Upload
Choose any supported file. Set your goal, mode, and optimization profile.
Intelligent compression platform
Shrink files smarter.Not just smaller — optimized.
Click-Compress is a free online file compressor for PDF, video, documents, and data — routes each upload to the right path automatically. Watch how your file flows through the pipeline below.
How compression works
Upload → analyze → compress → download. Each step runs locally with format-specific processing.
40%+
Target savings
6+
File categories
3
Compression modes
100%
Local-first option
New · Interactive help
Ask Click your questions
Not sure which mode to use? Wondering if we support your file type? Chat with Click — type or talk. Get clear answers about compression, privacy, and getting started. No tech jargon.
- · How to compress step by step
- · Best mode for PDF, video, and images
- · Optional voice input & spoken replies
Available on every visit via the floating Ask Click button bottom-right.
Popular free compressors
Dedicated tools for the file types people search for most.
What we compress
One platform, specialized pipelines per format — pick the right mode and we handle the rest.
Video
MP4, MOV, MKV, AVI
Re-encodes video for smaller size while keeping playback compatible on phones and desktops.
Typical savings: 40–80%
Learn more →
PDF documents
Runs multiple optimization passes and picks the smallest valid output.
Typical savings: 30–50%
Learn more →
Images
PNG, JPG, WebP, BMP, TIFF
Progressive quality and scale steps toward your size target.
Typical savings: 35–60%
Documents
DOCX, XLSX, PPTX, ODT
Packs office files with the best lossless strategy for text-heavy content.
Typical savings: 20–45%
Learn more →
Text & data
TXT, JSON, CSV, XML, HTML, MD
Deep compression for structured and plain text files.
Typical savings: 50–90%
Learn more →
Archives
Compressed wrappers, generic binaries
Decompresses wrapper formats, detects inner content type, then applies the right optimizer.
Typical savings: Varies
Ready to reduce your file size?
Open the workbench, upload any supported file, and download an optimized version in minutes. Not sure where to start? Ask Click.