PDF Compressor
Reduce your PDF file size. No server upload, no usage limit β processes directly in your browser.
Drag a PDF file here or click to upload
PDF files supported Β· Max 50MB
Text, fonts & vectors always preserved | Metadata & unused objects auto-removed
Why IMGLOO PDF Compressor?
Text 100% Preserved
Only images are selectively recompressed β text, fonts, and vector graphics stay untouched. No broken characters, no loss of searchability.
Compress + Secure at Once
Other tools only shrink the size. IMGLOO can also strip hidden JavaScript and auto-run actions while compressing. Run it before sending via email.
100% In-Browser Processing
Contracts, invoices, medical records β even sensitive PDFs are never sent to a server. All processing happens in your browser, and closing the tab leaves no trace.
When to Compress
Email attachment limit exceeded
Image-heavy PDFs can easily reach dozens of MB. Compressing lets you stay under the typical 10β25 MB attachment limit while keeping all the content intact.
Saving cloud storage space
If you store a lot of PDFs on Google Drive or Dropbox, batch-compressing them can free up significant space. Text search functionality is fully preserved.
Faster website downloads
Large catalog or manual PDFs on your website increase visitor bounce rates. Compress them to cut download times.
Frequently Asked Questions
How does PDF compression work?
Only embedded JPEG images inside the PDF are selectively recompressed. Text, fonts, and vector graphics are preserved as-is, so text remains searchable and readable. PDFs with many images see the best compression results.
Is there quality loss when compressing?
JPEG recompression is applied only to images, so there may be slight quality loss. At quality 80 or above, the difference is virtually unnoticeable. Text and vector graphics retain original quality with zero loss.
What PDF files can be compressed?
Most PDF files can be compressed. PDFs with many JPEG images benefit the most. Text-only PDFs are already small, so additional compression is limited.
Can PDFs contain hidden malicious scripts?
Yes. PDFs can contain JavaScript, auto-actions, and embedded files that execute automatically when opened. IMGLOO's 'Remove Scripts' option strips these threats during compression β all without uploading your file.
Can I compress multiple PDFs at once?
Yes. Upload multiple PDF files and they'll be batch-compressed. You can check each file's original size, compressed size, and savings individually, then download everything at once.
The file got bigger after compression
PDFs with very few images or that are already optimized may grow slightly during the metadata cleanup process. In that case, switch to the 'High Quality' preset for a result closer to the original.