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The developer toolkit
you need.
29+ tools. Curated resources. A weekly newsletter with tips you'll actually use.
Most "free" developer tools online quietly upload whatever you paste into them — a JSON payload, an API key hidden in a config, a password you're testing. WeHelpDevs was built the other way around: every tool here runs entirely as JavaScript in your own browser tab, so nothing you type, paste, or upload is ever sent to a server. That's not a marketing claim you have to take on faith — it's a direct consequence of how the tools are built, and you can check it yourself in your browser's network tab. Alongside the tools, we write practical guides on the concepts behind them — how hashing actually works, why timestamps have no timezone, what a JWT really proves — because a formatter is more useful once you understand what it's formatting.
Tools for every task.
Format, convert, encode, generate.
Latest articles.
Tutorials, guides, and reference sheets for developers.
XML vs JSON: When to Use Each Data Format
A practical comparison of XML and JSON beyond verbosity — schema validation, namespaces, attributes vs elements, and where each format still genuinely wins.
Writing Clean CSS: Organization, Minification, and Performance
Practical conventions for CSS that stays maintainable as a project grows, what minification actually removes, and how CSS size affects real page performance.
Image Optimization for the Web: Formats, Compression, and Tradeoffs
How to actually choose between JPEG, PNG, and WebP, what lossy compression is doing under the hood, and practical rules for shipping smaller images without visible quality loss.
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Curated resources.
Tools and services we actually use.
WeHelpDevs offers 29+ free browser-based tools including JSON formatter, XML formatter, CSV viewer, SQL formatter, Base64 encoder/decoder, URL encoder, HTML entity encoder, JWT decoder, regex tester, password generator, UUID generator, hash generator, QR code generator, image compressor, HTML to Markdown converter, CSS minifier, cron expression builder, IP address lookup, color converter, timestamp converter, and number base converter. All tools run entirely in your browser — your data never leaves your device. No tool here requires an account, a file upload to a remote server, or a usage limit reset by signing up — open the one you need and it works immediately. The blog covers the reasoning behind the tools in more depth: how JWTs are signed and verified, the real difference between MD5, SHA-1, and SHA-256, why Unix timestamps carry no timezone information, and practical style guides for SQL and CSS.