Catalog
All categories
Every tool belongs to exactly one family. Pick the one that matches the job, or use search when you already know what you need.
Developer Tools
Format, validate and convert code and data.
Text Tools
Count, clean and reshape any text.
Image Tools
Compress, convert, resize and inspect images.
PDF Tools
Merge, split and rotate PDFs without uploading them.
Color & CSS
Pick colours and build CSS effects visually.
SEO & Website
Write better metadata and inspect live pages.
Calculators & Converters
Percentages, units, VAT, dates and averages.
QR & Utilities
QR codes, barcodes and everyday validators.
How the catalog is organised
Each category groups tools that solve the same kind of problem, not tools that happen to use the same file type. JSON, XML and encoding sit together under Developer tools because they share an audience and a workflow. Percentages, unit conversion and date maths sit under Calculators for the same reason.
Tools are never duplicated across categories. When two tools are close — a line diff and a text similarity score, for instance — both are published and cross-linked, with a clear explanation of the difference on each page.
Every published tool has a working implementation, server-rendered documentation, an FAQ and related links. If a feature could not be implemented reliably, it is not published rather than shown as a decorative button.