DEVELOPER TOOLS · 2026

5 Free Developer Tools You Didn't Know You Needed

Not every developer task needs a full IDE or a paid SaaS tool — sometimes you just need a quick, no-signup utility to check one thing and move on. Here are five that are worth bookmarking:

1. Base64 Encoder/Decoder — instantly encode text to Base64 or decode it back, useful for URLs, config files, and API payloads.
2. Markdown to HTML Converter — paste Markdown and get a live preview plus clean HTML output, ready to paste into a CMS or email.
3. Hash Generator — get the MD5, SHA-1, SHA-256 and SHA-512 hash of any text instantly, for checksums and quick comparisons.
4. Text Diff Checker — compare two versions of text or code line by line and see exactly what changed.
5. JSON Formatter & Validator — beautify, minify, or catch a syntax error in a JSON payload in seconds.

All five run entirely in your browser — nothing you paste in is ever uploaded to a server, so they're safe to use even with internal API responses or config data. Browse all tools →

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