Practical guides, tips, and tutorials to help you make the most of technology in your daily life.
Step-by-step tutorial for pdf-lib, the pure-JavaScript library for creating and modifying PDFs directly in the browser. Covers installation, core API, font embedding, and common pitfalls.
A practical tutorial for rendering PDFs with pdfjs-dist 5.6.205 — worker setup, canvas rendering, text extraction, zoom controls, password handling, and common pitfalls.
A hands-on tutorial for running OCR in the browser with Tesseract.js 7.0.0 — worker setup, multilingual recognition, progress tracking, bounding boxes, and production pitfalls.
A practical tutorial for Sharp 0.34.5 covering resize strategies, format conversion, metadata extraction, compositing watermarks, color manipulation, and stream pipelines on Node.js.
A hands-on tutorial for browser-image-compression 2.0.2 covering file input handling, maxSizeMB targeting, Web Worker offloading, WebP output, progress tracking, EXIF orientation, and initial quality control for upload-heavy web apps.
A hands-on tutorial for @ffmpeg/ffmpeg 0.12.15 covering single-thread vs multi-thread core loading, MP4 to WebM conversion, trimming, audio extraction, frame extraction, compression, and progress logging inside modern browsers with SharedArrayBuffer requirements.
A comprehensive tutorial for the qrcode npm package (v1.5.4) covering data URL generation, canvas rendering, SVG output, file saving, error correction levels, custom styling, and encoding modes with real code examples for both Node.js and browser environments.
A hands-on guide to implementing QR code and barcode scanning in web applications using @zxing/library and @zxing/browser, covering camera integration, multi-format support, and real-time decoding.