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Format, minify, and validate JSON data instantly. Real-time syntax checking and character count.
Test regular expressions in real-time with match highlighting, groups, and flags support.
Convert between Unix timestamp and human-readable date. Supports seconds, milliseconds, and current time.
Encode and decode Base64 strings instantly. All processing done locally in your browser.
Decode and inspect JSON Web Tokens. View header, payload, and claims with expiration status.
Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly. All computed locally in your browser.
Convert text to camelCase, PascalCase, snake_case, kebab-case and more instantly.
Convert between HEX, RGB, HSL, CMYK formats with live preview and WCAG contrast checker.
Create linear, radial and conic gradients with live preview. Export clean CSS code instantly.
Preview Google Fonts combinations with live text. Copy CSS @import code instantly.
Convert width and height for 16:9, 4:3, 1:1, 21:9 and more. Shows common resolutions instantly.
Convert length, weight, temperature and area units instantly with real-time results.
Draw one from a list, or split a group into teams. Perfect for lucky draws, raffles and random selection.
Count characters, words, sentences and paragraphs in real-time. Supports mixed Chinese and English text.
Generate QR codes from text or URL instantly. Download as PNG image. Runs locally in your browser.
Calculate your BMR, TDEE and daily calorie targets for weight loss, maintenance or muscle gain.
25-minute focus sessions with 5-minute breaks. Track your productivity and stay in the zone.
Calculate your Body Mass Index from height and weight. Supports metric and imperial units. Links to calorie calculator.
Find the best time to sleep or wake up based on 90-minute sleep cycles. 5-6 complete cycles for optimal rest.
A comprehensive guide to JSON formatting, regex testing, timestamp conversion, Base64 encoding, JWT decoding, and hash generation.
Understand BMR, TDEE, BMI, weight management strategies, and sleep optimization — all explained with practical formulas.
Master HEX, RGB, HSL, CMYK color formats, WCAG contrast ratios, and practical color management with CSS custom properties.
Get the most out of unit converters, random pickers, character counters, QR code generators, and pomodoro timers.
Step-by-step guide to building a profitable online tool website using AI assistance — from planning to AdSense monetization.
Complete guide to getting your content featured on Google Discover — technical requirements, content policies, and monetization.
Practical guide to driving website traffic from Reddit — finding subreddits, crafting viral posts, and converting visitors.
Get Google AdSense approved on your first try — content requirements, legal pages, mobile design, and traffic strategies.
20 AI-written vs 20 human-written articles tracked for 90 days — rankings, traffic, and engagement compared.