UD5 Toolkit
Web Page Screenshot Tool - Online Capture Browser Tab
Take a screenshot of the current browser tab using Screen Capture API. Crop, annotate with text and arrows, and download as PNG. Local only.
YouTube Thumbnail Downloader - Online Get Video Thumbnails
YouTube Thumbnail Downloader
Instantly download high-quality YouTube video thumbnails in all available resolutions. Just paste the video URL.
Example: https://www.youtube.com/watch?v=dQw4w9WgXcQ or just
dQw4w9WgXcQ
Invalid YouTube URL or video ID. Please try again.
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Fetching thumbnails...
Available Thumbnails
Frequently Asked Questions
Simply paste the YouTube video URL or its video ID into the input field above, then click "Get Thumbnails". You'll see all available thumbnail resolutions. Choose any and hit the download button or view it in full size.
We provide direct links to all YouTube auto-generated thumbnails: Default (120Ă—90), Medium (320Ă—180), High (480Ă—360), Standard (640Ă—480), and Max Resolution (1280Ă—720). Sometimes the highest quality image may not exist for older videos.
YouTube only generates a 1280Ă—720 thumbnail for videos that are uploaded in HD or higher. If the original video was uploaded in a lower resolution, the max resolution thumbnail may not exist. In that case, we automatically hide that option.
Absolutely! This tool is 100% free, with no sign-up or hidden costs. It works entirely in your browser by fetching images directly from YouTube's public CDN.
Please note that YouTube thumbnails are copyrighted by the video owners. You may use them for personal or fair-use purposes, but you should not redistribute or use them commercially without permission. Always respect copyright laws.
Our tool automatically extracts the video ID for you. Common URL formats include
youtube.com/watch?v=ID, youtu.be/ID, or youtube.com/embed/ID. You can also just paste the 11‑character video ID directly.
Link Preview Analyzer - Online See Open Graph & Meta of Any URL
Paste a URL and see the og:title, description, image, and twitter card that will be used when shared. No server needed.
Keyboard Shortcuts Viewer - Online Your Browser & OS Keys
Display a dynamic list of keyboard shortcuts for the current browser and operating system. Filter by category. Keep it open for reference.
Image Flip Tool - Online Mirror & Rotate Picture
Flip images vertically or horizontally, and rotate in 90° increments. Quick and simple editing right in the browser. Download the corrected image instantly.
Image Round Transparent Corners - Online Smooth Edge
Apply rounded corners to an image and keep the background transparent. Save as PNG. Perfect for avatars and icons.
CSS Scroll Snap Demo - Online Carousel & Gallery
Build a horizontal scroll‑snap container with configurable snap‑type and alignment. Perfect for image galleries.
Image Background Remover - Online AI-Free Local Tool
Remove solid or similar backgrounds from images using color thresholding. No AI, just quick client-side canvas processing. Download as PNG.
Hex Viewer - Online Inspect Binary File Hex Dump
Drop any file to see its raw hexadecimal representation and ASCII side‑by‑side. Navigate with offset. Client‑side only.
Bit Density Visualizer - Online File Binary Viewer
Upload a small file to see each byte as a block, color-coded by value. Visualize the structure of binary data. Client-side.
Open Graph Audit Tool - Online Check Social Meta
Enter a URL and see a preview of how it will appear when shared on Facebook, Twitter, LinkedIn. Detect missing tags.
Lyrics Finder - Online Song Lyrics Search Tool
Enter a song title and artist to find lyrics using public APIs. Quick preview and copy. A lightweight tool for music lovers.
Online Audio Click & Pop Remover - Clean Vinyl Recordings
Remove clicks, pops, and crackle from audio recordings. Useful for digitizing vinyl. Threshold‑based local processing.
CSV Viewer & Editor - Online Spreadsheet Tool
View and edit CSV data in a familiar table interface. Add/delete rows and columns, sort, and export. Fully local, no cloud sync.
Tab Counter & Memory Estimator - Online Window Stats
See how many tabs you have open and estimate memory usage based on navigator object. Fun productivity check.
Music Metadata Editor - Online ID3 Tag Viewer & Writer
View and edit ID3 tags of MP3 files, including title, artist, album, and artwork. All processing in your browser; no files uploaded.
Road Trip Playlist Time Calculator – Online Music for Miles
Enter total drive time or playlist length to figure out how many songs you need. Convert time to estimated tracks.
Image Straighten Tool - Online Fix Crooked Horizons
Draw a line along the horizon and the tool rotates the image to make it perfectly level. Small rotation. Canvas editing.
Brute Force Time Estimator - Online Password Cracking Simulation
Enter a password and see the estimated time it would take to crack using brute force at different speeds. Educational.
Easter Date Finder - Online Computus Algorithm for Any Year
Find the date of Easter Sunday for any given year. Learn about the computus algorithm. Simple and accurate.
Knife Sharpening Angle Guide – Online Whetstone Chart
Select knife type and see recommended sharpening angle. Visual guide with degree display. Perfect edge every time.
Piano Chord Finder - Online Visual Keyboard & Notes
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
IPv4 Subnetting Practice Quiz - Online CIDR & Netmask Drills
Practice calculating network ID, broadcast address, and usable IPs from a random IP/CIDR combination. Instant feedback and score tracking. Perfect for CCNA prep.
Drum Shell Fundamental Note Calculator – Online Bearing Edge
Enter drum diameter, depth, and material to find the shell's approximate fundamental note. For tuning reference.
Native Accordion Group Generator - Online <details> Sync
Build a group of `<details>` elements where opening one closes others. Optional JavaScript. Copy the accessible snippet.
Drywall Sheet Calculator - Online Gypsum Board Quantity Estimator
Enter room dimensions and number of walls to calculate needed 4x8 or 4x12 sheets, plus joint compound and tape estimate. Local tool.
Keyboard Event Debugger - Online See keydown Key Data
Press any key and see the full KeyboardEvent object: key, code, keyCode, modifier status. Dev tool.
Online Scientific Calculator - Free Advanced Math Tool
Full-featured scientific calculator with trigonometric, logarithmic, and exponential functions. Clean interface and keyboard support. No installation required.
Accessible Chart Palette Builder – Online Data Visualization
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
Solubility Rules Reference - Online Quick Chemistry Table
Classic solubility rules for ionic compounds in water. Determine if a salt is soluble or forms a precipitate. Static guide.
Day of the Week Calculator - Online Find Weekday from Date
Find what day of the week any past or future date falls on. Uses Zeller’s congruence. Fun historical reference tool.