Quick answer
Compress a separate delivery copy, then check its readability and upload size. Large scanned images often offer more reduction than a document made mainly of digital text.
Understand the problem before changing anything
A smaller file is useful only if the required information remains legible. Receipts, stamps, fine drawings and OCR text can react differently to compression. Keep the original for future editing or higher-quality printing.
Step-by-step checks
Read the upload requirement
Note the size limit, accepted format and whether the portal requires one combined file. Avoid unnecessary compression.
Create a delivery copy
Give it a clear name such as document-upload.pdf. Keep the original in a separate folder or with an unmistakable filename.
Optimise moderately
Use a trusted tool’s reduce-size or optimise feature. Start with a moderate setting and inspect the result before reducing quality further.
Review difficult pages
Zoom into small text, signatures, stamps and diagrams. If the original was searchable, test search and copying after compression.
Confirm size and completeness
Check the page count, file properties and uploaded preview. A successful upload alone does not establish readability.
What to avoid
Do not upload sensitive files to unknown compression services or discard the original after making a heavily compressed copy.
How to verify the result
The delivery copy should meet the size limit and remain fit for its purpose. If quality is poor, rescan selected pages or ask whether separate files are accepted.
Keep the source PDF and verify the delivery copy
Keep the original PDF unchanged while testing viewer, print or conversion settings. Check the page count and whether the file contains normal digital text, scanned images, annotations or component attachments. These features affect what different viewers can display, search, print or preserve.
Choose a representative page rather than judging the entire document by its cover. Include a page with small text, a diagram and any comments relevant to the task. Browser PDF viewers and desktop applications have different capabilities, so use the intended reader for the operation rather than assuming every viewer will expose the same controls.
Check the final output separately from the on-screen editing view. For a printout, compare paper size, orientation and scaling with the preview. For a converted or compressed copy, inspect text, images, page order and searchability. Save under a different filename and verify the uploaded or shared preview where possible. Handle confidential documents with approved tools; an online converter receives the file you upload, even when the conversion itself looks routine.
Before you finish
- Original PDF retained
- Page count and content type checked
- Representative page tested in intended reader
- Final print, upload or export verified
Common question
Why is the PDF still large after compression?
It may already be optimised or contain detailed images that cannot shrink much without loss. Remove pages only when they are genuinely unnecessary.
Need help with the next step?
Tell RJ Computers the device model, exact symptom, checks already tried and whether important files are backed up. Confirm availability, assessment charges and the scope of work before arranging a visit.
Reference and version notes
Check the official instructions for your exact product version; menu names and available features can differ.
Adobe: Reduce PDF file size