What do you want to do?

Free online tools to compress, convert and resize your files. No sign-up. Image and PDF tools run right in your browser, and video and audio files are deleted as soon as they are processed.

🖼️ Image

Compress, resize and convert pictures

›Compress image ›HEIC to JPG ›Resize image

📄 PDF

Merge, shrink and convert PDFs

›Merge PDF ›JPG to PDF ›Compress PDF

🎬 Video

Compress and convert video files

›Compress video ›MOV to MP4 ›Video to GIF

🎧 Audio

Convert audio and extract sound from video

›MP4 to MP3 ›WAV to MP3

Why SizoKit

Private by design

Image tools and PDF merging run inside your browser. Video, audio and PDF shrinking use our server and delete your file right after.

Free, no sign-up

Open a tool, drop a file, download the result. No account and no watermark.

Smallest size, one click

No settings to figure out. Drop a file and we shrink it as small as we can while it still looks good.