Copy uses your phone’s clipboard.
Where can I make a PDF from my text?
Use Text to PDF or Markdown to PDF in PDF Tools. They are linked from the Convert Documents section and use the same private, in-browser approach.