AI Tools & Utilities
Free interactive calculators, text formatters, image converters, and daily AI developer utilities. Fast sandboxed execution.
Featured AI Tools & Utilities (24)
Choose light outerwear for a specific occasion outfit
HTML application shared via Pagepod guest runner.
HumanPen — Free re-runs on still-flagged paragraphs
HumanPen free-retries still-flagged spans after a recheck ≥20%, keeps DOCX layout where possible, and starts with 100 free credits ≈ 1,000 words.
HumanPen — When detectors disagree, read the report
Two angles: flagged spans first; portal badges are not verdicts.
New Eden Axes — EVE Faction Ideology Quiz
Which EVE Online faction matches your ideology? Answer 30 questions to discover your New Eden alignment.
hp probe
Two practical angles on AI-writing detectors: flagged spans first, and why portal badges are not verdicts. HumanPen keeps human drafting in the loop.
Regex Playground & Live Pattern Visualizer
Fast, 100% client-side regular expression tester and syntax highlighter. Test complex regex patterns with live capture group inspection and zero data transmission.
Focus Flow - Minimalist Pomodoro & Soundscape Studio
Distraction-free Pomodoro productivity timer paired with synthesized ambient soundscapes (rain, cafe, white noise). Stay in deep flow state with zero tracking or clutter.
Color Palette Studio & WCAG Contrast Checker
Professional design color palette generator with integrated WCAG 2.1 AA/AAA accessibility contrast auditing. Generate harmonious color schemes and verify legibility instantly.
Offline JWT Inspector & Security Debugger
Secure 100% client-side JSON Web Token decoder and inspector. Color-coded Header, Payload, and Signature breakdown with expiration countdown without sending tokens to any server.
Retro Pixel Art Studio (16x16)
Minimalist in-browser sprite editor for creating 16x16 retro pixel graphics. Choose from authentic 8-bit color swatches and export crisp PNG sprites with one click.
KaTeX Live Mathematical Typography Studio
High-speed real-time LaTeX math formula editor and renderer powered by KaTeX. Type complex equations and get instantaneous typography previews with zero server latency.
SVG Wave & Curve Divider Generator
Design organic, smooth SVG wave dividers for modern landing pages. Customize wave complexity, amplitude, crest crests, and color fills with instant one-click SVG export.
CSS Box Shadow Studio & Elevation Generator
Interactive CSS box-shadow generator with real-time blur, spread, offset, and opacity controls. Design refined, modern elevation layers for cards and dialogs.
Image to ASCII Art Converter
Convert photos and graphics into text-based ASCII character art in real time. 100% client-side canvas luminance mapping with instant copyable text output.
Offline Text Diff Checker & Code Comparator
Compare two text snippets or code blocks side-by-side with color-coded line diffing. 100% client-side privacy ensures your proprietary source code never leaves your device.
Online Metronome & Tap Tempo BPM Finder
Precision audio metronome and rhythm tap tempo calculator powered by the Web Audio API. Keep steady time from 40 to 240 BPM with visual beat indicators.
JSON Formatter & Tree Validator
Fast, 100% client-side JSON formatting, indentation, and syntax validation studio. Pretty-print messy JSON, minify payloads, and inspect nested structures with zero latency.
CSS Gradient Studio - Multi-Stop Gradient Maker
Visual design studio for creating modern linear and radial CSS gradients. Fine-tune angles, color stops, and opacity with instant CSS code generation.
Base64 Studio - Encode & Decode Online
Instant, bi-directional Base64 encoder and decoder with UTF-8 character support. Convert text and strings to and from Base64 with zero server roundtrips.
Offline QR Code Generator with PNG Export
Generate clean, high-density QR codes for URLs, text, and contact information. 100% client-side rendering with instant lossless PNG download.
Lorem Ipsum Dummy Text Generator
Generate clean, randomized Latin placeholder text for UI mockups, wireframes, and typesetting. Select paragraph counts with one-click clipboard copying.
Markdown Live Studio & Word Counter
Distraction-free split-pane Markdown writing environment with real-time HTML preview and reading statistics. Write documentation, articles, and notes with zero server latency.
URL Percent Encoder & Query Parser
Percent-encode special characters in URLs or decode obfuscated query parameters. Ensure URLs conform to RFC 3986 with instant client-side conversion.
Aspect Ratio Calculator & Dimension Resizer
Calculate proportional width and height dimensions across standard aspect ratios (16:9, 4:3, 1:1, 21:9). Simplify custom pixel resolutions with Euclidean reduction.
Curated Pillar Specifications & Sandbox Standards
Zero-Installation Client Execution
Every application in this collection executes client-side within an isolated, hardened iframe sandbox. Zero server round-trips and instant startup.
Hardened CSP Sandboxing
Enforces strict Content Security Policy without allow-same-origin privileges to physically protect visitor data and prevent cross-site leakage.
Instant Shareable Permanent URLs
Each published application receives a permanent canonical link. Ideal for documentation embeds, interactive prototypes, and quick client previews.
Public Curation & Provenance
Community-contributed single-file HTML tools and prototypes, preserved with permissive open-source licenses and author attribution.