Build Smarter.
Start Free.
Free tools for developers and founders — format JSON, generate passwords, test regex, compress images, audit SEO, and more. All free, no sign-up required.
Business & AI Tools
Validate ideas, estimate costs, and plan your tech strategy.
App Cost Calculator
Get an instant, itemised estimate for your mobile or web app. Compare against freelancers and US agencies.
Startup Validator
Paste your idea and get an AI viability score across market size, competition, timing, and execution risk.
SEO Analyzer
Enter any URL for an instant SEO audit — title tags, meta descriptions, speed signals, and mobile readiness.
Business Name Generator
Type your industry and style preference. Get 8 brandable name ideas with domain availability hints.
Tech Stack Advisor
Tell us your app type, team size, and priorities. Get a curated stack recommendation with clear rationale.
AI Project Estimator
Describe your project and get an instant AI-powered estimate of development hours, cost, timeline, team composition, and risks.
ROI Calculator
Estimate how much your business could save with AI automation. Input team details and get instant ROI results.
Developer Micro Tools
Everyday utilities that run entirely in your browser. No data leaves your machine.
JSON Formatter
Paste JSON to format, minify, or validate with syntax highlighting. Instant error detection.
Password Generator
Generate secure random passwords with customizable length, character sets, and strength meter.
Color Converter
Convert between HEX, RGB, and HSL formats instantly. Preview swatch and quick-pick popular colors.
Lorem Ipsum Generator
Generate placeholder text — paragraphs, sentences, or words. Customizable count with one-click copy.
Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 back to plain text. Supports file upload.
Markdown Preview
Write Markdown on the left, see rendered HTML on the right. Copy clean HTML output.
Meta Tag Generator
Generate SEO-optimized meta tags with live Google preview. Includes OG and Twitter card tags.
Regex Tester
Test regular expressions with real-time highlighting, match details, and flag controls.
Image Compressor
Compress images in your browser using the Canvas API. Drag-and-drop, quality slider, before/after comparison.
Privacy Policy Generator
Generate a comprehensive privacy policy for your website. Customizable data types and third-party services.
Cron Expression Generator
Build cron expressions visually with dropdowns, presets, and human-readable descriptions. Preview next 5 run times.
JWT Token Decoder
Decode and inspect JWT tokens instantly. View header, payload, and signature with color-coded JSON.
API Request Tester
Test REST API endpoints with custom methods, headers, and body. View formatted responses with timing.
SQL Query Formatter
Format and beautify SQL queries with syntax highlighting. Uppercase keywords, customizable indentation.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. Live clock, multiple timezones, quick presets.
Ready to build?
Used a tool and liked what you saw? Get a free proposal for your real project in 24 hours.
Get Free Proposal