Format it. Decode it.
Look it up.
128 free tools for the small jobs of running a website: JSON, DNS, regex, hashes, QR codes and more. No account needed.
All 128 tools
Violet means you have opened it before
Security13
Converter22
- Date-time converter
- Integer base converter
- Roman numeral converter
- Base64 Encoder
- Base64 Decoder
- Base64 file converter
- Color converter
- Case converter
- Text to NATO alphabet
- Text to ASCII binary
- Text to Unicode
- YAML to JSON converter
- YAML to TOML
- JSON to YAML converter
- JSON to TOML
- List converter
- TOML to JSON
- TOML to YAML
- XML to JSON
- JSON to XML
- Markdown to HTML
- Font Converter
Web34
- URL Encode
- URL Decode
- HTML Escape
- HTML Unescape
- URL parser
- UTM Generator
- URL redirect checker
- Tech stack analyzer
- SEO Checker
- Device information
- Basic auth generator
- Open Graph Generator
- OTP code generator
- OTP Reader
- MIME types
- JWT parser
- Keycode info
- Slugify string
- HTML WYSIWYG editor
- User-agent parser
- HTTP status codes
- Diff
- Outlook Safelink decoder
- Let Me Google That For You
- Let Me ChatGPT That For You
- Robots.txt tester
- Sitemap.xml validator
- Favicon tester
- Domain TLD Pricing
- WordPress Update Parser
- Open Graph Preview
- JSON-LD Validator
- JSON-LD Generator
- Email Thread Simulator
Images & Videos7
Development20
- Git cheatsheet
- shadcn/ui cheatsheet
- SQL cheatsheet
- Random port generator
- Crontab generator
- JSON prettify and format
- JSON viewer and editor
- JSON minify
- JSON to CSV
- SQL prettify and format
- Chmod calculator
- XML formatter
- YAML prettify and format
- Email normalizer
- Name to Email Generator
- Regex Tester
- Regex cheatsheet
- Tunnel command generator
- Benchmark builder
- Port Killer
Mock API5
Network13
Math5
Text8
Audio1
Articles
All articlesA weekly explainer on one webmaster problem, each paired with the tool that checks it.
301, 302, 307, 308: picking a redirect, and why chains cost you
Every redirect answers two questions. Is this move permanent, and may the browser turn a POST into a GET? Most redirect bugs come from answering only the first.
Tool: URL redirect checker
SPF and DKIM can both pass while DMARC fails
SPF and DKIM each vouch for a domain. DMARC asks whether it is the domain your reader actually sees, and that question is where legitimate mail gets blocked.
Tool: Domain Lookup
robots.txt, sitemap, and JSON-LD: three files, three jobs
They answer three different questions, and the classic mistake — blocking a page in robots.txt to deindex it — does the exact opposite.
Tool: Robots.txt tester
Directory
BrowseServices and references other webmasters rely on.
Products
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Resources
- Web.devWebsite
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