Free File Compressor 2026
Compress images, PDFs, videos & documents by up to 90% instantly. No signup, no watermarks, unlimited use — professional results in seconds.
Drop your files here, or click to browse
Compress several files at once. Up to 250 MB each.
How small should it be?
Each file is compressed to be at or under this size. If a target is too small for a file to stay readable, we tell you and give the best result we can.
Your files are processed once and are not kept on our server.
Why Use AZRS File Compressor?
Professional file compression that actually works
Image Compression
Reduce JPG, PNG, WebP, GIF files by 60-90% while maintaining visual quality. Perfect for websites and social media.
PDF Optimization
Compress large PDF files by 20-50%. Ideal for email attachments and document sharing.
Document Files
Analyze DOCX, XLSX, PPTX files. Already compressed format, but we'll show optimization tips.
Video & Audio
Get compression recommendations for MP4, AVI, MOV, MP3 files. Guidance on best tools and settings.
Custom Quality
Choose compression quality from 10% to 100%. Balance between file size and quality based on your needs.
Privacy First
All files are processed securely and deleted immediately. No storage, no tracking, complete privacy.
How It Works
Compress any file in 3 simple steps
Upload File
Drag & drop or click to browse. Supports images, PDFs, documents, videos & audio.
Choose Settings
Use AUTO for best results, or MANUAL to set exact quality from 10–100%.
Download Result
Get your compressed file instantly with full size savings stats shown.
Supported File Formats
Compress almost any file type
Images
JPG, PNG, WebP, GIF, BMP, TIFF
PDF Files
PDF documents & scanned pages
Documents
DOCX, XLSX, PPTX files
Videos
MP4, AVI, MOV, MKV, WebM
Audio
MP3, WAV, OGG, FLAC, AAC
Frequently Asked Questions
Everything you need to know about file compression
Yes! 100% free forever with unlimited usage. No hidden fees, no subscriptions, no watermarks. Compress as many files as you want, whenever you want.
It depends on the file type and content. Images typically compress 60–90%, PDFs 20–50%. Documents like DOCX/XLSX are already internally compressed so savings are minimal. Videos and audio require specific tools (we provide guidance).
No. All files are processed in real-time and automatically deleted immediately after compression. We never store, view, analyse, or share your files. Your data stays completely private.
Lower quality (10–50%) = maximum compression but visible quality loss. Medium (60–80%) = balanced compression with minimal visible loss. High (85–100%) = small size reduction, best quality. We recommend 85% for most uses — compression is nearly invisible to the human eye.
Yes! Set quality to 100% for lossless PNG compression — this applies PNG-specific optimisation (removing metadata, optimising colour palette) without any visible quality loss. For further reduction, 90–95% quality is nearly indistinguishable from the original.
Images: 50MB max. PDFs/Documents: 100MB max. Videos: 500MB max. These limits ensure fast processing for all users. For larger files, consider splitting them first.
Video and audio compression typically requires dedicated tools like ffmpeg or HandBrake. We provide file analysis and detailed recommendations with the best settings for your specific files, so you can compress them using free desktop tools.
Lossless compression (100% quality) reduces file size without any data loss — the decompressed file is identical to the original. Lossy compression (below 100%) achieves greater size reductions by permanently removing some data, but at high quality settings (85%+) the difference is virtually undetectable.
At 85% quality (our recommended setting), compression artifacts are virtually invisible. You'd need to view at 400% zoom and compare side-by-side to spot any difference. For professional printing, use 95%+. For web use, 75–85% is perfect.
Most email providers limit attachments to 10–25MB. Upload your file, use AUTO mode, and compress. For images, 85% quality typically reduces a 5MB photo to under 1MB. For PDFs, AUTO mode will optimise fonts, images, and remove unnecessary metadata.
Built by AZRS Corp
AZRS Corporation is a technology company based in Fremont, California, specialising in AI-powered web tools. We build free, accessible software that helps people optimise their files and workflows.
Free Online File Compressor
Shrink images and files so they upload faster, email easily and take less space. Choose automatic compression for the best balance, or set the quality yourself and see how much space you save before you download.
Smaller files load faster on websites, fit within email and form upload limits, and free up storage on your phone and computer.
Automatic or manual
Let the tool pick the best setting or control the quality yourself.
See the savings
Compare original and compressed size instantly.
Popular formats
Works with common image and document formats.
Free and private
No signup and files are discarded after processing.
How to use it
- Upload your file.
- Choose auto or manual quality.
- Click compress.
- Download the smaller file.
Frequently asked questions
How much can a file be compressed?
It depends on the file. Photos often shrink by 50 to 90 percent with little visible difference.
Will quality be lost?
High quality settings are nearly invisible. Lower settings save more space but reduce detail.
Is the file compressor free?
Yes, it is free with no signup.
Are my files kept?
No. Files are processed and then discarded.