Guides & Tutorials
Step-by-step guides for merging PDFs, compressing images, converting files, and getting more out of free online tools.
Explore how modern HTML5 canvas and JavaScript APIs allow image resizing and PDF extracting to run securely inside browser sandboxes without uploading files to remote servers.
Technical details of how we built 500+ calculator intent aliases (like /acre-to-bigha) mapping to direct Next.js pages with proper schemas and 200 OK statuses.
Describing the keyboard-driven autocomplete and scored ranking algorithm we deployed. Details of scoring prioritizations, highlight text, and Arrow key listeners.
Many online calculators calculate dates using standard Unix timestamps, causing DOB shift anomalies for users in Eastern timezones. Learn how LocalDate configurations fix this problem.
How canvas resizing runs synchronously on the main thread, and how we handle batch compression without freezing user scroll frames.
How local ML dataset tools like YOLO bounding box creators and COCO JSON viewers run directly inside browser sandboxes using client-side vector canvases.
Deep dive into WebAssembly, Tesseract.js, and neural network language models running OCR locally in modern browsers.
Best practices for optimizing image assets for Core Web Vitals, page speed, and visual crispness without quality degradation.
Learn how to combine multiple PDF files into one document quickly and for free — no account, no watermarks, no file size limits.
Step-by-step guide to reducing image file size to a specific KB target — ideal for government forms, job applications, and website uploads.
Turn any JPG, PNG, or photo into a PDF document online for free. Works on phone and desktop — no app download, no account required.
A roundup of the best free online PDF tools for merging, splitting, compressing, and converting PDFs — all browser-based with no watermarks.
Learn how to resize any image to exact pixels or a specific KB size online for free — no software needed, works on any device.