353 Free Online Tools You Can Use Right Now (No Signup Required)

Most "free tool" sites make you sign up, give your email, or enter a credit card for a "free trial" that charges you in 3 days. We built something different.

353 tools. Completely free. No signup. No email. No credit card. Just use them.

What Kind of Tools?

For Developers

• JSON formatter and validator
• Base64 encoder/decoder
• Regex tester
• API response viewer
• CSS gradient generator
• Color picker and converter
• Chmod calculator
• UUID generator

For SEO

• Meta tag generator
• Sitemap generator
• Robots.txt builder
• Schema markup generator
• Keyword density checker
• Heading structure analyzer

For Business

• Invoice generator
• ROI calculator
• Break-even calculator
• Salary calculator
• Tip calculator
• Loan payment calculator

For Content Creators

• Word counter
• Lorem ipsum generator
• QR code generator
• Image resizer
• Color palette generator
• Social media image size guide

Why Free?

Because tools should be free. We make money from premium tools ($49/mo) and other products. The free tools drive traffic and build trust. If you find them useful, check out the premium ones. If not, keep using the free ones forever. No strings attached.

The Numbers

353 free tools. 331 premium tools. 684 total. All built by one person in Chicago. Running on $25/month infrastructure (Cloudflare + Claude AI).

Use code SPUNK to unlock 5 premium tools for free.