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A focused math solver with examples and reference links

Validate and convert coded measurement-unit expressions

Media conversion with original-and-output previews

Create and check digital-cinema and IMF packages

Lossless audio compression with tagging and error checks

Combine media transcoding with automated quality-control workflows

Convert subtitle batches while checking text and timing

Online PDF editing with page-layout and archive tools

Open-source validation for PDF/A and PDF/UA

PDF tagging, manual repair, and built-in validation

Count characters in short text

Monitor word counts and repeated keywords

Combine a resume and portfolio with a more directed job search

Look up a flight or investigate airport activity

Compare rental suppliers while checking deposits and fuel terms

Plan a local or airport ride using the options offered for the pickup

Chemical calculations with balancing and molar-mass tools

School-exam revision using subject lessons, flashcards and question practice.

AI-powered conversion analysis for landing pages, marketing sites and product pages.

AI writing tools for creating, editing, and checking text.

Chrome extension that summarizes Amazon reviews with AI.

AI chat, writing, image tools and a Chrome extension from Arvin.

Preview colour-vision differences through a screen filter or phone camera.

A mental health app with meditations, sleep tools, coaching, and online therapy.