01Protected server
Redirect Chain Analyzer
Shows every redirect between a submitted address and its final destination. Primary users are site owners, developers and SEO editors fixing slow…
Open workspace70 specialist web utilities
Useful technical work,
without the clutter.
Inspect a website, clean a dataset, work with PDFs, tune an image or decode a stubborn header. Each tool is built around the actual job.
Local file processing where possibleClear methods and limitations
Start with the problem
Browse by what you need to fix
Featured workspaces
Tools with a little more elbow room
17Local first
Screenshot Text Extractor
Extracts editable text from screenshots and scanned images for students, editors and support teams.
Open workspace27Local first
PDF Merge Workspace
Combines several PDF files in an explicit page order without sending them to a server.
Open workspace42Local first
CSV Explorer
Opens a CSV locally, detects its structure and lets users inspect columns before importing elsewhere.
Open workspace50Protected server
YouTube Metadata Viewer
Displays public video metadata with clear source and availability limits.
Open workspace67Local first
Password Generator
Generates passwords locally from cryptographically secure browser randomness.
Open workspaceRecently added
Fresh workspaces in the catalogue
70Local first
Unit Converter
Converts common physical units with dimension checks and visible precision.
Open workspace69Local first
Date Difference Planner
Calculates calendar and elapsed differences while making timezone and inclusion choices visible.
Open workspace68Local first
Password Strength Checker
Explains guessability patterns without sending the password anywhere.
Open workspaceField notes
Guides built around real tasks
September 19, 2026
Read an Email Header From Bottom to Top
Trace delivery hops without exposing message content
September 19, 2026
Profit Margin and Markup Are Not Twins
Avoid the pricing mix-up that eats a spreadsheet
September 19, 2026
Calculate Social Engagement Rates Honestly
Choose a denominator that matches the question
How the platform works
Fast, private where practical, and honest about limits.
Purpose-built interfaces
A comparison tool compares. A scanner scans. We do not give every problem the same lonely input box.
Local first
Images, PDFs and private text stay in the browser whenever the job can be done there.
Explain the result
Status codes, confidence values and formulas come with plain-language context.
Questions before you start
Useful answers, minus the fog machine
Are the tools free to use?
The public interfaces do not require a visitor account. External services can have site-level quotas, and those limits are explained by the relevant tool.
Do files leave my device?
Files marked local are processed in the browser. Public website diagnostics use a protected server route because browsers cannot perform every network check directly.
Why do some YouTube tools need configuration?
Public metadata and statistics come from the official YouTube Data API. The site owner must add a valid server-side key before those tools can request live data.