● Every tool free — no signup, no watermark
Compress ZIP files online — free, fast, private.
Shrink your ZIP archive right here, then compress video, images and PDFs with the same free toolkit. Files are processed on our servers and deleted automatically within 24 hours.
Deleted automatically in 24 h No watermarks, ever Works on any device No account required
Step 1 of 4
Choose your file
Deleted automatically in 24 h No signup No watermarks, ever
Step 2 of 4
Choose compression strength
Step 3 of 4
Compress
Step 4 of 4
Download
The toolbox
Built for the files you actually send
A tool appears here when it genuinely works — never before.
ZIP CompressorFree ZIP file compressor — reduce ZIP file size online, no WinZip, no signup. Plus straight answers on opening, extracting and converting ZIP files.Image CompressorShrink JPG, PNG, WebP and AVIF images by up to 80% while keeping them sharp. Transparency always preserved — free, private, no signup needed.Video CompressorReduce video file size by up to 90% without losing quality. Compress MP4 and more to any target size — free, no watermark, no signup needed.PDF CompressorReduce PDF file size by up to 90% while keeping text sharp and selectable. Perfect for email attachments — free, no watermark, no signup.Image ConverterConvert images between WebP, AVIF, JPG and PNG in seconds with transparency preserved. Free online image converter — no watermark, no signup.Image ResizerResize JPG, PNG, WebP and AVIF images to exact pixel dimensions. Aspect ratio stays correct automatically — free, no watermark, no signup.AI Document EditorUpload a scan, photo, or PDF and edit the text right on the document. AI reads every block; you fix, redact, and export — free, no signup.Audio CompressorFree MP3 compressor online — reduce MP3, WAV, FLAC, AAC, OGG & M4A file size for WhatsApp, email or uploads. No signup, no watermark. Compress audio now.Invoice GeneratorCreate a professional PDF invoice in your browser — free, no signup, no watermark. Add your logo, tax and discounts; nothing you type leaves your device.Receipt GeneratorMake a printable PDF receipt in your browser — free, no signup, no watermark. Items, tax and a PAID mark; everything stays on your device, nothing uploads.
24 hDeleted automatically in 24 h
2.0 GBFile size
14Quality modes
0No account required
Why CompressKits
Serious media tooling, without the hostility
Smart by default
We probe every file — resolution, codec, bitrate, HDR — and pick settings that fit it. One click, sensible output.
Private by design
Files upload over encrypted connections, are never shared, and are permanently deleted within 24 hours. No exceptions.
Made for real limits
Presets for WhatsApp, Instagram, YouTube, Discord and email — hit their size limits on the first try.
Learning Center
Read the guides →Guides that actually help
Plain-language explanations of how compression really works, written by the team that built the pipeline.