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
14 tools, zero sign-ups
Developer tools worth bookmarking
Format JSON, generate passwords and UUIDs, convert markdown to PDF, and more, all running in your browser, all free.
Available tools
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
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.
No sign-up required
Open any tool and start using it immediately. No registration, no email verification, 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, without ads breaking your flow or 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.
Do I need to create an account?
No account needed. You can use any tool right away, we don't ask for an email or any personal information.
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. No sign-up needed.
Try JSON Formatter