12 tools · 12 live
Tools
Measurement, construction, and practical everyday tools.
Tools covers consumer-facing utilities that aren't specifically for developers — QR code generation, color contrast checking for accessibility, a random team/group generator, UUID generation, Lorem Ipsum text. That's the distinction from Dev Tools: Dev is aimed at developers working with code, networking, and data formats; Tools is aimed at anyone — a teacher splitting a class into groups, a designer checking whether text passes an accessibility contrast ratio, a small business generating a QR code for a menu.
Like Dev Tools, most tools here run entirely in your browser rather than on a server — a QR code is generated locally, a UUID is created client-side — so nothing you type or upload is stored or transmitted anywhere. The binary converter is the most-linked tool in the category, doing double duty for students learning binary and developers who just need a quick lookup rather than opening a terminal.
A couple of tools here — Lorem Ipsum and the UUID/ULID generator — are aimed specifically at developers and designers setting up a project, even though neither requires any actual coding knowledge to use. That's part of why they live in Tools rather than Dev Tools: the audience for "I need placeholder text" or "I need a unique ID" is broader than people comfortable opening a terminal.
AI Subscription Cost Comparison
LiveCompare personal Claude, ChatGPT, and Google AI (Gemini) subscription costs — pick a tier from each, monthly or annual, and see the combined cost.
Color Contrast Checker
LiveCheck WCAG 2.1 AA and AAA contrast ratios between any two colours. Live preview, pass/fail matrix, and preset pairs for accessible design.
Binary Converter
LiveConvert plain text to binary (UTF-8 / ASCII 8-bit groups) and decode binary back to readable text, instantly in your browser.
PX to REM Converter
LiveConvert CSS pixels to REM and REM to pixels instantly. Customizable base font size, bidirectional real-time conversion, and a CSS reference cheat sheet.
QR Code Generator
LiveGenerate high-quality QR codes for any URL or text, downloadable as PNG or SVG.
Lorem Ipsum Generator
LiveGenerate customized Lorem Ipsum placeholder text — paragraphs, sentences, words, or lists — with optional HTML tag wrapping.
UUID & ULID Generator
LiveGenerate up to 500 UUID v4 or ULID identifiers in bulk, copy them individually or all at once, and decode the embedded timestamp from any ULID or UUID v1.
Hash Generator & Verifier
LiveGenerate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files instantly in your browser. Verify checksums with the built-in comparator. 100% client-side.
Audio Loop Checker & Cutter
LiveUpload an MP3 or WAV file, trim start and end points, visualize the waveform, and verify a perfectly seamless gapless loop using the Web Audio API. Download the trimmed region as a WAV file.
Online Audio Cutter & MP3 Trimmer
LiveUpload an audio file, drag visual handles to select a start and end range, preview it in real-time, and export the trimmed clip as lossless WAV or 192 kbps MP3.
Random Team Generator
LivePaste a list of names and instantly split them into balanced random teams or groups — for sports, classrooms, or events.
Image to PDF Converter
LiveConvert JPG, PNG, and WebP images into a single PDF document in your browser. Reorder pages, rotate images, choose page size and margins -- no uploads, 100% private.