- free tools
- images
- design
5 free tools for images, colors and QR codes
QR Generator, Image Optimizer, Batch Optimizer, WhiteLogo and Color Picker: what Hash42 Labs' free tools do and how to get the most out of them, no account.
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Blog
Guides and notes from Hash42 Labs on building secure, fast web apps and digital products.
- performance
- core web vitals
- web development
How to make your website faster: 5 fixes that matter
Optimized images, lazy loading, less JavaScript, caching and Core Web Vitals: the five changes that make the biggest difference to your website's speed.
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- hosting
- deployment
- web apps
5 free hosting platforms for developers: what you really get
Vercel, Netlify, Cloudflare Pages, GitHub Pages and Firebase Hosting: free plan limits, usage rules and what happens when you go over the limits.
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- security
- authentication
- web apps
5 mistakes that make your web app login vulnerable
Session tokens in localStorage, client-side only checks, passwords as the only barrier, no rate limiting, breached passwords: what to avoid and what to do instead.
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