Multi‑Format Checksum Generator - Online MD5, SHA, CRC
Paste text or drop a file and get checksums in multiple formats simultaneously. Compare with original. All local.
UD5 Toolkit
Online Quick Checksum Tool – hash text or files instantly
Paste text or drop a file and get checksums in multiple formats simultaneously. Compare with original. All local.
Generate SHA‑3 and SHAKE hashes of any text with configurable output length. All local using js library.
Generate ultra-secure, random passwords with configurable length and character sets. Created entirely on your device; never transmitted or stored.
Enter a topic and get a list of suggested hashtags. Mix popular and niche tags. Copy all with one click. Local only.
Create unique magic spell names with descriptions. Perfect for Dungeons & Dragons and creative writing.
Generate a small logic puzzle grid (like Einstein’s riddle) with clues. Solve in browser or print. Local generation.
Create a custom crossword grid with rotational symmetry. Set grid size and click to place black squares. Export as template.
Generate random but realistic‑looking data arrays (users, products, orders) with typos and missing fields. For test robustness.
Drop an image that might have wrong extension and see its real format (JPEG, PNG, WebP) based on header bytes.
Enter a list of words and create a custom word search grid. Choose difficulty, print or export as PDF. Great for teachers.
Fill in name, match URL, and description to get a ready‑to‑edit UserScript header. Start your browser extension easily.
Upload an image and turn it into a simple digital jigsaw puzzle. Choose number of pieces. Play on screen.
Click to generate a multi‑sensory room description for your tabletop RPG. Adds immersion to any dungeon crawl.
Drop a PNG file and see all its chunks (IHDR, tEXt, etc.). Extract hidden text and color profiles. Pure JavaScript reader.
Get a safe, ready‑to‑use Bash script template with argument parsing, error handling, and help function. Start scripting faster.
Generate the <meta name='color‑scheme'> tag and CSS property to enable native dark/light rendering. Quick copy.
Upload one image at multiple widths and generate the complete img srcset and sizes attributes. Perfect for performance.
Upload two images and see a diff overlay highlighting the pixel differences. Adjust tolerance. For regression testing.
Upload multiple sizes of the same image and generate the complete srcset and sizes attributes. For perfect responsive performance.
Generate a silly or absurd company policy item. Perfect for a quick laugh during a dull meeting. Local fun.
Paste a list of image URLs and generate a valid Google Image Sitemap XML. Essential for photography sites.
Get a random adorable dog picture. Breed info shown if known. Pure mood booster. Client‑side API call.
See a cropped or simplified brand logo and guess the company. Hints available, score track. Local fun, no copyright infringement.
Enter hex codes and download a PNG swatch image with color names. Useful for design spec documents. Built via canvas.
Paste image URLs and generate a responsive masonry or justified gallery layout with lightbox. Copy the HTML/CSS/JS.
Create beautiful, vowel‑heavy names perfect for elves, magical beings, or startups. One‑click generation. Pure frontend.
See a color swatch and guess its hex code. Get scored on accuracy. Improve your color intuition. Fun for designers.
Add columns with types and constraints, then generate a SQL CREATE TABLE statement. Supports MySQL/PostgreSQL.
Generate a random art style name (e.g., 'Baroque cyberpunk oil painting') for inspiration or AI image generation.
Convert multiple PNGs to WebP format at once. Adjust quality and see size reduction. All processing local and private.