1001 articles in this category
AI Crawler Checker audits your robots.txt and meta tags against GPTBot, ClaudeBot, CCBot, PerplexityBot and other AI crawlers, then hands you copy-paste blocking snippets.
The Annuity Calculator computes sustainable monthly withdrawals from a lump sum, with fixed or inflation-adjusted payouts, a depletion date, and total interest earned.
Turn raw ANSI escape codes into styled HTML with the ANSI to HTML Converter β colors, bold, italic, underline, strikethrough, 256-color, truecolor, dark or light live preview, fully client-side.
Learn how to merge multiple audio files into one seamless track with Audio Joiner, a free in-browser tool that adds crossfades or gaps β and never uploads your audio.
Use the free BAC Calculator to estimate blood alcohol content over time with the Widmark formula, including time-to-zero projections and legal-limit thresholds.
Use the free Bicycle Gear Calculator to compute gear inches, development meters, gain ratios and speed at cadence from your chainring, cassette and wheel size β instantly in your browser.
The Big Number Calculator performs exact BigInt arithmetic on huge integers β factorials, powers, sums, products and floor division with remainder β entirely in your browser.
Use the free Board Foot Calculator to compute board feet and total lumber cost for multiple plank sizes, complete with wood species price presets and a waste allowance.
Use the free Canal Boat Cost Calculator to estimate annual narrowboat living costs β mooring, licence, insurance, diesel, pump-out, blacking, safety certificate and maintenance reserve β with a clear monthly breakdown.
The Carton Capacity Calculator computes items per carton and cartons per pallet or container from your item and box dimensions, with orientation rotation and fill-ratio stats.
CLAUDE.md Generator helps you build a CLAUDE.md project context file for AI coding agents from your repo commands, architecture notes, and team conventions β free, right in your browser.
Learn how a coffee brew ratio calculator turns dose, water, and ratio into perfect pour-over, espresso, French press, and cold brew recipes β plus what each ratio actually tastes like.
The Countertop Calculator estimates slab count, edge-finishing length, and installed cost from your kitchen dimensions, with cutout deductions, waste allowance, and price presets built in.
CPU Flamegraph Visualizer renders perf script and py-spy output into an interactive SVG flame graph in your browser. Zoom into hot frames, search by name, and find CPU bottlenecks with no install.
Cron Gap Simulator plots the next fire times of multiple cron expressions on one shared timeline, exposing silent gaps, overlapping runs, and timezone or DST surprises before they reach production.
CSS Masonry Generator lets you visually build a true masonry layout with pure CSS and a multi-column fallback, complete with a live preview and copy-paste HTML and CSS output.
Use CSV Validator to check any CSV file against RFC 4180 and catch ragged rows, unescaped quotes, BOM issues, and other csv errors before an import fails.
Plan your deck with the free Decking Calculator β estimate deck boards, joists and screws from your deck dimensions, with waste allowance and cost totals, all client-side.
The Duplicate File Finder compares files by SHA-256 hash, groups true duplicates, and suggests which copies to keep or delete β entirely in your browser, with nothing uploaded.
Use the EML Header Viewer to open .eml files in your browser and inspect headers, SPF/DKIM/DMARC verdicts, Reply-To mismatches, and the Received chain - with no upload required.
EPUB Reader lets you open and read e-books directly in your browser, with chapter browsing, adjustable typography, and text extraction β fully offline, with no upload needed.
The free Fence Calculator turns your perimeter length, gates and picket dimensions into exact fence posts, rails, pickets, concrete bag estimates and full cost totals β instantly, right in your browser.
See mojibake instead of text? File Encoding Detector identifies the true encoding of any text file β UTF-8, UTF-16, Shift-JIS, TIS-620 β and converts it cleanly to UTF-8, entirely in your browser.
File Encryptor locks down any file with AES-256-GCM entirely inside your browser β encrypt with a passphrase, verify the round trip, and never upload a single byte.
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