Practical guides and tips to help you get more done with free, in-browser developer tools.
Turn a small image into a string you can paste into HTML, CSS or JSON — when data URLs are worth it, the ~33% size cost, and decoding back.
Read articleFix indentation drift, catch tabs-vs-spaces and the yes/no boolean trap, and convert YAML to JSON — before your build breaks.
Read articleLearn the building blocks of regex, avoid the greedy-vs-lazy trap, and copy ready-made patterns — all tested live in your browser.
Read articleStop squinting at a wall of red and green — see how a diff checker aligns two texts and highlights every addition, deletion, and change.
Read articleStop counting commas when you edit a long INSERT — see how an in-browser Insert Editor labels every value with its field.
Read articleTurn log-file SQL into readable, runnable queries — format messy statements and fill in ? / @param / :param placeholders, all in your browser.
Read articleLearn what makes a password strong, how to build a memorable passphrase, and why you should never reuse passwords.
Read articleExtract exactly the values you need from JSON — syntax, worked examples and filters, with a free in-browser query tool.
Read articleCreate a scannable QR code in seconds, plus best practices for size, contrast and scannability — and how static vs dynamic codes differ.
Read articleTurn JSON into a spreadsheet-ready table using a free converter, spreadsheet import, or a short script — plus how to handle nested data.
Read articleLearn how JPG, PNG and WebP differ, what quality settings to use, and how to shrink your images for faster page loads — without any visible quality loss.
Read articleWhat JSON is, why formatting matters, how to spot and fix common syntax errors, and how to minify JSON for production.
Read articleA plain-English explanation of Base64 — what it is, when to use it, and how to encode and decode text or files in your browser.
Read articleWhy spaces, ampersands and hashes break URLs, and how percent-encoding turns any text into a URL-safe string.
Read articleWhat a universally unique identifier is, how v4 works, why collisions are practically impossible, and how to generate one.
Read articleHow hashing differs from encryption, what MD5 is (and isn't) good for, and when to reach for SHA-256 instead.
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