Apps. Built around the task

Analyze loudness and true peaks, normalize multiple audio files to streaming, broadcast, or custom targets, preview gain, and export audio plus CSV reports locally.

Edit, rearrange, rotate, merge, split, annotate, fill forms, insert images or pages, and create sanitized PDF exports locally in your browser.

Resize, compress, convert, rename, crop, and export multiple image variants with AVIF and HEIC support privately in your browser.

Create styled QR codes for links, Wi-Fi, text, email, phone, SMS, contacts, and events, then export PNG, SVG, or print-ready PDF files locally.

Compare document versions locally with synchronized side-by-side views, inline redlines, moved-text detection, and PDF reports for text, DOCX, selectable PDFs, Markdown, CSV, and HTML.

Write, preview, debug, search, save, and export HTML, CSS, and JavaScript with CodeMirror editors, filtered console output, and responsive previews.

Crop and convert PNG, JPG, WebP, GIF, BMP, and AVIF images to optimized SVG, remove backgrounds, refine or recolor palettes, and export files or a ZIP.

Add text, logo, combined, or tiled watermarks with per-image placement, filename variables, and reusable presets, then export JPG, PNG, WebP, or ZIP files locally.

Split long text into copy-ready chunks for X, Discord, Telegram, SMS, and AI prompts using grapheme-safe character limits or token-aware overlap.

Write, search, preview, import, autosave, and export Markdown with CodeMirror, synchronized scrolling, Mermaid diagrams, frontmatter, tables, syntax highlighting, and math.

Extract and review text from PDFs, scans, images, Office files, spreadsheets, HTML, CSV, Markdown, and plain text, then export searchable PDFs or structured text locally.

Test JavaScript regular expressions in an isolated worker, inspect capture groups, preview replacements, run test cases, and copy language-specific snippets locally.

Preview realistic desktop and mobile search snippets with query highlighting, favicon, dates, ratings, and sitelinks, then review title, description, Open Graph, and Twitter metadata.

Format and convert JSON, YAML, XML, CSV, TSV, NDJSON, Markdown, HTML, BBCode, URLs, Base64, and plain text directly in your browser.

Sort, clean, deduplicate, transform, format, copy, and download text lists with locale-aware ordering and optional preserved headers privately in your browser.

Count words and characters, estimate adjustable reading and speaking times, review Flesch and ARI readability, inspect sentence balance and repeated keywords, and export reports locally.