Featured Tools
A selection of useful tools to get started quickly.
Net Salary Calculator
Estimate monthly net pay after Social Security contributions and regional IRPF.
Open tool SEOTechnical SEO Auditor
Audit On-Page tags, HTTP headers, indexability, meta tags, and speed.
Open tool ImagesWebP Image Compressor
Compress and convert JPG, PNG, and WebP in browser with full privacy.
Open tool FinanceMortgage Calculator
Calculate your monthly mortgage payment and amortization schedule.
Open tool SocialQR Code Generator
Create custom high-resolution QR codes for URLs, WiFi, text, or contacts.
Open tool DeveloperJSON Formatter & Validator
Validate, beautify, and repair JSON structures instantly with error detection.
Open tool Self-EmployedFreelance Invoice Calculator
Calculate taxable base, VAT, and personal income tax withholding on invoices.
Open tool DeveloperUnix Timestamp Converter
Convert Unix epoch timestamps to human readable dates GMT/local and vice versa.
Open toolBrowse by Category
Access over 140 tools organized by topic.
SEO & Search Optimization
Technical audits, meta tags, JSON-LD schema, robots.txt, and sitemaps.
View toolsPerformance & WPO
Speed optimization, CSS/JS compression, Critical CSS, and font subsetting.
View toolsDeveloper Tools & Code
JSON, SQL, hashing, UUIDs, CRON expressions, JWT, regex, and converters.
View toolsSelf-Employed Calculators
Contribution fees, VAT/tax withholding invoices, IAE codes, and tax simulator.
View toolsLabor & Salary Calculators
Net salary, severance pay, final settlement, unemployment, and retirement.
View toolsFinance & Loans
Mortgages, loans, amortization schedules, compound interest, and inflation.
View toolseCommerce & Logistics
Volumetric weight, commercial margins, discounts, and CSV validators.
View toolsImages, SVG & PDF
WebP/JPG/PNG compression, PDF tools, palettes, EXIF data, and favicons.
View toolsMarketing & Social Media
QR generator, WhatsApp direct links, UTM tags, and engagement rate.
View toolsEmail & DNS Tools
DNS diagnostics (SPF, DKIM, DMARC, MX) and HTML email signature builder.
View toolsGeneral Utilities
Percentage calculators, date counters, exact age, and random draws.
View tools