maerz.studio
Free Developer Tools
8 open-source tools that run entirely in your browser. No accounts, no data collection, no cost.
Client-side·Open source·Zero tracking
{}
Live
Dev Utils
Crypto hashing · Base64 · UUID v7 · RegExp · JSONC
#crypto#base64#uuid#regex
PDF
Live
PDF Tools
Merge, split and compress PDF files client-side.
#pdf-lib#pdfjs
IMG
Live
Image Toolkit
Resize, convert, compress images via Canvas API & WebCodecs.
#canvas#webcodecs
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Live
File Converter
CSV ↔ JSON ↔ YAML ↔ XML with Monaco editor preview.
#papaparse#monaco
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Live
Color Palette
Extract palettes from images. CSS Color Module 5 HSL/OKLCH.
#color-thief#oklch
MD
Live
Markdown Exporter
Write Markdown, export to PDF or HTML with syntax highlighting.
#marked#html2pdf
QR
Live
QR Generator
QR codes with logo overlay. Installable as PWA.
#qrcode#pwa
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Live
URL Shortener
Shorten links via Cloudflare Workers KV. Analytics dashboard.
#cloudflare#workers
Changelog
Redesign & Features
Complete redesign of all 8 apps. Switched to Royale Purple dark theme, added Geist font family, improved layout, header, footer, sidebar shortcuts, legal requirements, and this changelog.