Compress PDF
Pages become JPEG images. Selectable text, links, forms and digital signatures are not preserved.
How this PDF compression works
The compressor renders each page to a JPEG image and builds a new PDF. Original selectable text, OCR layers, links, forms, signatures, accessibility tags and document structure are not retained in the rasterized output. Transparent content is flattened. Review the first-page preview and reopen the download; check every page for small text. Files that become larger are returned unchanged. No arbitrary target size is guaranteed.
On a phone: choose one file, start with higher quality, check the preview, then download and reopen the PDF. Scanned pages may benefit from image reduction; searchable documents can lose valuable structure in this mode.
or drop files here
Maximum file size: 100MB per file
High Quality
Maintain file quality while reducing file size up to 80%.
100% Secure
All processing happens in your browser. Your files never leave your device.
Super Fast
Compress multiple files in seconds with our optimised algorithms.
About PDF Compression Technology
What does this method change?
Pages become JPEG images. Selectable text, links, forms and digital signatures are not preserved.
What are the limits?
Savings vary by file. Some tools return the original if the output is larger; check the resulting format and size.
What should I check before downloading?
Before emailing a PDF, open the downloaded copy and check fine text at the intended viewing size. The tool can reduce image detail; its target size is not guaranteed. If forms, signatures or searchable text matter, keep the original PDF.
- Compare the downloaded file’s quality and actual size.
- Savings vary by file. Some tools return the original if the output is larger; check the resulting format and size.
How to Compress a PDF Online
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1
Upload your PDF files
Select one or more PDF documents from your device using the upload button or drag-and-drop area.
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2
Choose a compression level
Pick the quality setting that best matches your goal, such as balanced compression for email or stronger reduction for web delivery.
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3
Compress and download
Process the PDFs directly in your browser and download the smaller files individually or together as a ZIP archive.
Frequently Asked Questions
What does this method change?
Pages become JPEG images. Selectable text, links, forms and digital signatures are not preserved.
What are the limits?
Savings vary by file. Some tools return the original if the output is larger; check the resulting format and size.
What should I check before downloading?
Compare the downloaded file’s quality and actual size.
Why Choose Let Compress?
- Compare the downloaded file’s quality and actual size.
- Savings vary by file. Some tools return the original if the output is larger; check the resulting format and size.
Compress PDF
This PDF compressor renders pages as JPEG images. Selectable text, links, forms and digital signatures are not preserved.
There is no guaranteed saving or exact target for every file. If the result is larger, some tools return the original; compare its format and size before sharing. Before emailing a PDF, open the downloaded copy and check fine text at the intended viewing size. The tool can reduce image detail; its target size is not guaranteed. If forms, signatures or searchable text matter, keep the original PDF.
References & Resources
Authoritative specifications and references for the file formats this tool works with.
Compress and manage PDF documents. Reduce file size while maintaining quality.