Direct pages
FormatNest keeps individual URLs for exact searches while this hub connects the broader developer tools topic cluster.
Code utilities
Developer Tools Online
Quick browser utilities for formatting, validating, encoding, decoding, testing, generating, and looking up technical data.
12 focused toolsdeveloper tools online · JSON formatter · regex tester · Base64 encode decode · URL encoder decoder
Exact tool pages
Open the tool you need
Each link lands on a dedicated page with the exact FormatNest workspace ready to use.
JSON Formatter Validator
Format and validate JSON.
Regex Tester
Test regular expressions.
Base64 Encode/Decode
Encode and decode Base64 text.
URL Encoder/Decoder
Encode or decode URLs.
UUID Generator
Generate UUID values.
Hash Generator
Generate hashes from text.
DNS Lookup
Look up DNS records.
WHOIS Lookup
Check domain WHOIS data.
HTML Formatter
Format HTML code.
CSS Formatter
Format CSS code.
JavaScript Formatter
Format JavaScript code.
CSS Minifier
Minify CSS.
Search intent
Built for fast answers and repeat use
Daily workflows
Save frequent tools, reopen recent tools, and use quick search to move around without hunting through menus.
Clean experience
The site stays lightweight, focused, and free of paused ad scripts while traffic and engagement are monitored.
FAQ
Developer Tools Online FAQ
Do developer tools run in the browser?
Most developer tools run locally in the browser for speed.
Are these tools useful for SEO traffic?
Yes. JSON formatter, regex tester, Base64, DNS, and WHOIS searches have strong utility intent.
Can I bookmark individual tools?
Yes. Every developer tool has a direct URL.