UD5 Toolkit
Pixel Art Upscaler - Online Nearest‑Neighbour Enlarge
Enlarge pixel art or low‑res images without blur. Choose 2x, 4x, 8x. Perfect for sprites. Download scaled PNG.
Pixel Sharp Image Upscaler - Online Nearest‑Neighbour Enlarge
Pixel Sharp Upscaler
Perfect nearest-neighbour enlargement for pixel art, icons, and retro graphics. No blur, no AI artifacts.
Drop your image here
or click to browse
PNG, JPG, GIF, WEBP – Max 10MB
Frequently Asked Questions
Nearest-neighbour interpolation is the simplest image scaling method. When enlarging, each pixel of the original image becomes a block of pixels of the same color. This preserves hard edges and pixel art appearance perfectly, with zero blur or smoothing.
AI upscalers often add “hallucinated” details or smooth edges, which destroys the aesthetic of pixel art, icons, or retro graphics. This tool keeps every pixel sharp and mathematically exact – ideal for pixel-perfect enlargements.
No, nearest-neighbor upscaling only works correctly with integer factors (2x, 3x, 4x…). Fractional scaling would cause uneven pixel sizes and distortion. The tool restricts input to whole numbers.
Any common web image format: PNG, JPEG, GIF, WEBP. The output is always a crisp PNG to ensure pixel-perfect quality.
The input file is limited to 10MB. Also, resulting canvas dimensions must fit within browser limits (typically around 16384×16384px). If the upscaled image would be too large, an error will be shown.
No. Everything happens locally in your browser. Your files are never sent anywhere – privacy guaranteed.
Online Video Resizer - Crop & Scale Locally
Resize a video by cropping to a new aspect ratio or scaling up/down. Apply and download the result. Browser‑based.
Image Resizer - Online Bulk Photo Resize Without Upload
Resize images directly in your browser by width, height, or percentage. Maintain aspect ratio and download the result. Images never leave your computer.
JPEG Quality Visual Comparator - Online Side‑by‑Side
Upload an image and see a slider comparison of different JPEG quality levels. Find the optimal file size vs. quality trade‑off.
Image Compressor - Online Optimize JPEG & PNG Locally
Compress images while preserving quality. Adjust compression level and preview output size. All processing is done client-side for fast and secure optimization.
Auto Image Enhancer - Online One‑Click Photo Fix
Automatically adjust brightness, contrast, and saturation of a photo. Click to enhance and download. Canvas‑based.
Image Pixelator - Online Censor & Mosaic Effect Tool
Pixelate or censor parts of an image by dragging. Adjust block size for mosaic effect. Useful for hiding faces or sensitive data. Client-side processing.
Image to Pixel HTML Table - Online Giant Pixel Art
Downscale an image to a grid of colored `<td>` cells. Create a huge HTML pixel art. Copy the code.
Image Aspect Ratio Fitter - Online Resize to Exact Fit
Resize and crop an image to a specific aspect ratio (1:1, 16:9…) with automatic fit/cover. Download the perfect image.
Pixel Data to BMP Generator - Online Raw Image Builder
Enter RGB values row by row and create a tiny BMP file. Understanding bitmap headers. Geeky developer tool.
Pixel Sorter Effect - Online Glitch Art Generator
Apply a pixel sorting glitch effect to your photo. Sort pixels by brightness, hue, or saturation. Create abstract art. Canvas.
image‑rendering CSS Demo - Online Crisp or Smooth
Toggle image‑rendering: auto, pixelated, crisp‑edges on a scaled image. Essential for pixel art display.
Online Image Cropper by URL - Remote Image Edit
Enter an image URL, crop it interactively, and download the result. No upload. Works with any CORS‑enabled image.
Mosaic Pixel Art from Image - Online 8‑Bit Style Converter
Turn any photo into a mosaic of colored blocks or pixel art. Choose block size and palette. Download as PNG. Pure canvas.
Next‑Gen Image Format Comparator - Online AVIF vs WebP vs JPEG XL
Upload one image and see it encoded in AVIF, WebP, and JPEG XL side‑by‑side. Compare quality and file size in your browser.
Image Difference Checker - Online Visual Compare
Upload two images and see a diff overlay highlighting the pixel differences. Adjust tolerance. For regression testing.
WebP Quality Comparator - Online vs JPEG & PNG
Compare your image as JPEG, PNG, and WebP side by side at different quality levels. See the size savings visually.
Image Edge Detector - Online Sobel & Canny Filter
Run edge detection algorithms (Sobel, basic Canny) on images directly in the browser. Great for learning computer vision concepts.
Web Image Size Calculator - Online KB & Dimensions Tool
Predict the file size of an image based on pixel dimensions and format (JPEG, PNG, WebP). Rough estimate. Local.
Image Resize & Pad - Online Fit Without Cropping
Resize an image to exact dimensions and add colored padding to fill the aspect ratio without cropping. Useful for profile grids.
Image Format Converter - Online PNG to JPEG & More
Convert images between popular formats like PNG, JPEG, WEBP, and BMP. No quality loss on conversion when using lossless formats. Private and fast.
Image Compression Comparator - Online JPEG vs WebP Preview
Compare original and compressed image side‑by‑side with a slider. Choose format and quality level. Local processing.
Image to WebP Converter - Online Bulk Optimize
Convert images to WebP format with configurable quality. See file size savings. Batch process multiple files. All local.
Screen Resolution Detector - Online Viewport Size Checker
Detect your current screen resolution, viewport dimensions, and device pixel ratio. Useful for responsive design testing. No data collection.
Image vs. SVG Weight Comparator - Online Byte‑for‑Byte
Paste a raster image and an SVG, see the file size and rendering time. Understand when to use vector. Local.
Image File Size Predictor - Online Estimate Before Export
Input dimensions and color depth to estimate uncompressed file size for BMP, PNG, JPEG. Planning tool.
GIF Optimizer - Online Reduce Size with Color Quantizer
Reduce GIF file size by lowering color count and removing duplicate frames. See side‑by‑side preview. All local.
SEO Title & Meta Optimizer - Online Pixel Width Preview
See how your page title and description will look in Google SERP. Check pixel width and character count. Local tool.
Image Cropper - Online Crop Photo Circle & Rectangle
Crop images into rectangular or circular shapes with interactive handles. Output as PNG or JPEG. A simple, browser-based tool with no uploads required.
Photo Print Size Guide - Online Aspect Ratio to Dimensions
Enter image pixel dimensions and compute maximum print size at various DPI. With aspect ratio presets (4x6, 5x7, 8x10) and cropping preview. Local tool.