Tools starting with Y

14 free online tools on AltFTool start with Y, listed alphabetically. Every one is free, needs no sign-up and runs in your browser.

  • YAML Formatter

    Format simple YAML, list keys, and convert YAML snippets to JSON.

    Developer

  • YAML Multi Document Splitter

    Split multi-document YAML on --- markers into separate validated files, suggest filenames, and recombine them cleanly.

    Developer

  • YAML to JSON Converter

    Convert YAML to JSON in the browser — anchors and aliases resolved, multi-document files handled, output formatted your way.

    Converters

  • Year On Year Marks Comparator

    Compare marks across semesters or years, see percentage-point change per period and the least-squares trend of your scores.

    Education & Science

  • Yes or No Oracle

    Get a mystical yes or no answer to any question. The oracle provides guidance with ancient wisdom and cosmic insight.

    Fun

  • Yoga Session Calorie Estimator

    Estimate calories burned in a yoga session by style and body weight using published MET values and the ACSM formula.

    Health & Fitness

  • Younger Version Generator

    Upload a photo and simulate what your younger self would look like, along with retro polaroid frames and childhood traits summaries.

    AI Tools

  • YouTube Description Generator

    Build a structured YouTube description with chapters, links and hashtags, checked live against YouTube's 5,000-character, 60-hashtag and chapter rules.

    Marketing & Social

  • YouTube RPM Earnings Estimator

    Estimate YouTube channel earnings from monthly views and RPM, with a low/expected/high scenario band and a CPM cross-check.

    Calculators

  • YouTube Tag Organizer

    Dedupe, group and trim YouTube tags to the 500-character field limit, with a broad/specific/long-tail mix per video type.

    Marketing & Social

  • YouTube Thumbnail Downloader

    Preview and download YouTube video thumbnails in available sizes.

    Marketing & Social

  • YouTube Title A B Tester

    Compare title variants side by side for length, mobile truncation, keyword position and shouting, with a transparent score out of 100.

    Marketing & Social

  • YouTube Transcript Generator

    Turn YouTube caption text or an .srt, .vtt or .json3 caption file into a clean, paragraphed transcript with timestamps, word count and reading time.

    Image & Video

  • YouTube Video Analyzer

    Break a YouTube link into its video id, start time, playlist and tracking parameters, rebuild clean and privacy-enhanced links, and audit a pasted title and description against YouTube's title, hashtag and chapter rules — entirely in your browser.

    AI Tools
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