Remove unwanted characters, lines, and whitespace.
Switch between uppercase, lowercase, title case, and more.
Sort, reverse, shuffle, and manipulate lines.
Search and replace text, extract emails, URLs, numbers.
Count words, characters, lines, sentences, and analyze text.
Reverse, repeat, and stylize text.
Encode and decode text — Base64, URL, HTML entities, hashes.
Generate Lorem Ipsum, passwords, random numbers, slugs, and more.
JSON formatter, JWT decoder, HTML editor, CSV ↔ JSON, diff, Markdown.
Age, BMI, loan, percentage calculators and unit converters — all in your browser.
Resize, compress, crop, convert, and transform images — all in your browser.
Merge, split, rotate, and convert PDFs — all in your browser, no upload.
Filter, sort, dedupe, and analyze CSV data — all in your browser.
Word, Excel, and PowerPoint conversions — DOCX, XLSX, PPTX — all in your browser.
Generate iOS / Android / Play Store icons, wallpapers, screenshots, and social-share images from one source image.
Trim, fade, normalize audio files entirely in your browser via the Web Audio API.
Convert between units of length, area, volume, weight, speed, and more — instant results in your browser.
DNS lookup, WHOIS, ping, HTTP headers, SSL checker, and IP tools.
Concrete, brick, paint, roofing, lumber, and flooring calculators for builders and contractors.
Trim, fade, normalize audio files entirely in your browser via the Web Audio API.
Trim any audio file (MP3, WAV, OGG, M4A, FLAC) to a chosen start–end range with optional fade in/out. Exports WAV. Browser-based.
Boost (or attenuate) any audio file to a target peak / RMS level. Exports lossless WAV. Browser-based.
免费的在线音频变调与变速工具。可按半音调整音频音高，或在本地改变播放速率。无需上传，安全且即时生效。
免费在线音频倒放工具。上传任何音频文件，在浏览器本地实现倒放，并下载无损倒放 WAV 格式音频。
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