PDF Utilities
Smart Compress
One-for-all file size reducer — auto-detects PDF, image or Office and shrinks accordingly.
Drop files here or click to browse
Accepts .pdf,.jpg,.jpeg,.png,.webp,.bmp,.gif,.docx,.doc,.xlsx,.xls,.pptx,.ppt · One file at a time · Up to 100 MB each
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One universal compression tool that auto-detects your file type and applies the right algorithm. Feed it a PDF, JPG, PNG, WEBP, DOCX, XLSX or PPTX and Smart Compress picks the optimal shrinking strategy — Ghostscript for PDFs, quality-72 progressive JPEG for photos, optimized PNG for graphics, LibreOffice-to-PDF-then-compress for Office documents.
Common ways to use Smart Compress
Bulk email
Shrink any attachment type in one pass without picking the right compressor.
Web assets
Compress a mixed set of images and PDFs for a blog post to keep pages fast.
Cloud storage
Reduce Dropbox / OneDrive footprint on giant office decks.
Send to mobile
Cellular connections are slow — smaller files download faster.
Batch archive
Compress an entire folder's worth of mixed formats before zipping and archiving.
Smart Compress — frequently asked questions
What formats does it recognise?
PDF, JPG/JPEG, PNG, WEBP, BMP, GIF, DOCX, DOC, XLSX, XLS, PPTX, PPT. Unknown types are zipped for a small size reduction.
How much smaller will it get?
Depends on file type. PDFs: 40–80%. JPEGs: 30–70%. PNGs: 20–50%. Office docs: 50–90% (because we convert to PDF first).
Does Office compression change the format?
Yes — a DOCX/XLSX/PPTX comes back as a compressed PDF. If you need the file to remain editable, use Compress PDF only on the output of an internal Save-As-PDF.
Is quality preserved?
Yes for most everyday viewing. Print-critical work may need a specialised tool.
Is there a size limit?
Same as other tools — 100 MB per file.
Pro tips for Smart Compress
- Rename files with their real extension before uploading — Smart Compress relies on the extension to pick the compression strategy.
- For photos, resize to display-size (2000 px on the long edge) before compressing to save even more.
- For maximum control, use format-specific tools like Compress PDF instead.
How to use Smart Compress
- 1. Upload — drop your .pdf,.jpg,.jpeg,.png,.webp,.bmp,.gif,.docx,.doc,.xlsx,.xls,.pptx,.ppt file(s) into the box above or click to browse.
- 2. Configure — set any tool options (password, angle, watermark text) if applicable.
- 3. Convert — click Convert now. Processing usually takes 3–10 seconds.
- 4. Download — save the result to your device. Your file will auto-delete from our servers in 1 hour.
Why use Smart Compress?
Free & unlimited
No signup, no daily limit, no watermark on the output.
Private by default
HTTPS upload, auto-delete after 1 hour, zero tracking of your document contents.
Works everywhere
Windows, macOS, Linux, Android, iOS — anywhere with a modern browser.