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18 tools, all free

Developer tools worth bookmarking

A notepad and task list you can share by link, plus developer tools for JSON, passwords, UUIDs and more that run entirely in your browser. All free.

Available tools

Notes

Open a notepad at any URL and start typing. It saves as you go, and anyone you send the link to sees the same page.

  • Plain text or Markdown
  • Saves as you type
  • Live sync by link
  • Any device

Tasks

A checklist that lives at a URL. Set priorities, reorder, tick things off, and share it by sending the link.

  • Low, Medium, High priority
  • Reorder up and down
  • History per task
  • Shared by link

Chat

An invite-only chat for people the founder knows. Text and emoji, find people by exact username, and open your chats from a password link.

  • Invite only
  • Text and emoji
  • Block anyone
  • Password link

JSON Formatter

Paste raw JSON and get it validated, indented, and easy to read in one click.

  • Prettify & minify
  • Syntax validation
  • Copy to clipboard
  • Error detection

UUID Generator

Generate one or a batch of secure, random UUID v4 identifiers instantly.

  • Secure entropy
  • Bulk generation
  • GUID formatting
  • Runs client-side

Password Generator

Create strong passwords with adjustable length, symbols, and a live strength check.

  • High entropy
  • Strength meter
  • Custom rules
  • Never leaves your browser

Markdown to PDF

Turn a markdown file into a clean, print-ready PDF, no software to install.

  • Live preview
  • Custom styling
  • Instant download
  • Code highlighting

Case Converter

Switch text between camelCase, snake_case, Title Case, and more in one step.

  • Smart title case
  • Programming cases
  • Live analytics
  • Zero tracking

URL Encoder / Decoder

Percent-encode or decode URLs, with component, full-URL, and form encoding modes.

  • Three encoding modes
  • Query param breakdown
  • Malformed input warnings
  • Runs client-side

Timestamp Converter

Convert Unix epoch values to dates and back, with automatic seconds or milliseconds detection.

  • Auto unit detection
  • Time zone support
  • Live epoch clock
  • Runs client-side

Diff Checker

Compare two blocks of text line by line and see exactly what was added, removed, or changed.

  • Line-by-line diff
  • Split & inline views
  • Ignore whitespace
  • Runs client-side

Regex Tester

Test a regular expression against sample text with live match highlighting and capture groups.

  • Live highlighting
  • Capture groups
  • All regex flags
  • Replace preview

Base64 Encoder / Decoder

Encode text to Base64 or decode it back, with UTF-8 and URL-safe alphabet support.

  • UTF-8 safe
  • URL-safe alphabet
  • Padding control
  • Runs client-side

JWT Decoder

Decode a JSON Web Token to read its header and claims, with expiry checked against the clock.

  • Header & claims
  • Expiry check
  • Never uploaded
  • Base64url segments

Hash Generator

Compute SHA-1, SHA-256, SHA-384, and SHA-512 digests of any text in your browser.

  • SHA-1 to SHA-512
  • Hex or Base64
  • Checksum compare
  • Web Crypto API

Cron Expression Parser

Translate a cron expression into plain English and preview its next scheduled runs.

  • Plain English
  • Next run times
  • Steps & ranges
  • @daily macros

LinkedIn Bold Text Generator

Make words bold or italic in a LinkedIn post, headline or comment, then copy and paste.

  • Style only what you select
  • 15 text styles
  • Live post preview
  • Remove formatting again

Hex to Tailwind Converter

Convert HEX, RGB, or HSL colors to the nearest Tailwind CSS v4 classes and generate matching OKLCH scales.

  • Tailwind CSS v4 OKLCH
  • CIEDE2000 accuracy
  • Format switcher
  • Batch CSS parsing

Why developers keep coming back

We built these tools because we needed them ourselves. Here's what makes them worth using.

Ready the moment it loads

Open any tool and start using it immediately. Nothing to install, no waiting.

Saves you time

Skip hunting for scattered tools across the web. Everything you need lives in one place.

Clean and focused

Every tool is built to do one job well, with a clean layout and no clutter slowing you down.

How it works

No complicated setup, no configuration. Three steps and you're done.

1

Pick a tool

Choose from the collection above. Each one is built for a specific job.

2

Paste or upload

Add your content, JSON data, markdown text, or a list of names to convert.

3

Get your result

Download the output or copy it to your clipboard. That's the whole process.

Common questions

Answers to what people usually ask before diving in.

Are these tools really free?

Yes, every tool on txtnode is free to use. There are no premium tiers, usage limits, or hidden fees.

Can I use these tools for commercial projects?

Absolutely. Use them for personal projects, client work, or anything commercial, there are no restrictions on the output.

Will more tools be added?

Yes, new tools ship based on what developers ask for. Have a suggestion? We'd like to hear it on the contact page.

Ready to get started?

Pick a tool above and start working.

Try JSON Formatter