Xonvert · Tools · Text

Text tools — 37 free, in your browser

Clean, transform, encode, decode, format, and analyze text — handles files larger than most online editors via stream processing.

Most popular

All text tools

UPPERCASE
Convert any text to UPPERCASE — instant.
lowercase
Convert text to lowercase — fast and private.
Title Case
Capitalize the first letter of every word in a smart, modern way.
Reverse Text
Reverse a string, line, or paragraph — Unicode-safe.
Sentence case
Capitalize the first letter of every sentence — instant.
camelCase
Convert any text to camelCase identifiers.
PascalCase
Convert any text to PascalCase identifiers.
snake_case
Convert any text to snake_case identifiers.
kebab-case
Convert any text to kebab-case identifiers (URL-safe).
URL Encode
Percent-encode any string for safe use in URLs.
URL Decode
Decode percent-encoded URLs back to plain text.
HTML Entities
Encode or decode HTML entities — toggle direction.
ROT13
Classic letter substitution cipher — encode and decode are the same.
Add Prefix
Add a prefix to every line — bullet points, comments, anything.
Add Suffix
Append a suffix to every line — punctuation, tags, anything.
Add Line Numbers
Number every line — 1, 2, 3 — with custom format and padding.
Add Line Breaks
Wrap text at a given column or insert line breaks every N words.
Remove Empty Lines
Strip blank or whitespace-only lines from any text.
Remove Duplicates
Dedupe lines — case-sensitive or insensitive, preserving order.
Remove Extra Spaces
Collapse runs of whitespace and trim each line.
Remove Numbers
Strip every digit (or every numeric token) from any text.
Remove Letters
Keep numbers and punctuation, strip every letter.
Sort Lines
A–Z, Z–A, by length, or numerically — case-aware.
Reverse Line Order
Flip the order of lines — last becomes first.
Find & Replace
Plain-text find and replace with case-insensitive toggle.
Regex Find & Replace
Full JavaScript regex with capture groups, flags, and replacement patterns.
Extract Emails
Pull every email address out of any text — deduped by default.
Extract URLs
Pull every http/https link out of any text.
Extract Numbers
Pull every number (integers, decimals, negatives) out of any text.
Extract Phone Numbers
Pull phone numbers out of any text — international tolerant.
Extract Hashtags
Pull every #hashtag out of any text — deduped.
Extract Mentions
Pull every @mention out of any text — deduped.
Keyword Density
Count every word and rank by frequency — stopwords filtered.
Readability Score
Flesch reading-ease score with target audience for any passage.

What people do with the text tools

  • ·Clean weird whitespace, smart quotes, line endings from copy-paste
  • ·Find-and-replace with regex across multi-megabyte files
  • ·Diff two pieces of text side-by-side
  • ·Encode and decode Base64, URL, HTML, ROT13
  • ·Count words, characters, lines, reading time

Why Xonvert Text

Compared with Notepad++, Sublime Text, sed and awk, Xonvert's text tools trade install, license, and account for a URL. Free, private, fast, and offline-capable once loaded. The depth a desktop tool offers, with none of the friction.

Frequently asked questions

Are the Xonvert Text tools free?+
Yes — every tool is free. No signup, no credit card, no trial limits. Pro removes the small export watermark on free tools and lifts daily quotas on the heaviest operations.
Do my files leave my device?+
No. The Text tools run entirely in your browser. Your files are processed locally and never reach our servers.
Do they work offline?+
Yes — once a tool page is loaded, the browser caches its code and the tool keeps working without internet.
Do they work on mobile?+
Yes. Every text tool works in modern mobile browsers on Android and iOS without an app install.
Can I use these for commercial work?+
Yes, with no licensing fees. We don't claim rights to anything you produce.