I recently built a web screenshot tool, thinking it’d be straightforward. Spoiler: I hit several gotchas. Here’s what I learned, in case you’re tac…
Posts for: #Canvas
From Reed-Solomon to Canvas: Building a High-Quality QR Code Generator
A recent project required “nicer looking” QR codes. Most tools I found just produced black-and-white squares or slapped a logo on top. I wanted som…
Building a Placeholder Image Generator with Canvas API: From Basics to Performance
As a frontend developer, I often need placeholder images: design assets aren’t ready, images are missing, or I’m building a quick prototype. I used…
Placeholder Image Generator: From Canvas API to Smart Layout Implementation
When developing new features or designing prototypes, we often need placeholder images to fill areas where real images aren’t ready yet. Instead of…
Canvas Image Watermark Implementation: From Positioning to Tiled Patterns
Adding watermarks to images is a common requirement—copyright protection, brand visibility, you name it. Recently built an online watermark tool, a…
Image to Sketch: Gaussian Blur and Color Dodge Blending with Canvas
I was building an image processing toolkit and needed to convert photos into pencil sketch style. After some research, I found the core principle i…
Canvas Transform Matrix for Image Rotation: From translate/rotate to Operation Queues
Recently I worked on a feature where users upload images and can rotate or flip them, combining multiple operations. For example: rotate 90° clockw…
Image Resize Tool Implementation: From Canvas API to High-Quality Scaling Algorithms
Written: 2026-05-09 17:22
Canvas Image Pixelation: The Two-Step Scale Down and Scale Up Approach
Recently, while building an image pixelation tool, I discovered something interesting: many implementations manually iterate through each pixel blo…
Image Optimizer Deep Dive: From Canvas API to Intelligent Compression Algorithms
Published: May 8, 2026 03:48