Files stay local
Supported files are processed in your browser. Compressly does not need to store them on a server to create the download.
Free file compressor · No account needed
Make files smaller and usable, right in your browser.
Compress PDFs, images, and text-like files without uploading them to a server. Choose your settings, process locally, and download the result.
- Browser processing
- Multiple files
- No signup
Supported formats
PDFJPGPNGWebPSVGText
Files are processed locally whenever your browser supports it.
File compressor
Drop PDFs, images, or text files. Downloads appear when each job is done.
Choose files or drag them hereUp to 20 files, 100 MB each. PDF, JPG, PNG, WebP, SVG, CSV, JSON, and text.
How Compressly handles files
Honest PDF results
PDF compression depends on the source. Compressly performs safe structural optimization and explains when a document is already compact.
No signup required
There is no account, queue, or onboarding flow. Select files, compress them, and download the results.
Get better compression results
Learn which formats and settings work best before you process an important file.
PDF guide
Why some PDFs barely shrink
Understand scans, embedded images, and structural optimization.
Image guideJPEG, PNG, or WebP?
Choose a format that matches quality, transparency, and compatibility.
Practical guideMeet email and form limits
Reduce attachments without making important details unreadable.
What Compressly is useful for
The tool is built for everyday file-size problems: attachments, uploads, school portals, admin forms, and quick file sharing.
Email attachments
Shrink large photos, PDFs, and text exports before sending them through email or chat.
Forms and portals
Reduce documents before uploading to websites that enforce strict file-size limits.
Private quick fixes
Handle routine compression in your browser without creating an account or waiting for a server queue.
Common questions
Compression results depend on the file type and how the original file was created.
Are my files uploaded to Compressly?
The current compressor is browser-first. Images, PDFs, and text-like files are processed locally by your browser whenever supported.
Why did my PDF not get much smaller?
Some PDFs are already optimized or mostly made of scanned images. This version safely rewrites PDF structure, but it does not aggressively change image quality inside PDFs yet.
Which image format should I choose?
Keep original is safest. WebP is usually smaller for web use, JPEG is widely compatible for photos, and PNG is best when transparency or crisp graphics matter.
Can I compress many files at once?
Yes. Select or drop multiple supported files, then run the compressor. Each file gets its own download when processing finishes.