Developer tools / Utilities
A growing collection of focused browser tools for recurring development, data and integration tasks. Each utility is designed to do one job clearly, quickly and without unnecessary setup.
Approximate first-use sizes for tool code, AI models and engines. Shared website assets are excluded; compression and browser caching can reduce downloads.
Format and validate JSON into a readable structure for development, integrations and automation work.
Compare two sets of plain text or structured data and highlight exact character-level differences.
Create cryptographically random passwords with configurable length, character groups and repetition controls.
Calculate precise durations, shift calendar dates or compare one appointment across four worldwide timezones.
Calculate profit and margin, convert markup percentages, and work out target selling prices with quick-reference formulas.
Pick or enter a colour and keep its HEX, RGB, HSL and CMYK values converted in sync.
Create multi-stop gradients, layered box shadows and text effects with editable presets, live previews and ready-to-use CSS.
Encode and decode Base64 text or files, transform URL components and calculate HMAC SHA-256 signatures.
Create ICO favicons and resized PNG icons, or convert PNG and JPG images between formats in your browser.
Remove an image background on your own device, adjust the cutout edges and download a transparent PNG.
Review sensitive-detail suggestions, replace text with asterisks and export screenshots with permanent black redactions.
Compare source and destination field lists, review suggested mappings and export the results for your integration work.
Record microphone and supported shared audio, then transcribe on your device with audio, text and subtitle downloads.
Find currencies, trademarks, arrows and other characters with named HTML entities, numeric codes, Unicode and CSS escapes.
Browse CSS loading animations, customise their colours, size and speed, and copy the HTML and CSS or download an example.
In development
Not ready for use yet. This macOS media and torrent command helper is still being developed and may not work as expected.
Support these tools
If one of these tools saves you time in your day-to-day work and you would like to support their continued development, a contribution through PayPal is always appreciated.
Working principle
A growing collection of focused browser tools for recurring development, data and integration tasks. Each utility is designed to do one job clearly, quickly and without unnecessary setup.
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