UD5 Toolkit
Worm Bin Sizing Calculator – Online Square Feet per Person
Estimate the worm bin surface area needed based on the amount of kitchen scraps your household produces weekly. Right‑size your worm farm.
PDF Compressor - Online Reduce File Size Locally
PDF Compressor
Reduce PDF file size directly in your browser. 100% private – no upload needed.
Local ProcessingDrag & Drop PDF Here
or click to browse
Frequently Asked Questions
It uses powerful JavaScript libraries (like pdf-lib) to process and optimize your PDF directly in your browser. The file never leaves your device – no upload to any server.
Absolutely. All processing happens in your browser's memory. No data is ever transmitted, stored, or collected. Your privacy is fully protected.
There is no fixed limit. It depends on your device's available memory. Even very large PDFs (hundreds of MB) can be processed, though they may take a little longer.
No, our local compression focuses on removing redundant data, unused objects, and optimizing file structure. Text and images remain untouched, so there's no visible quality loss.
Local compression gives you better privacy (no upload), instant processing (no slow network transfers), and no file size restrictions. It's safer and often faster.
Currently, the tool processes one file at a time for optimal performance. You can easily compress multiple files sequentially.
All modern browsers: Chrome, Firefox, Safari, Edge, and Opera. They all support the required JavaScript features for local processing.
Only to load the tool initially. Once the page is open, the compression engine runs offline – no further internet connection is required.
Yes, it's 100% free. No hidden costs, no watermarks, no registration required. Enjoy unlimited local compression.
We remove unused objects, streamline metadata, and use efficient object streams. This reduces file size without altering your content's appearance.
Pop Rivet Size Selector – Online Sheet Thickness Guide
Enter material thickness and get the recommended pop rivet diameter and grip range.
Bird Harness Size Guide – Online Measurement & Fit
Enter your bird species and weight to find the correct harness size. Visual adjustment guide.
Envelope Size Finder – Online Match Paper & Card
Enter the dimensions of your insert and get the correct envelope size (DL, C6, etc.). Quick mail guide.
Windshield Wiper Size Finder – Online by Vehicle
Look up front and rear wiper blade sizes by car model. Never buy the wrong length again.
Crochet Hat Sizing Guide – Online Measure & Increase
Enter head circumference to get crown diameter and length. Perfect fit top‑down hats.
Jigsaw Puzzle Size Calculator – Online Table Size for Pieces
Enter piece count and piece size to estimate finished dimensions. Check if it fits your table.
Running Shoe Size Converter - Online US UK EU CM Chart
Convert running shoe sizes between US (men/women), UK, EU, and centimeters. Also includes brand-specific fit notes (general guide).
Diaper Size Finder - Online Weight-Based Size Guide
Enter baby's weight in lbs or kg to see suggested diaper sizes across major brands. General reference, no data collected.
Markdown to PDF Converter - Online Export Clean Documents
Write Markdown and instantly print/save as a styled PDF. Choose from multiple themes. Uses browser print function for high-quality output. Local only.
PDF Script Inspector - Online See Embedded JavaScript
Drop a PDF and extract any embedded JavaScript or form actions. Check for malicious code. Privacy‑friendly analysis.
PDF Page Rotator - Online Fix Upside‑Down Pages
Select which pages to rotate left or right. Save the corrected PDF immediately. All local manipulation.
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.
Resize Observer Playground - Online Watch Element Size
Drag to resize a box and see the Resize Observer callback fire. Get contentRect and borderBoxSize. Learn the API.
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.
PDF Word Counter - Online Extract & Count
Drop a PDF and count the total words, characters, and pages. Text extraction is done locally. Privacy‑friendly.
Images to PDF Merging - Online Combine & Order
Combine JPGs and PNGs into a single PDF. Drag to reorder pages. All processing happens locally; your files never leave your device.
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.
Tire Size Visualizer - Online Compare & Dimensions
Enter two tire sizes and see a side‑by‑side comparison of diameter, width, and speedometer error. Local math.
PDF Metadata Viewer - Online Read Author, Title & Keywords
Drop a PDF and see its embedded metadata: author, title, creation date, and more. No content is uploaded; pure browser PDF parsing.
Images to PDF Merger - Online Combine JPG/PNG into One
Select multiple images, arrange their order, and merge them into a single PDF document. Works offline in your browser.
HTML Fragment to PDF - Online Print Custom Section
Write or paste an HTML snippet and generate a PDF using the browser's print engine. Customize page size and margins.
HTML Minifier - Online Compress Web Pages
Reduce your HTML file size by stripping whitespace, comments, and optional closing tags. Secure browser‑based.
Timesheet PDF Generator - Online Fillable Work Log
Fill in daily work hours and tasks, and generate a printable PDF timesheet. Clean, professional layout. Local.
PDF Text Extractor - Online Copy Text from PDF Locally
Extract selectable text from a PDF using the browser's built‑in PDF rendering. Copy or download as TXT. No upload, fully private.
Webpage to PDF - Online Print & Save as Document
Enter a URL and instantly generate a PDF version using the browser's print-to-pdf engine. Private, no upload.
PDF Merger - Online Combine Multiple PDFs into One
Combine multiple PDF files into a single document. Drag and drop to reorder pages. All merging is done locally for confidentiality.
PDF Page Extractor - Online Split & Extract Pages Locally
Extract specific pages or split a PDF document into multiple files. Works entirely in the browser; your documents never leave your computer.
Online Code Minifier - JS & CSS Compression Tool
Minify JavaScript and CSS code to reduce file size for production. Remove whitespace and comments instantly. Run locally, your code stays private.
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.