That PDF is too big to email. It happens constantly, and the usual answer is a paid compression service that uploads your contract to a third party. The free Compress PDF tool on Streams8K does it locally instead, and shows you the before and after sizes so you can judge whether it was worth it.
What it actually does
It re-renders every page of the document at the quality you choose and rebuilds the file from those pages. That is why it works so well on scanned documents and image-heavy reports: the embedded images are the bulk of the file size, and re-encoding them at a lower quality removes a large proportion of the weight. The tool reports both sizes directly, so there is no guessing.
How to use it
- Open the Compress PDF tool and load your document.
- Set the Quality value. Lower values produce a smaller file.
- Press “Compress PDF”.
- Compare the before and after file sizes shown by the tool.
- Open the compressed file and check the text is still crisp.
- Download the smaller PDF.
Where it saves the most time
Getting an attachment under an email limit, reducing a proposal before sending it to a client, and shrinking a set of scanned receipts or invoices. If a file simply will not send, this is usually faster and safer than hunting through menus in a PDF reader.
Tips for compressing without visible damage
- Check text at 100% zoom after compressing. Small text is the first thing to degrade.
- For a document that must be printed, stop compressing well before the file feels tiny.
- Text-only PDFs often have little to gain, so do not be surprised if the reduction is modest.
- Keep the original. Once re-rendered, the detail is genuinely gone and cannot be recovered.
It is also a quick pre-step before archiving, where halving the storage used by a folder of scanned paperwork adds up over time.
Related tools that pair well with this
Most people who need one of these end up needing a second tool as well. These sit in the same Docs & PDF group and are all free to use in the browser:
- Images to PDF – Combine JPG/PNG photos into one PDF.
- Merge PDF – Combine several PDF files into one, free.
- PDF to JPG – Turn PDF pages into high-quality images.
If the file is still too large after this, splitting out only the pages you need is often more effective than compressing harder.
Questions people ask
How much smaller will it get?
It depends on what is inside. Image-heavy documents often shrink dramatically, while a text-only PDF that is already optimised may not get much smaller.
Will compressing reduce the quality of my text?
It can. At low quality settings text edges soften. Check the result before you send it, particularly for anything being printed.
Does it upload my PDF?
No. Every page is re-rendered and the file rebuilt in your browser.
Is there a limit on how much I can compress?
You can push quality lower until text becomes visibly bad. Beyond that, compressing further only damages the document without saving meaningful space.