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Kitofy

About Kitofy

Kitofy is a set of free file tools that work right in your browser. Compress, trim, merge or convert photos, video, audio and PDF on your device - without uploads, registration or watermarks.

Why we built it

Most file websites upload your files to a server, process them there and send them back. This takes time, depends on the connection and means that someone else's computer gets a copy of your photos and documents.

We wanted tools that need none of this: you open the page, add files and get the result right away, while the files stay with you.

How it works

Most processing engines are compiled to WebAssembly and run in Web Workers - background threads of the page. Your browser does all the work, so once the engine is loaded the speed depends on the power of your device rather than on the internet connection.

Once the page and the needed engine are loaded, your files are not sent anywhere. Read more on the Security page.

What you can do

The site has dozens of tools and over a hundred formats:

  • photos - compress, crop (including into a circle), resize, rotate, merge, split into parts, blur, make black and white, make an ID photo, a collage, a sticker or a favicon, add text, extract text, vectorize to SVG;
  • video - trim, compress, crop, resize, rotate, merge, split, change the speed and volume, reverse, loop, remove or add sound, extract the sound or frames, make a GIF or a video from photos;
  • audio - trim, compress, merge, split, change the speed, pitch and volume, reverse, add a smooth fade-in and fade-out;
  • PDF - merge, compress, split, rotate, reorder and delete pages, crop margins, number pages, add a watermark, set or remove a password, combine photos into a PDF, recognize text;
  • archives - extract ZIP, RAR and 7Z or create an archive, including with a password;
  • conversion between JPG, PNG, WebP, HEIC, MP4, MOV, MP3, WAV, PDF, fonts, spreadsheets, subtitles and e-books, as well as Word, Excel and PowerPoint documents to PDF.

Free and without registration

All tools are free: no account, no watermarks and no limit on the number of files. To cover hosting and development costs, the site may show advertising in the future - the tools will stay free and will still run on your device.

Built on open source

The site relies on proven open-source projects - FFmpeg, ImageMagick, pdf.js, Tesseract, 7-Zip and many others. The full list with licenses is on the Licenses page. We are grateful to their authors.

Who makes the site

Kitofy is developed and maintained by John Snob.

Get in touch

Found a bug, missing a format or have an idea? Write to us via the Contact page - we read every message.