Tips, tutorials and updates
Test which of your desktop programs a browser can genuinely replace, with a seven-step method and honest limits.
See what your BMI number does and does not tell you, how to read the category label, and which other report measurements matter more.
Format, validate and explore JSON in your browser, with beautify, minify and tree view that keep your data on your own device.
Convert HEX, RGB and HSL values in your browser with no signup, and keep your palette consistent across every tool you use.
Get instant word, character, sentence and reading-time counts as you type, with no upload and nothing to install.
Turn a long, unwieldy URL into a clean short link you can paste, print or text, and learn when shortening helps and when it costs you clicks.
Compress images the right way: learn how lossy and lossless differ, pick the best format, and cut file size without visible quality loss.
Write in a markdown editor with live preview and a seven-step workflow that keeps your drafts portable, consistent and fast to revise.
Merge PDF files in the right order, fix orientation, and add continuous page numbers, with checks that catch layout problems before you export.
Key points for using a QR code generator: first choose the content type based on the intended action after scanning, then set the error correction level according to the display or print scenario—higher correction resists obstruction better but makes the code denser. When generating, ensure high contrast between foreground and background, leave margins on all sides, and be cautious about placing complex patterns in the center. Before exporting, test with different phones and scanning apps to confirm the redirect target and recognition rate are both correct.
Encode and decode Base64 in your browser, understand data URIs, and learn when inlining assets helps or hurts performance.
Convert Unix timestamps to readable dates and back with the correct time zone, and catch unit and daylight-saving errors before they reach your data.
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Hands-on tutorials broken down by tool: what problem each one solves, how to use it, and the pitfalls to avoid — with step-by-step instructions you can follow right away.
The details that double your efficiency: shortcuts, parameter combinations, batch-processing approaches and the habits that genuinely save time at work.
Technical deep dives into encoding, data formats and engineering practice — focused on principles and reasoning rather than recipes.
Free text processing, PDF tools, AI writing and more