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Guides and tutorials on image conversion, file formats, developer tools and more.
Which format should you convert to? 98 measurements, one decision guide
We converted the same test files through 38 of our own converters and measured every output byte. Here is what the numbers say about which format to pick for photos, screenshots, logos and scans.
Read more →Open Graph and Meta Tags: What Actually Controls Your Link Preview
The difference between SEO meta tags and Open Graph, the tags that matter, ideal sizes and lengths, and why your preview sometimes won't update.
Read more →Why Formatting SQL Matters (and What a Formatter Does)
How SQL formatting makes queries readable, why dialects change the output, and the difference between formatting, validating and running a query.
Read more →Binary, Decimal and Hex Explained: How to Convert Between Number Bases
Why computers use binary, why programmers use hex, and how to convert between binary, decimal, octal and hexadecimal, plus the one gotcha that trips you up.
Read more →Cron Expressions Explained: The 5 Fields and Common Examples
A cron expression is five fields that say when a job runs. Learn what each field means, the syntax for ranges and steps, and a table of ready-to-use examples.
Read more →CSS Gradients, Shadows and Rounded Corners: A Visual Guide
How CSS gradients, box-shadow and border-radius really work: what each value does, common recipes, and how to build them visually instead of guessing numbers.
Read more →How to Compare Two Texts and See Exactly What Changed
A diff shows what changed between two versions of a text. Learn how line and word diffs work, when to use each, and how to compare privately in your browser.
Read more →How to Crop an Image (Without Losing Quality)
What cropping actually does, why it's different from resizing and compressing, and how to crop at full resolution right in your browser.
Read more →JSON vs YAML: What's the Difference and How to Convert
JSON and YAML describe the same data in different styles. Here is when to use each, the gotchas that trip people up, and how to convert between them safely.
Read more →How to Convert Markdown to HTML (and Back Again)
Markdown is quick to write; HTML is what browsers read. Here is how converting between them works, what survives the round trip, and how to do it privately.
Read more →Morse Code Explained: Dots, Dashes and the Rhythm Between Them
How Morse code works — the dot and dash, why SOS is ···———···, and why the spacing between signals matters as much as the signals themselves.
Read more →How to Pick Colors From an Image (and Get a Palette)
Eyedrop an exact HEX or RGB code from any image, understand HEX vs RGB, and learn how a dominant-color palette is extracted — all in the browser.
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