100 Tools. Zero cloud.

Decode any playable audio to 16-bit WAV on this device.

Trim clips and join them into one WAV, with honest resampling notes.

Encode text to Base64 and decode Base64 back to text.

Pattern renames with collision-safe preview, then renamed downloads.

Convert text between upper, lower, title, camel, snake, and kebab case.

Count character occurrences with percentages.

Calculate SHA-256 / SHA-512 hashes of pasted text.

Local snippet collection with search, import, and export. No sync.

Harmonious schemes from any base color, with contrast ratios.

Min, max, mean, median, stdev for numbers; top values for text.

Translate 5-field cron schedules into plain English.

Pretty-print stylesheets or shrink them for production.

Convert between CSV and JSON with duplicate-row removal.

View and edit CSV rows in a table, then download the result.

Deterministic masking rules with counts. Preview before exporting.

Remove duplicate rows and report the removal count.

Elapsed breakdowns between dates plus date arithmetic.

Compare two picked folders: added, removed, changed, unchanged.

Analyze a folder you select: totals, type breakdown, largest files.

SHA-256 grouping across picked files. Preview before acting.

List repeated rows with their line numbers.

Quadratics and 1–4 equation linear systems via elimination.

Re-encode images to drop EXIF/XMP. Pixel-level clean, verifiable.

Per-file table with totals for anything you pick.

Recompute SHA-256/SHA-512 and compare against an expected value.

AES-GCM with PBKDF2. Keys never leave this device or logs.

Baseline SHA-256 manifests, then verify for added/changed/removed files.

Rule-based move plans by type and date. Preview first, you approve.

On-device index over a picked folder with exclude controls.

Overwrite-then-delete Jeterio-held data, with honest SSD limits.

Magic-byte identification with extension-mismatch warnings.

Plain-text or regex replacement across pasted text.

Build decks from note structure and study with SM-2 spaced repetition.

Turn video frames or images into animated GIFs with a local encoder.

Fast non-crypto checksums (FNV-1a, DJB2) for fingerprinting text.

Indent markup and flag mismatched or unclosed tags. Never executes scripts.

Pick any pixel from an image plus contrast-checked text colors.

Crop, rotate, and flip with a live canvas preview. Originals preserved.

Magic-byte identification plus PNG/JPEG structure details.

Dimensions, color type, and ancillary-chunk flags without pixel decode.

Resize images and convert between PNG, JPEG, and WebP. Originals preserved.

Conservative minification that respects strings. Never runs the code.

Convert both directions with validation and clear errors.

Format, validate, and inspect JSON documents.

Decode JWT header and payload. Signature is NOT verified.

Local notes with tags, collections, and keyword search. No sync, no AI.

Heuristic script breakdown and language hints. Estimates, never identification.

Remove repeated lines and report what was dropped.

Back up picked files to a local .zip; restore Jeterio-made backups.

Seeded sample datasets (persons, orders, inventory, feedback). No downloads.

Full-text search across notes plus .txt/.md files you pick.

AES-GCM vault with no backdoor. Encrypted at rest, auto-locks.

Scan text for credential patterns. Counts only — values never stored.

Deterministic placeholder text — same output every run.

Render Markdown to clean HTML locally. Nothing is uploaded.

Convert Markdown documents to standalone HTML offline.

Add, multiply, transpose, determinant, and inverse up to 4×4.

Flag privacy-relevant metadata (EXIF, text chunks) before sharing files.

Local node maps with drag, connect, and JSON/SVG export.

Notebooks and pages stored only on this device. Export anytime.

Generate secure passwords with the platform CSPRNG, fully offline.

Entropy estimate with concrete feedback. Nothing is stored.

Lossless re-save with object streams. Honest before/after report.

Merge PDFs in order or split page ranges out of one PDF.

Read and rewrite title, author, subject, and keywords locally.

Rearrange pages with an explicit permutation. Validated before writing.

Rotate selected pages by 90/180/270°. Originals untouched.

Best-effort text layer extraction. No OCR bundled — scanned pages yield nothing.

Local QR codes (auto version + error level). Never fetched or tracked.

Decode QR codes from images on-device. Destinations are never opened.

Flesch reading ease and grade level, computed on-device.

Test patterns against sample text with match highlighting.

Expression parser with functions, degrees/radians. No eval().

Flag likely API keys and credentials before sharing text. Local only.

CSPRNG hex, base64, passwords, and word groups. Metadata-only history.

Mask emails, phones, IPs, secrets, and custom terms with counts.

Offline transcription workbench: voice-activity segments plus manual transcript export.

Uppercase keywords and break clauses onto lines. Never executes.

Turn CSV rows into escaped INSERT statements with type inference.

Mean, median, mode, quartiles, variance, and stdev.

Rule-based cloze, flip, and multiple-choice quizzes from your notes.

Normalize line endings, trim lines, and collapse blank lines.

Compare two texts line by line.

Detect BOM, line endings, and binary-vs-text for any file.

Split text by characters, lines, or parts — and merge pieces back.

Sort lines alphabetically, numerically, or by length.

Speak text with voices installed on this device. Fully local.

Convert between unix timestamps and ISO 8601 dates.

Convert between tab- and comma-separated values.

Area, volume, speed, data, pressure, and energy — nine categories.

Convert length, weight, and temperature units instantly.

Convert between octal (755) and symbolic (rwxr-xr-x) with breakdowns.

Percent-encode text and decode percent-encoded input.

Split URLs into protocol, host, path, query, and fragment.

Generate RFC 4122 v4 UUIDs with the platform CSPRNG.

Re-encode playable video to WebM with your device codecs.

Trim segments and record clip playlists to a single WebM.

Count words, characters, sentences, and estimated reading time.

Check well-formedness and pretty-print XML.

Validate YAML and format it canonically.