Compress PDF
Reduce PDF file size while maintaining quality. Perfect for email attachments.
Need a tinypdf compress solution? Large PDF files can be difficult to share via email, upload to portals, or store efficiently. This lightweight compression tool reduces file size by optimizing internal data structures, downsampling embedded images, and removing redundant metadata — all without noticeably affecting visual quality.
Most users see a 40–70% reduction in file size for image-heavy PDFs. Text-only documents are already compact, so compression results may vary. Choose from three compression levels depending on whether you prioritize quality or file size.
Drop your PDF file here to compress
or click to browse
How It Works
Upload PDF
Select the PDF file you want to compress by dragging it into the drop zone area.
Choose Compression Level
Select either 'Low Compression' (better quality) or 'High Compression' (smaller file size) depending on your needs. Click 'Compress PDF'.
Download
Instantly download your optimized, smaller PDF file. Text remains sharp while images are compressed to save space.
Frequently Asked Questions
How to Compress a PDF to Reduce File Size
Large PDFs are a pain to email, upload, or share. Our compression tool reduces file size by optimizing embedded images while keeping the text layer and layout perfectly intact. The result is a smaller file that looks nearly identical to the original.
- Upload your PDF file.
- Choose a compression level: light (minimal quality loss), medium (balanced), or strong (maximum size reduction).
- Click "Compress" to process the file.
- Download your compressed PDF and compare the file sizes.
PDF compression works by re-encoding the images inside the document at a lower resolution or quality setting. Text, vector graphics, and metadata are untouched. That makes it ideal for PDFs with scanned pages or embedded photographs, where the images account for most of the file size.
Where compression helps most - Getting a scanned document under a strict email attachment limit (often 20–25 MB). - Meeting an upload cap on a job portal, visa application, or university form. - Shrinking a slide deck exported as PDF so it sends quickly over mobile data. - Saving cloud-storage space and speeding up sync for large document libraries.
What to expect from each level Text-heavy files (reports, articles) compress dramatically — often to a fraction of their size with no visible change. Image-heavy files (scans, brochures) shrink most on the "strong" setting, which can slightly soften photos. A 15 MB scanned document can typically drop below 2 MB on the strongest level. If your goal is a specific target such as 100 KB or 500 KB, start strong and step down if quality suffers.
Private by design Cloud compressors upload your document and may retain it for hours. Here the file is compressed inside your browser's memory and discarded the moment you close the tab — so even tax or medical PDFs are never exposed to the internet.
Frequently Asked Questions
How can I reduce PDF file size for email?
Most email clients restrict attachments to 20MB or 25MB. Upload your file here, select "High Compression", and your PDF will instantly be reduced to a fraction of its original size while remaining readable.
Can I compress a PDF to exactly 100KB?
While you cannot specify an exact output size, selecting the highest compression level will aggressively shrink the file. For text-heavy documents, it often results in sizes well under 100KB.
Will compression blur my text?
No. Our engine only targets embedded raster images (like photos or scans). True text and vector shapes remain perfectly crisp and pixel-perfect.
Is it safe to compress tax or medical PDFs online?
Yes, but ONLY if the tool is client-side like TinyPDFTools. Because your highly sensitive documents are never transmitted to our servers, there is zero risk of data interception.
Why did my PDF barely get smaller?
If a PDF is mostly text and vectors, there is little image data to compress, so the reduction is small — the file is already efficient. Big savings come from documents that contain high-resolution photos or scans.