Compress PDF for Solicitor
Quick answer: drop the PDF into the compressor below, pick a 5MB target (or 2MB for a client-portal upload), check the signatures and dates are still readable, then send it. Most firms' email systems reject attachments above 10MB to 25MB, so a scanned ID pack or signed contract often needs shrinking first. It runs in your browser: the document is not uploaded.
At a glance
- Use this page to compress files quickly with a guided workflow.
- Accepted input: .pdf.
- Output: downloadable files generated in-browser for supported workflows.
- Upload Choose your file
- Process Runs locally
- Download Save result
Drop your files here
or tap to browse · accepts .pdf
Runs in your browser. No file uploads for supported tools.
Best on desktop for 100MB+ files · mobile recommended under ~100MB.
How local processing works
- Your PDF is processed in your browser using local JavaScript libraries.
- PDFWhisk does not upload your file to a processing server for supported tools.
- Only normal page assets load from the site (HTML/CSS/JS), not your document contents.
Selected files
Page preview
Processing
0%Preparing your file
That didn’t work
Ready to download
Support: contact form (reply in ~24h)
Security & privacy detailsHow this tool helps
Reduce the file size of your PDF documents instantly, right in your browser. Our PDF compressor uses smart optimization to shrink files by up to 90% while preserving text clarity, image quality, and formatting. Perfect for email attachments, uploading to portals, or saving storage space. Unlike other tools, your PDF never leaves your device - all compression happens locally using your browser's processing power. Choose from three quality levels: high compression for maximum size reduction, balanced for the best mix of quality and size, or low compression to keep near-original quality. Works with scanned documents, reports, presentations, and any PDF file. Use it when you need to split large PDFs for portal limits, compress PDFs on iPhone, reduce email attachment size.
Best for
How it works
-
1
Open PDFWhisk
Go to PDFWhisk in your browser — no account or app needed.
-
2
Upload your PDF
Click the upload area to select your PDF or drag and drop it onto the page.
-
3
Compress the file
PDFWhisk reduces the file size entirely in your browser. No data is sent to a server.
-
4
Download the compressed PDF
Click Download once compression is complete. The file is ready to attach or upload straight away.
-
5
Check the file size
Confirm the output file meets the size requirement for your platform before uploading.
More files today? Free covers 3 tasks a day and files up to 50MB. For unlimited tasks and bigger files, Pro passes start at £1 for 24 hours. One-off payment, no subscription, and your files still stay on your device.
Intent guide
Documents people send to solicitors are usually scans: signed contracts, ID and proof of address, probate papers and correspondence. Scans are big, which is why they bounce.
Email or the firm's client portal?
If your solicitor has a secure client portal, use it for ID and financial documents; ask what file size it accepts, as some are as low as 2MB to 5MB per file. If you are emailing, keep the total of all attachments under about 10MB to be safe, because the firm's mail filter may be stricter than your own email provider.
Keep signatures and stamps legible
A solicitor needs to read signatures, witness details, dates and any stamps or seals. After compressing, zoom in on those first. If they have blurred, step up to the next target size, or split the document into parts rather than compressing harder.
ID and proof of address
For identity checks, send each document as its own clearly named PDF (for example passport.pdf, utility-bill-june.pdf) unless asked for one file. Phone photos of ID can be turned into a PDF with JPG to PDF, then compressed; photograph them flat, in good light, with all four corners visible.
Do not compress the original
Keep the uncompressed scan. If the firm later needs a clearer copy, or the original for court or the Land Registry, you will need the full-quality version.
Before you upload/share
- Open the PDF and check every page before you send or upload it.
- Keep the original files until the recipient or portal has accepted the document.
Frequently asked questions
How much can I compress a PDF?
Typical compression reduces file size by 40-90%, depending on the content. PDFs with large images see the biggest reductions. Text-only PDFs are already quite small and may only shrink by 10-20%.
Does compression reduce quality?
You control the quality level. 'Balanced' mode provides excellent quality at significantly reduced size. 'Maximum' compression will noticeably reduce image quality but produces the smallest files. Text remains sharp at all levels.
Is there a file size limit?
Since processing happens in your browser, the limit depends on your device's memory. Most devices handle PDFs up to 100MB comfortably. For very large files, try splitting them first.
Are my files uploaded to a server?
No. Your PDF is processed entirely in your browser. The file never leaves your device. We cannot see, access, or store your documents.
Can I compress multiple PDFs at once?
The free version processes one file at a time. Pro users can batch-compress multiple PDFs simultaneously.
What to do next
Chain tools together for a complete workflow.
Popular searches for this tool
Intent-specific pages for common real-world tasks (upload limits, email attachments, iPhone workflows, and privacy-first processing).