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Generate alphabet matching worksheets with letter ranges, cue words, repeatable shuffles, answer keys, and print-ready student sheets.

Analyze application log excerpts in your browser, group repeated failure patterns, and review severity counts, time buckets, and triage rows.

Build printable beginning-sound worksheets from words, focus sounds, and seeded choices with answer keys, review notes, and sound charts.

Minify CSS in your browser, preserve token-sensitive syntax, compare byte savings, and review parser, source-map, and compatibility warnings.

Build printable CVC word practice sheets from short-vowel lists, with family filters, sound boxes, teacher ledgers, answer keys, and review notes.

Reshape headings, identifiers, filenames, and slugs into 13 case styles with line scope, acronym handling, and accent-folded code output.

Turn item lines into a checklist, to-do list, or reading log with clean Markdown drafts, review tables, and CSV, DOCX, and JSON exports.

Create citation drafts for web, book, article, legal, dataset, media, and AI sources with style entries, in-text forms, and review notes.

Turn a reading passage into a printable cloze worksheet with targeted blanks, a shuffled word bank, answer key, teacher checks, and exports.

Check Conventional Commit headers or full messages, catch rule findings, and map valid commits to major, minor, patch, or no release impact.

Generate a custom crossword from answer-clue lines, compare crossings and unused entries, then download puzzle sheets and answer keys.

Generate a decodable reading passage from a phonics focus, then check running-word coverage, target words, review flags, and teacher notes.

Clean a one-entry-per-line list in your browser, remove repeats with case and whitespace rules, and audit kept or dropped rows.

Create printable flashcard sheets from pasted or imported pairs, with duplex checks, seeded shuffles, cut guides, parse logs, and exports.

Decompress gzip, zlib, or raw deflate text in your browser from Base64, Base64URL, hex, escaped bytes, or local files with byte evidence.

Look up an HTML entity, symbol, name, or code point, then compare named, numeric, Unicode, and context-safe paste forms for markup or code.

Escape HTML snippets for text or attributes, decode nested entities in your browser, and review a transform ledger plus copy-safety warnings.

Compress pasted HTML locally, see saved bytes, and catch comment, raw-text, inline-spacing, and attribute-shortening risks before copying.

Turn pasted HTML, emails, or page fragments into browser-local plain text with scope choices, link checks, alt-text handling, and ledgers.

Decode escaped HTML text or small files in your browser, inspect each entity change, and flag unresolved references or script-shaped output.

Turn HTML fragments, articles, or page exports into readable Markdown with dialect controls, table fallback warnings, and local review exports.

Build an interview guide from a role or research brief with tailored questions, follow-up probes, scoring anchors, risk checks, and exports.

Turn messy JSON into readable, compact, sorted, or line-delimited output with duplicate-key, size, and number-precision warnings in your browser.

Sort JSON into repeatable key order in your browser, clean JSONC drafts, flag duplicate names, and review paths before copying output.

Validate JSON, JSONC, JSON5, or JSON Lines in your browser, then catch syntax errors, duplicate keys, unsafe numbers, and root-shape issues.

Turn nested JSON or JSON Lines into spreadsheet-ready CSV or TSV, with record-path selection, flattened headers, previews, and formula warnings.

Minify JavaScript locally, compare raw and gzip savings, and catch syntax, module-scope, comment, console, and source-map risks.

Generate repeatable lorem ipsum for mockups, tune paragraph or word targets, and review metrics before copying formatted output.

Preview Markdown locally with GFM or CommonMark rules, raw-HTML safety controls, heading anchors, source audits, and exportable HTML.

Turn CSV, TSV, semicolon, or pipe rows into GitHub-style Markdown tables with header detection, pipe escaping, and column audits.

Convert Markdown to HTML in your browser, review safe preview output, and catch raw HTML, external-link, parser, and size warnings before reuse.

Decode written Morse into readable text in your browser, catch separator or unknown-token problems, and create timing charts or practice audio.

Encode text or TXT files into Morse code with unknown-character checks, WPM and Farnsworth timing, playback, timeline charts, and WAV audio.

Build multiple-choice worksheets from pasted rows, CSV, or Aiken blocks with seeded versions, answer keys, quality checks, and print-ready exports.

Build phonics worksheets from word lists and target sounds, then check answer keys, teacher notes, coverage balance, and printable prompts.

Create picture-word matching sheets from cue and word rows, with shuffled word banks, answer keys, teacher checks, and printable exports.

Convert Unicode domains and xn-- Punycode labels in your browser, with DNS length checks, script warnings, and copy-ready forms.

Check English readability from pasted text or TXT files with grade estimates, reading-ease bands, sentence flags, word cues, and charts.

Calculate WCPM from attempted words, errors, and exact reading time, then compare accuracy, benchmark bands, and progress notes.

Check an English passage for readability grade, formula spread, target-band fit, and sentence or long-word flags before revising.

Test a JavaScript regex against examples that should pass or fail, with whole-line matching, flag checks, match spans, and timeout guards.

Test a JavaScript regex against pasted text or files, inspect match spans and capture groups, catch timeout warnings, and preview replacements.

Score a running record from running words, errors, self-corrections, time, and comprehension, with bands, pace, and cue-pattern notes.

Compile SCSS, indented Sass, or plain CSS in your browser, then check compiled CSS, source maps, metrics, and Sass audit warnings.

Scan config, log, and ticket samples for secret-like values with masked findings, provider-pattern hits, entropy scoring, and rotation cues.

Create sight-word practice sheets from presets or custom lists with local file import, teacher keys, word ledgers, home notes, and warnings.

Generate readable slugs for URLs, files, anchors, and CSS selectors from single titles or batches with Unicode, trimming, and collision checks.

Create printable spelling tests from word lists, with sentence prompts, answer keys, teacher scripts, review ledgers, and word-balance checks.

Group pasted stack traces into stable fingerprints, compare frame evidence, and spot recurring failures while keeping trace text in the browser.

Draft survey questions from a research goal, audience, topic areas, and response mix, with fatigue cues, type balance, and pilot checks.

Compare original and revised text locally, then review unified diff hunks, change ledgers, ignore-option matches, warnings, and exports.

Encrypt or decrypt small text in your browser with AES-GCM, Argon2id or PBKDF2, portable envelopes, integrity checks, and byte-size evidence.

Hash exact UTF-8 text in your browser, compare SHA-2, SHA-3, MD5, SHA-1, or RIPEMD-160 digests, and save exportable comparison records.

Sort pasted lists or TXT/CSV text in your browser with natural order, cleanup filters, seeded shuffle, counts, and copy-ready output.

Build a translation quote from source words, CAT leverage, language pair, deadline stress, format fees, margin checks, tax, and deposit.

Look up a character, code point, grapheme, or escape with Unicode names, U+ values, UTF bytes, normalization checks, and hidden-text warnings.

Create a vocabulary matching worksheet from term-definition pairs, with seeded shuffles, distractor checks, answer keys, and printable exports.

Measure drafts or TXT files in your browser with word totals, readability scores, phrase repeats, frequency charts, and exportable reports.

Create printable word scramble worksheets from word-and-hint lists, with repeatable seeds, difficulty controls, answer keys, and source-list checks.

Generate a word search puzzle from A-Z word lists, with repeatable seeded layouts, direction controls, play mode, answer keys, and placement reports.

Format YAML in your browser with parse warnings, path rows, change deltas, and JSON output before replacing configuration text.

Check YAML text or files in your browser, find parser errors and duplicate-key risks, then inspect document counts, paths, and parsed JSON.