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Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context.

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Tools3212
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Samples593
Visualizations471
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Hubs239
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Images, Audio & Video657

Image, audio, and video processing, conversion, and optimization tools

Math, Date & Finance647

Calculators, numerics, date logic, statistics, and finance tools

Design & Color298

Color, layout, graphics, visual styling, and design helper tools

Text & Writing209

Writing, cleanup, formatting, extraction, and text analysis tools

Developer & Web193

Developer utilities, networking, web debugging, and automation helpers

Conversion & Encoding175

Format, file, archive, unit, and encoding conversion tools

Lead Generation Quiz Launch and Contact Handoff
Memorial Drafts: Family Review and Print Handoff
Private Habit Records: Backup, Restore and Sharing Review
Article to X and LinkedIn Drafts: Fact Review and Handoff
Markdown Interactive Deck Review and Offline Handoff

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AI Tools

NSFW Image Content Detector

AI content-moderation classifier using NSFWJS to flag uploaded images as safe or potentially inappropriate. Built for moderation and compliance review of your own files — it analyzes uploads only and is not an image search or discovery tool. Supports JPEG/PNG/WEBP/GIF.

AI Tools

Audio to Text Transcriber (AI)

Transcribe speech from audio (wav/mp3/m4a/flac/ogg/webm/aac) to text, SRT, VTT or JSON using the grok-stt AI model. Up to 10 minutes.

Finance

Polymarket Probability Term Structure

Turn Polymarket odds into a probability term structure: implied probabilities by expiry, with overround removed.

Finance

Italian Pension Revaluation Simulator

Simulate the yearly revaluation (perequazione) of an Italian pension: per-band breakdown, scaglioni vs blocchi, and 2026 vs the 2027 draft.

Format Conversion

Text to Excel Converter

Paste CSV, TSV, JSON, key-value, or INI text and download a formatted XLSX spreadsheet

Design

Image Grid Slicer

Preview and slice an image into a 3×3, 3×2, 2×3 or custom grid. Reframe square tiles and download individual images or ZIP locally.

Utilities

Private Habit Heatmap Tracker

Your habits stay in this browser. No account, no AI, no automatic upload.

Health

Private offline period tracker

No account, AI or record uploads. The independent app has no ads or analytics.

Media

PS1 Retro Texture Converter

Convert local images to RGB555 or 16/256-color textures with ordered dithering and an affine, vertex-snapped 3D preview.

Document Tools

HTML/CSS to Print-Ready PDF

Typeset a multi-page, print-ready PDF straight from HTML and CSS: @page size/margins, running chapter headers, page counters, crop and registration marks, bleed.

Development

Ephemeral Cloud Sandbox Cost Calculator & Teardown Auditor

Price a throwaway sandbox across AWS, GCP, Azure, Vercel, Fly.io, Railway, Replit, Codespaces and Gitpod, then audit what forgetting to tear it down actually costs per forgotten day.

Web & Internet

IndieWeb ↔ Fediverse Bridge Analyzer

Parse microformats2 (h-entry/h-card), validate Webmention/IndieAuth/Micropub/Microsub, emit ActivityPub Object+Activity dual views and reply-all routing — W3C-spec accurate